{"id":1928,"date":"2025-11-19T10:53:20","date_gmt":"2025-11-19T02:53:20","guid":{"rendered":"http:\/\/en.tioxhua.com\/?post_type=product&#038;p=1928"},"modified":"2026-02-26T14:45:54","modified_gmt":"2026-02-26T06:45:54","slug":"ceramic-foam-filter","status":"publish","type":"product","link":"https:\/\/www.c-adtech.com\/ja\/product\/ceramic-foam-filter\/","title":{"rendered":"\u30bb\u30e9\u30df\u30c3\u30af\u30fb\u30d5\u30a9\u30fc\u30e0\u30fb\u30d5\u30a3\u30eb\u30bf\u30fc"},"content":{"rendered":"<p><strong>Ceramic foam filters<\/strong> installed and preheated correctly remove sub-micron and micron-scale inclusions, control flow patterns into molds, and measurably lower casting defects and scrap for high-purity and precision aluminum work; when matched to alloy, pore structure and filter thickness, foam filters deliver predictable improvement in surface quality, mechanical uniformity and first-pass yield, making them a cost-effective core component of any modern aluminum casting line.<\/p>\n<h2 data-start=\"1453\" data-end=\"1509\">Why ceramic foam filters matter to aluminum foundries<\/h2>\n<p data-start=\"1511\" data-end=\"2162\">Molten aluminum commonly carries oxide films, entrained dross fragments, sand, and other particles that act as stress concentrators or surface blemishes after solidification. Ceramic foam filters remove these contaminants while simultaneously smoothing flow into the mold so that turbulence and re-entrainment are minimised. For precision components and structural castings, filtration reduces downstream machining scrap, improves fatigue life and raises first-pass yield. Ceramic foam media provide a balance of high porosity and internal surface area that achieves effective capture without excessive head loss.<\/p>\n<figure id=\"attachment_2034\" aria-describedby=\"caption-attachment-2034\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-2034\" src=\"http:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/txaq0-8sztl.webp\" alt=\"Alumina Ceramic Foam Filter\" width=\"800\" height=\"600\" srcset=\"https:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/txaq0-8sztl.webp 800w, https:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/txaq0-8sztl-300x225.webp 300w, https:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/txaq0-8sztl-768x576.webp 768w, https:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/txaq0-8sztl-16x12.webp 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-2034\" class=\"wp-caption-text\">Alumina Ceramic Foam Filter<\/figcaption><\/figure>\n<p style=\"text-align: center;\" data-start=\"2169\" data-end=\"2242\"><a href=\"https:\/\/www.c-adtech.com\/contact-us\/\"><span style=\"color: #0000ff;\"><strong>Consult Our Engineers for Your Casting Process<\/strong><\/span><\/a><\/p>\n<h2 data-start=\"2169\" data-end=\"2242\">Materials and chemistry: alumina, silicon carbide and zirconia options<\/h2>\n<p data-start=\"2244\" data-end=\"2375\">Ceramic foam filters are manufactured from different refractory chemistries to match alloy requirements and operating temperatures.<\/p>\n<ul data-start=\"2377\" data-end=\"3112\">\n<li data-start=\"2377\" data-end=\"2599\">\n<p data-start=\"2379\" data-end=\"2599\"><a href=\"https:\/\/www.c-adtech.com\/alumina-ceramic-filter\/\"><strong data-start=\"2379\" data-end=\"2403\">Alumina (Al2O3) foam<\/strong><\/a> is the most common choice for aluminum casting due to chemical compatibility, cost efficiency and adequate thermal resistance for aluminum process windows.<\/p>\n<\/li>\n<li data-start=\"2600\" data-end=\"2798\">\n<p data-start=\"2602\" data-end=\"2798\"><strong data-start=\"2602\" data-end=\"2638\">Silicon carbide reinforced foams<\/strong> provide improved thermal shock resistance and mechanical strength where higher abrasion or thermal cycling is expected.<\/p>\n<\/li>\n<li data-start=\"2799\" data-end=\"3112\">\n<p data-start=\"2801\" data-end=\"3112\"><a href=\"https:\/\/www.c-adtech.com\/zirconia-ceramic-foam-filters-high-temperature-molten-filtration\/\"><strong data-start=\"2801\" data-end=\"2825\">Zirconia based foams<\/strong><\/a> offer the highest refractoriness and chemical stability and are used in specialty applications or where extreme thermal stability is needed. Their operating temperatures and strength ratings exceed typical aluminum needs but they command a premium.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3114\" data-end=\"3257\">Selecting chemistry depends on the alloy mix, flux practice and whether the work involves repeated heating cycles that stress filter integrity.<\/p>\n<h2 data-start=\"3264\" data-end=\"3321\">Pore size, porosity and how PPI influences performance<\/h2>\n<p data-start=\"3323\" data-end=\"3433\">Pore density expressed as PPI pores per inch is the primary variable process engineers use to tune filtration.<\/p>\n<ul data-start=\"3435\" data-end=\"3852\">\n<li data-start=\"3435\" data-end=\"3558\">\n<p data-start=\"3437\" data-end=\"3558\"><strong data-start=\"3437\" data-end=\"3458\">Low PPI (8 to <a href=\"https:\/\/www.c-adtech.com\/20-ppi-filter-foam\/\">20 PPI<\/a>)<\/strong> provides high permeability, low head loss and is suited for heavy inclusions and high-flow pours.<\/p>\n<\/li>\n<li data-start=\"3559\" data-end=\"3643\">\n<p data-start=\"3561\" data-end=\"3643\"><strong data-start=\"3561\" data-end=\"3583\">Mid PPI (20 to <a href=\"https:\/\/www.c-adtech.com\/30-ppi-ceramic-foam-filter\/\">30 ppi<\/a>)<\/strong> is a common starting point for general aluminum castings.<\/p>\n<\/li>\n<li data-start=\"3644\" data-end=\"3852\">\n<p data-start=\"3646\" data-end=\"3852\"><strong data-start=\"3646\" data-end=\"3669\">High PPI (30 to 60)<\/strong> targets smaller inclusions and finer cosmetic requirements but increases head loss and the risk of earlier clogging if melt cleanliness is poor.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3854\" data-end=\"4274\">Porosity in ceramic foam is typically high, often 80 to 90 percent, which gives a deep bed capture mechanism where particles are trapped through a combination of interception, inertial impaction and adhesion to the porous strut surfaces. Hydraulic characterization and recent studies support the principle that pore structure controls both capture efficiency and flow pressure drop.<\/p>\n<p style=\"text-align: center;\" data-start=\"3854\" data-end=\"4274\"><a href=\"https:\/\/www.c-adtech.com\/contact-us\/\"><span style=\"color: #0000ff;\">Request a Competitive Factory Quote for Alumina Ceramic Foam Filters<\/span><\/a><\/p>\n<h2>Standard sizes for Ceramic Foam Filters:<\/h2>\n<h3>Dimension (\u00b1 3 mm\u2028):<\/h3>\n<p>7x7in \u00a09x9in \u00a012x12in \u00a015x15in \u00a017x17in \u00a020x20in \u00a023x23in \u00a026x26in<\/p>\n<h3>Thickness:<\/h3>\n<p>50 \u00b1 2 mm<\/p>\n<h3>Bevel Angle:<\/h3>\n<p>17.5\u00b1 1.5\u00b0<\/p>\n<h3>Special Dimension:<\/h3>\n<p>square, rectangular, round, trapezoidal, abnormal, or customized as per the requirement.<\/p>\n<h2>Technical Parameters:<\/h2>\n<table class=\"tb\">\n<tbody>\n<tr>\n<td>Item<\/td>\n<td>Density<br \/>\n\uff08g\/cm\u00b3\uff09<\/td>\n<td>Rupture\u00a0Modulus<br \/>\n\uff08816\u2103\u00a0\/Mpa\uff09<\/td>\n<td>Comprehensive\u00a0Strength<br \/>\n\uff08Mpa\uff09<\/td>\n<td>Operating\u00a0Temperature<br \/>\n\uff08\u2103\uff09<\/td>\n<td>Sealing\u00a0gasket\u00a0expanding\u00a0temperature<br \/>\n\uff08\u2103\uff09<\/td>\n<\/tr>\n<tr>\n<td>Index<\/td>\n<td>0.45<\/td>\n<td>5.5<\/td>\n<td>0.8-1.0<\/td>\n<td>1350<\/td>\n<td>450-550<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Pore size for Ceramic Foam Filter:<\/h2>\n<h3>Pores amount in any 25.4mm length filter:<\/h3>\n<table class=\"tb\">\n<tbody>\n<tr>\n<th width=\"124\" height=\"13\"><span lang=\"en-US\">Mesh Number<\/span>\uff08<span lang=\"en-US\">PPI<\/span>\uff09<\/th>\n<td width=\"62\"><span lang=\"en-US\">10<\/span><\/td>\n<td width=\"62\"><span lang=\"en-US\">20<\/span><\/td>\n<td width=\"52\"><span lang=\"en-US\">30<\/span><\/td>\n<td width=\"52\"><span lang=\"en-US\">40<\/span><\/td>\n<td valign=\"TOP\" width=\"52\"><span lang=\"en-US\">50<\/span><\/td>\n<td valign=\"TOP\" width=\"46\"><span lang=\"en-US\">60<\/span><\/td>\n<\/tr>\n<tr>\n<th width=\"124\" height=\"13\"><span lang=\"en-US\">Pore Density(PCS)<\/span><\/th>\n<td width=\"62\"><span lang=\"en-US\">8-12<\/span><\/td>\n<td width=\"62\"><span lang=\"en-US\">18-22<\/span><\/td>\n<td width=\"52\"><span lang=\"en-US\">28-32<\/span><\/td>\n<td width=\"52\"><span lang=\"en-US\">38-42<\/span><\/td>\n<td valign=\"TOP\" width=\"52\"><span lang=\"en-US\">48-52<\/span><\/td>\n<td valign=\"TOP\" width=\"46\"><span lang=\"en-US\">58-62<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>The distribution curve of pore size:<\/h3>\n<figure id=\"attachment_5433\" aria-describedby=\"caption-attachment-5433\" style=\"width: 695px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-5433 size-full\" src=\"http:\/\/www.adtechamm.com\/wp-content\/uploads\/2017\/09\/adtech-filter-1.jpg\" alt=\"Alumina ceramic foam filter pore size distribution curve 10-60 PPI\" width=\"695\" height=\"423\" \/><figcaption id=\"caption-attachment-5433\" class=\"wp-caption-text\">Alumina ceramic foam filter pore size distribution curve 10-60 PPI<\/figcaption><\/figure>\n<h2>Filtration Precision for Ceramic Foam<\/h2>\n<table class=\"tb\">\n<tbody>\n<tr>\n<th width=\"149\" height=\"13\"><span lang=\"en-US\">Pore Size<\/span>\uff08<span lang=\"en-US\">PPI<\/span>\uff09<\/th>\n<td width=\"75\"><span lang=\"en-US\">20<\/span><\/td>\n<td width=\"64\"><span lang=\"en-US\">30<\/span><\/td>\n<td width=\"64\"><span lang=\"en-US\">40<\/span><\/td>\n<td valign=\"TOP\" width=\"64\"><span lang=\"en-US\">50<\/span><\/td>\n<td valign=\"TOP\" width=\"56\"><span lang=\"en-US\">60<\/span><\/td>\n<\/tr>\n<tr>\n<th width=\"149\" height=\"12\"><span lang=\"en-US\">Inclusions Diameter<\/span>\uff08<span lang=\"en-US\">um<\/span>\uff09<\/th>\n<td width=\"75\"><span lang=\"en-US\">80<\/span><\/td>\n<td width=\"64\"><span lang=\"en-US\">40<\/span><\/td>\n<td width=\"64\"><span lang=\"en-US\">20<\/span><\/td>\n<td valign=\"TOP\" width=\"64\"><span lang=\"en-US\">10<\/span><\/td>\n<td valign=\"TOP\" width=\"56\"><span lang=\"en-US\">5<\/span><\/td>\n<\/tr>\n<tr>\n<th width=\"149\" height=\"12\"><span lang=\"en-US\">Filtration Rate<\/span>\uff08\uff05\uff09<\/th>\n<td width=\"75\"><span lang=\"en-US\">78<\/span><\/td>\n<td width=\"64\"><span lang=\"en-US\">85<\/span><\/td>\n<td width=\"64\"><span lang=\"en-US\">88<\/span><\/td>\n<td valign=\"TOP\" width=\"64\"><span lang=\"en-US\">92<\/span><\/td>\n<td valign=\"TOP\" width=\"56\"><span lang=\"en-US\">95<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Application Data for Ceramic Foam Filters<\/h2>\n<table class=\"tb\">\n<tbody>\n<tr>\n<th width=\"219\" height=\"13\"><span lang=\"en-US\">Specifications (mm)<\/span><\/th>\n<th width=\"128\"><span lang=\"en-US\">Effective filtration area(<\/span>\uff05<span lang=\"en-US\">)<\/span><\/th>\n<th width=\"155\"><span lang=\"en-US\">Filtration flow range<\/span>\uff08<span lang=\"en-US\">kg\/min<\/span>\uff09<\/th>\n<\/tr>\n<tr>\n<td width=\"219\" height=\"14\"><span lang=\"en-US\">7in(178*178*50)<\/span><\/td>\n<td width=\"128\"><span lang=\"en-US\">75<\/span><\/td>\n<td width=\"155\"><span lang=\"en-US\">22-56<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"219\" height=\"14\"><span lang=\"en-US\">9in(229*229*50)<\/span><\/td>\n<td width=\"128\"><span lang=\"en-US\">75<\/span><\/td>\n<td width=\"155\"><span lang=\"en-US\">25-80<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"219\" height=\"14\"><span lang=\"en-US\">12in(305*305*50)<\/span><\/td>\n<td width=\"128\"><span lang=\"en-US\">80<\/span><\/td>\n<td width=\"155\"><span lang=\"en-US\">50-156<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"219\" height=\"14\"><span lang=\"en-US\">15in(381*381*50)<\/span><\/td>\n<td width=\"128\"><span lang=\"en-US\">85<\/span><\/td>\n<td width=\"155\"><span lang=\"en-US\">85-252<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"219\" height=\"14\"><span lang=\"en-US\">17in(432*432*50)<\/span><\/td>\n<td width=\"128\"><span lang=\"en-US\">86<\/span><\/td>\n<td width=\"155\"><span lang=\"en-US\">110-335<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"219\" height=\"14\"><span lang=\"en-US\">20in(508*508*50)<\/span><\/td>\n<td width=\"128\"><span lang=\"en-US\">88<\/span><\/td>\n<td width=\"155\"><span lang=\"en-US\">160-478<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"219\" height=\"14\"><span lang=\"en-US\">23in(584*584*50)<\/span><\/td>\n<td width=\"128\"><span lang=\"en-US\">89<\/span><\/td>\n<td width=\"155\"><span lang=\"en-US\">210-640<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"219\" height=\"13\"><span lang=\"en-US\">26in(660*660*50)<\/span><\/td>\n<td width=\"128\"><span lang=\"en-US\">90<\/span><\/td>\n<td width=\"155\"><span lang=\"en-US\">276-830<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Packing Specification for Ceramic Foam Filter Standard pallet, quantified packaging, and approximate weight<\/h2>\n<table class=\"tb\">\n<tbody>\n<tr>\n<td colspan=\"6\">Standard Pallet, Quantitative Packaging and Weight<\/td>\n<\/tr>\n<tr>\n<th width=\"134\">Filter Dimention<br \/>\n(mm)<\/th>\n<th width=\"170\">Filter QTY per Case<br \/>\n(Pcs)<\/th>\n<th width=\"177\">Case QTY per Pallet<br \/>\n(Case)<\/th>\n<th width=\"132\">QTY per Pallet<br \/>\n(Pcs)<\/th>\n<th width=\"142\">Pallet Dimension<br \/>\n(mm)<\/th>\n<th width=\"184\">Pallet General Weight<br \/>\n(Kg)<\/th>\n<\/tr>\n<tr>\n<td width=\"134\">660x660x50(26\u2033)<\/td>\n<td width=\"170\">4<\/td>\n<td width=\"177\">8<\/td>\n<td width=\"132\">48<\/td>\n<td width=\"142\">1100*1100*2200<\/td>\n<td width=\"184\">490<\/td>\n<\/tr>\n<tr>\n<td width=\"134\">584x584x50(23\u2033)<\/td>\n<td width=\"170\">5<\/td>\n<td width=\"177\">12<\/td>\n<td width=\"132\">60<\/td>\n<td width=\"142\">950*950*2050<\/td>\n<td width=\"184\">510<\/td>\n<\/tr>\n<tr>\n<td width=\"134\">508x508x50(20\u2033)<\/td>\n<td width=\"170\">5<\/td>\n<td width=\"177\">18<\/td>\n<td width=\"132\">90<\/td>\n<td width=\"142\">1100*900*1720<\/td>\n<td width=\"184\">470<\/td>\n<\/tr>\n<tr>\n<td width=\"134\">432x432x50(17\u2033)<\/td>\n<td width=\"170\">5<\/td>\n<td width=\"177\">24<\/td>\n<td width=\"132\">120<\/td>\n<td width=\"142\">1100*1100*1670<\/td>\n<td width=\"184\">450<\/td>\n<\/tr>\n<tr>\n<td width=\"134\">381x381x50(15\u2033)<\/td>\n<td width=\"170\">5<\/td>\n<td width=\"177\">24<\/td>\n<td width=\"132\">120<\/td>\n<td width=\"142\">1100*1100*1540<\/td>\n<td width=\"184\">430<\/td>\n<\/tr>\n<tr>\n<td width=\"134\">305x305x50(12\u2033)<\/td>\n<td width=\"170\">10<\/td>\n<td width=\"177\">16<\/td>\n<td width=\"132\">160<\/td>\n<td width=\"142\">1000*1000*1550<\/td>\n<td width=\"184\">350<\/td>\n<\/tr>\n<tr>\n<td width=\"134\">228x228x50(9\u2033)<\/td>\n<td width=\"170\">10<\/td>\n<td width=\"177\">20<\/td>\n<td width=\"132\">200<\/td>\n<td width=\"142\">1100*1100*1400<\/td>\n<td width=\"184\">310<\/td>\n<\/tr>\n<tr>\n<td width=\"134\">178x178x50(7\u2033)<\/td>\n<td width=\"170\">10<\/td>\n<td width=\"177\">20<\/td>\n<td width=\"132\">200<\/td>\n<td width=\"142\">1100*1100*1400<\/td>\n<td width=\"184\">220<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\" data-start=\"4281\" data-end=\"4356\"><a href=\"https:\/\/www.c-adtech.com\/contact-us\/\"><span style=\"color: #0000ff;\">Check Stock Availability and <span id=\"Packing_Specification_for_Ceramic_Foam_Filter_Standard_pallet_quantified_packaging_and_approximate_weight\">Ceramic Foam Filter\u00a0 <\/span>Price<\/span><\/a><\/p>\n<h2 data-start=\"4281\" data-end=\"4356\">How filtration works in practice: deep bed capture and flow conditioning<\/h2>\n<p data-start=\"4358\" data-end=\"4967\">Ceramic foam filters operate as deep bed filters rather than simple sieves. Incoming molten metal passes through the three-dimensional network of interconnected pores. Fine particles and oxides adhere to strut surfaces, agglomerate and are retained within the depth of the filter. The porous network also converts turbulent flow into a more laminar profile, significantly reducing splashing and vortex formation at the mold inlet. Because of this, properly sized foam filters lower entrained gas and decrease pinholes and other porosity types linked to flow disturbances.<\/p>\n<figure id=\"attachment_2201\" aria-describedby=\"caption-attachment-2201\" style=\"width: 492px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-2201\" src=\"http:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/tb5le-ol61c.webp\" alt=\"Ceramic Filters for Foundry Filtration Process\" width=\"492\" height=\"393\" srcset=\"https:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/tb5le-ol61c.webp 492w, https:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/tb5le-ol61c-300x240.webp 300w, https:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/tb5le-ol61c-15x12.webp 15w\" sizes=\"(max-width: 492px) 100vw, 492px\" \/><figcaption id=\"caption-attachment-2201\" class=\"wp-caption-text\">Ceramic Filters for Foundry Filtration Process<\/figcaption><\/figure>\n<h2 data-start=\"4974\" data-end=\"5023\">Matching filter geometry to casting parameters<\/h2>\n<p data-start=\"5025\" data-end=\"5140\">Choosing filter thickness, PPI and mounting orientation must consider pour mass, gating geometry and riser heights.<\/p>\n<h3 data-start=\"5142\" data-end=\"5182\">Table 1 Typical matching guidelines<\/h3>\n<div class=\"_tableContainer_1rjym_1\">\n<div class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"5184\" data-end=\"5766\">\n<thead data-start=\"5184\" data-end=\"5252\">\n<tr data-start=\"5184\" data-end=\"5252\">\n<th data-start=\"5184\" data-end=\"5204\" data-col-size=\"sm\">Casting parameter<\/th>\n<th data-start=\"5204\" data-end=\"5239\" data-col-size=\"sm\">Suggested starting filter choice<\/th>\n<th data-start=\"5239\" data-end=\"5252\" data-col-size=\"md\">Rationale<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"5268\" data-end=\"5766\">\n<tr data-start=\"5268\" data-end=\"5394\">\n<td data-start=\"5268\" data-end=\"5300\" data-col-size=\"sm\">Large ingots, high mass pours<\/td>\n<td data-col-size=\"sm\" data-start=\"5300\" data-end=\"5340\">10 to 20 PPI, thicker filter 50\u201375 mm<\/td>\n<td data-col-size=\"md\" data-start=\"5340\" data-end=\"5394\">High permeability reduces head loss in heavy flows<\/td>\n<\/tr>\n<tr data-start=\"5395\" data-end=\"5509\">\n<td data-start=\"5395\" data-end=\"5422\" data-col-size=\"sm\">General automotive parts<\/td>\n<td data-col-size=\"sm\" data-start=\"5422\" data-end=\"5457\">20 to 30 PPI, 25\u201350 mm thickness<\/td>\n<td data-col-size=\"md\" data-start=\"5457\" data-end=\"5509\">Balance of capture and flow for mixed inclusions<\/td>\n<\/tr>\n<tr data-start=\"5510\" data-end=\"5646\">\n<td data-start=\"5510\" data-end=\"5548\" data-col-size=\"sm\">Precision housing, visible surfaces<\/td>\n<td data-col-size=\"sm\" data-start=\"5548\" data-end=\"5583\">30 to 60 PPI, 25\u201350 mm thickness<\/td>\n<td data-col-size=\"md\" data-start=\"5583\" data-end=\"5646\">Higher capture of small inclusions, smoother surface finish<\/td>\n<\/tr>\n<tr data-start=\"5647\" data-end=\"5766\">\n<td data-start=\"5647\" data-end=\"5676\" data-col-size=\"sm\">Thin wall, low pour height<\/td>\n<td data-col-size=\"sm\" data-start=\"5676\" data-end=\"5715\">Lower PPI with careful gating design<\/td>\n<td data-col-size=\"md\" data-start=\"5715\" data-end=\"5766\">Maintain flow rate while avoiding filter damage<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"5768\" data-end=\"5918\">These settings are starting points. Validate with Reduced Pressure Test and inclusion counts on sectioned parts.<\/p>\n<h2 data-start=\"5925\" data-end=\"5977\">Installation best practices and preheat procedure<\/h2>\n<p data-start=\"5979\" data-end=\"6063\">Proper installation and preheating are decisive for filter lifetime and performance.<\/p>\n<ul data-start=\"6065\" data-end=\"7168\">\n<li data-start=\"6065\" data-end=\"6414\">\n<p data-start=\"6067\" data-end=\"6414\"><strong data-start=\"6067\" data-end=\"6089\">Preheat the filter<\/strong> to molten metal temperature or to a controlled preheat temperature to remove residual moisture and minimise thermal shock. Typical preheat periods vary but 15 to 30 minutes are common for many shop practices. Preheating prevents steam explosions and helps the filter seat correctly.<\/p>\n<\/li>\n<li data-start=\"6415\" data-end=\"6644\">\n<p data-start=\"6417\" data-end=\"6644\"><strong data-start=\"6417\" data-end=\"6440\">Orientation matters<\/strong>. Follow the arrow marks on filters when present. Ensure filter faces are aligned with the intended flow direction and that seals prevent bypass around the edges.<\/p>\n<\/li>\n<li data-start=\"6645\" data-end=\"6877\">\n<p data-start=\"6647\" data-end=\"6877\"><strong data-start=\"6647\" data-end=\"6669\">Gasket and sealing<\/strong>. Use high temperature gaskets or refractory seals that compress to prevent metal bypass. Inspect seals regularly and replace when deformation or erosion is observed.<\/p>\n<\/li>\n<li data-start=\"6878\" data-end=\"7168\">\n<p data-start=\"6880\" data-end=\"7168\"><strong data-start=\"6880\" data-end=\"6919\">Protect from direct jet impingement<\/strong>. If pouring from a ladle or funnel with a concentrated jet pattern, use flow spreaders or staggered placement so the melt does not strike the filter face directly at high velocity which can fracture the foam.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"7170\" data-end=\"7287\">Follow shop safety protocols when preheating and avoid rapid temperature changes that could crack the ceramic matrix.<\/p>\n<figure id=\"attachment_2200\" aria-describedby=\"caption-attachment-2200\" style=\"width: 490px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2200\" src=\"http:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/tq1iu-6jyd1.webp\" alt=\"Workers are placing ceramic foam filter plates\" width=\"490\" height=\"391\" srcset=\"https:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/tq1iu-6jyd1.webp 490w, https:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/tq1iu-6jyd1-300x239.webp 300w, https:\/\/www.c-adtech.com\/wp-content\/uploads\/2025\/11\/tq1iu-6jyd1-15x12.webp 15w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><figcaption id=\"caption-attachment-2200\" class=\"wp-caption-text\">Workers are placing ceramic foam filter plates<\/figcaption><\/figure>\n<h2 data-start=\"7294\" data-end=\"7345\">Filter life, clogging and replacement indicators<\/h2>\n<p data-start=\"7347\" data-end=\"7463\">Filter life depends on inclusion load, PPI, thickness and pour profile. Common indicators to change filters include:<\/p>\n<ul data-start=\"7465\" data-end=\"7784\">\n<li data-start=\"7465\" data-end=\"7544\">\n<p data-start=\"7467\" data-end=\"7544\"><strong data-start=\"7467\" data-end=\"7487\">Rising head loss<\/strong> measured as reduced pour rate at the same pour height.<\/p>\n<\/li>\n<li data-start=\"7545\" data-end=\"7624\">\n<p data-start=\"7547\" data-end=\"7624\"><strong data-start=\"7547\" data-end=\"7589\">Reduced pouring time or irregular flow<\/strong> during normal production cycles.<\/p>\n<\/li>\n<li data-start=\"7625\" data-end=\"7703\">\n<p data-start=\"7627\" data-end=\"7703\"><strong data-start=\"7627\" data-end=\"7666\">Visible blowouts or filter cracking<\/strong> noted during post-pour inspection.<\/p>\n<\/li>\n<li data-start=\"7704\" data-end=\"7784\">\n<p data-start=\"7706\" data-end=\"7784\"><strong data-start=\"7706\" data-end=\"7732\">Inclusion breakthrough<\/strong> seen in sectioned castings despite filter presence.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"7786\" data-end=\"7917\">Keeping records of filter life versus production variables helps establish optimal change intervals and stocking levels for spares.<\/p>\n<p style=\"text-align: center;\" data-start=\"7786\" data-end=\"7917\"><a href=\"https:\/\/www.c-adtech.com\/contact-us\/\"><span style=\"color: #0000ff;\">Request a Tailored Filtration Solution<\/span><\/a><\/p>\n<h2 data-start=\"7924\" data-end=\"7980\">Integration with ADtech plate boxes and ladle systems<\/h2>\n<p data-start=\"7982\" data-end=\"8350\">Ceramic foam filters pair with ADtech plate-type or box filters to create a controlled filtration system. The box ensures proper seating and seal, while the foam media provides the particle capture and flow conditioning. For automated or continuous lines, the filter assembly can include hydraulic or motorized clamping and a fast-change cassette for minimal downtime.<\/p>\n<p data-start=\"8352\" data-end=\"8501\">Design the box so the filter sits immediately upstream of the pour nozzle to avoid recontamination and maintain laminar filling into the mold cavity.<\/p>\n<p><iframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Rw4NSeIvJgg?si=eScm8lqxJXX5FQbB\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2 data-start=\"8508\" data-end=\"8562\">Performance verification and measurement techniques<\/h2>\n<p data-start=\"8564\" data-end=\"8615\">Validate filter performance using a combination of:<\/p>\n<ul data-start=\"8617\" data-end=\"9178\">\n<li data-start=\"8617\" data-end=\"8802\">\n<p data-start=\"8619\" data-end=\"8802\"><strong data-start=\"8619\" data-end=\"8650\">Reduced Pressure Test (RPT)<\/strong> to compare porosity before and after filtration. Collect baseline and post-installation data for SPC control.<\/p>\n<\/li>\n<li data-start=\"8803\" data-end=\"8926\">\n<p data-start=\"8805\" data-end=\"8926\"><strong data-start=\"8805\" data-end=\"8827\">Inclusion analysis<\/strong> on sectioned parts or metallographic samples to quantify inclusion counts and size distribution.<\/p>\n<\/li>\n<li data-start=\"8927\" data-end=\"9178\">\n<p data-start=\"8929\" data-end=\"9178\"><strong data-start=\"8929\" data-end=\"8953\">Hydraulic monitoring<\/strong> by logging pour rates and head loss across filter batches to detect clogging trends. Recent hydraulic studies provide models to predict pressure drop for given PPI and flow conditions.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"9180\" data-end=\"9307\">Use these methods together to demonstrate the ROI of filtration investments and to tune PPI and thickness for peak performance.<\/p>\n<h2 data-start=\"9314\" data-end=\"9360\">Safety, environmental and handling guidance<\/h2>\n<ul data-start=\"9362\" data-end=\"10058\">\n<li data-start=\"9362\" data-end=\"9586\">\n<p data-start=\"9364\" data-end=\"9586\"><strong data-start=\"9364\" data-end=\"9376\">Handling<\/strong>. Store ceramic filters in dry, controlled environments to prevent moisture pickup. Preheat in controlled ovens or with specified heater systems to avoid steam hazards.<\/p>\n<\/li>\n<li data-start=\"9587\" data-end=\"9860\">\n<p data-start=\"9589\" data-end=\"9860\"><strong data-start=\"9589\" data-end=\"9614\">Spent media and dross<\/strong>. Collect and manage spent filters and trapped dross as per local waste and recycling regulations. Many spent filters contain recoverable aluminum and can enter metal recovery streams after safe handling.<\/p>\n<\/li>\n<li data-start=\"9861\" data-end=\"10058\">\n<p data-start=\"9863\" data-end=\"10058\"><strong data-start=\"9863\" data-end=\"9879\">Operator PPE<\/strong>. Use heat resistant gloves, face shields, aprons and follow molten metal handling procedures. Ensure fume extraction for any fluxing or skimming activity near the filter station.<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"10065\" data-end=\"10114\">Comparison with alternate filtration solutions<\/h2>\n<h3 data-start=\"10116\" data-end=\"10148\">Table 2 Comparative summary<\/h3>\n<div class=\"_tableContainer_1rjym_1\">\n<div class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"10150\" data-end=\"10682\">\n<thead data-start=\"10150\" data-end=\"10216\">\n<tr data-start=\"10150\" data-end=\"10216\">\n<th data-start=\"10150\" data-end=\"10159\" data-col-size=\"sm\">Metric<\/th>\n<th data-start=\"10159\" data-end=\"10181\" data-col-size=\"sm\">Ceramic foam filter<\/th>\n<th data-start=\"10181\" data-end=\"10197\" data-col-size=\"sm\">Fiber filters<\/th>\n<th data-start=\"10197\" data-end=\"10216\" data-col-size=\"sm\">Tubular filters<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"10238\" data-end=\"10682\">\n<tr data-start=\"10238\" data-end=\"10302\">\n<td data-start=\"10238\" data-end=\"10272\" data-col-size=\"sm\">Capture of sub-micron particles<\/td>\n<td data-col-size=\"sm\" data-start=\"10272\" data-end=\"10279\">High<\/td>\n<td data-col-size=\"sm\" data-start=\"10279\" data-end=\"10290\">Moderate<\/td>\n<td data-col-size=\"sm\" data-start=\"10290\" data-end=\"10302\">Moderate<\/td>\n<\/tr>\n<tr data-start=\"10303\" data-end=\"10371\">\n<td data-start=\"10303\" data-end=\"10340\" data-col-size=\"sm\">Flow conditioning (laminarisation)<\/td>\n<td data-col-size=\"sm\" data-start=\"10340\" data-end=\"10352\">Excellent<\/td>\n<td data-col-size=\"sm\" data-start=\"10352\" data-end=\"10359\">Good<\/td>\n<td data-col-size=\"sm\" data-start=\"10359\" data-end=\"10371\">Variable<\/td>\n<\/tr>\n<tr data-start=\"10372\" data-end=\"10458\">\n<td data-start=\"10372\" data-end=\"10398\" data-col-size=\"sm\">Thermal shock tolerance<\/td>\n<td data-col-size=\"sm\" data-start=\"10398\" data-end=\"10440\">Good to excellent (chemistry dependent)<\/td>\n<td data-col-size=\"sm\" data-start=\"10440\" data-end=\"10448\">Lower<\/td>\n<td data-col-size=\"sm\" data-start=\"10448\" data-end=\"10458\">Varies<\/td>\n<\/tr>\n<tr data-start=\"10459\" data-end=\"10532\">\n<td data-start=\"10459\" data-end=\"10477\" data-col-size=\"sm\">Cost per filter<\/td>\n<td data-col-size=\"sm\" data-start=\"10477\" data-end=\"10488\">Moderate<\/td>\n<td data-col-size=\"sm\" data-start=\"10488\" data-end=\"10494\">Low<\/td>\n<td data-col-size=\"sm\" data-start=\"10494\" data-end=\"10532\">Can be higher for special ceramics<\/td>\n<\/tr>\n<tr data-start=\"10533\" data-end=\"10582\">\n<td data-start=\"10533\" data-end=\"10556\" data-col-size=\"sm\">Ease of installation<\/td>\n<td data-col-size=\"sm\" data-start=\"10556\" data-end=\"10565\">Medium<\/td>\n<td data-col-size=\"sm\" data-start=\"10565\" data-end=\"10572\">Easy<\/td>\n<td data-col-size=\"sm\" data-start=\"10572\" data-end=\"10582\">Medium<\/td>\n<\/tr>\n<tr data-start=\"10583\" data-end=\"10682\">\n<td data-start=\"10583\" data-end=\"10597\" data-col-size=\"sm\">Reusability<\/td>\n<td data-col-size=\"sm\" data-start=\"10597\" data-end=\"10614\">No, consumable<\/td>\n<td data-col-size=\"sm\" data-start=\"10614\" data-end=\"10640\">Some designs disposable<\/td>\n<td data-col-size=\"sm\" data-start=\"10640\" data-end=\"10682\">Some designs consumable or replaceable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"10684\" data-end=\"10877\">Ceramic foam filters are often the preferred option for high-precision castings because of their combined capture depth and flow conditioning properties.<\/p>\n<h2 data-start=\"10884\" data-end=\"10915\">Economic case and sample ROI<\/h2>\n<p data-start=\"10917\" data-end=\"11065\">Filtration reduces scrap and downstream rework. Typical savings arise from fewer surface repairs, lower machining scrap and higher acceptance rates.<\/p>\n<h3 data-start=\"11067\" data-end=\"11108\">Table 3 Illustrative ROI calculation<\/h3>\n<div class=\"_tableContainer_1rjym_1\">\n<div class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"11110\" data-end=\"11776\">\n<thead data-start=\"11110\" data-end=\"11147\">\n<tr data-start=\"11110\" data-end=\"11147\">\n<th data-start=\"11110\" data-end=\"11122\" data-col-size=\"md\">Parameter<\/th>\n<th data-start=\"11122\" data-end=\"11138\" data-col-size=\"sm\">Example input<\/th>\n<th data-start=\"11138\" data-end=\"11147\" data-col-size=\"md\">Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"11163\" data-end=\"11776\">\n<tr data-start=\"11163\" data-end=\"11201\">\n<td data-start=\"11163\" data-end=\"11188\" data-col-size=\"md\">Annual melt throughput<\/td>\n<td data-col-size=\"sm\" data-start=\"11188\" data-end=\"11198\">2,500 t<\/td>\n<td data-col-size=\"md\" data-start=\"11198\" data-end=\"11201\"><\/td>\n<\/tr>\n<tr data-start=\"11202\" data-end=\"11275\">\n<td data-start=\"11202\" data-end=\"11226\" data-col-size=\"md\">Pre-filter scrap rate<\/td>\n<td data-col-size=\"sm\" data-start=\"11226\" data-end=\"11233\">1.8%<\/td>\n<td data-col-size=\"md\" data-start=\"11233\" data-end=\"11275\">Due to surface inclusions and porosity<\/td>\n<\/tr>\n<tr data-start=\"11276\" data-end=\"11343\">\n<td data-start=\"11276\" data-end=\"11301\" data-col-size=\"md\">Post-filter scrap rate<\/td>\n<td data-col-size=\"sm\" data-start=\"11301\" data-end=\"11308\">0.7%<\/td>\n<td data-col-size=\"md\" data-start=\"11308\" data-end=\"11343\">After filter and process tuning<\/td>\n<\/tr>\n<tr data-start=\"11344\" data-end=\"11396\">\n<td data-start=\"11344\" data-end=\"11367\" data-col-size=\"md\">Metal saved annually<\/td>\n<td data-start=\"11367\" data-end=\"11376\" data-col-size=\"sm\">27.5 t<\/td>\n<td data-col-size=\"md\" data-start=\"11376\" data-end=\"11396\">(1.1% of 2500 t)<\/td>\n<\/tr>\n<tr data-start=\"11397\" data-end=\"11453\">\n<td data-start=\"11397\" data-end=\"11424\" data-col-size=\"md\">Value per tonne aluminum<\/td>\n<td data-start=\"11424\" data-end=\"11433\" data-col-size=\"sm\">$1,800<\/td>\n<td data-col-size=\"md\" data-start=\"11433\" data-end=\"11453\">Market dependent<\/td>\n<\/tr>\n<tr data-start=\"11454\" data-end=\"11531\">\n<td data-start=\"11454\" data-end=\"11481\" data-col-size=\"md\">Annual metal value saved<\/td>\n<td data-start=\"11481\" data-end=\"11491\" data-col-size=\"sm\">$49,500<\/td>\n<td data-col-size=\"md\" data-start=\"11491\" data-end=\"11531\">Excludes machining and labor savings<\/td>\n<\/tr>\n<tr data-start=\"11532\" data-end=\"11618\">\n<td data-start=\"11532\" data-end=\"11578\" data-col-size=\"md\">Estimated annual consumable and filter cost<\/td>\n<td data-col-size=\"sm\" data-start=\"11578\" data-end=\"11588\">$12,000<\/td>\n<td data-col-size=\"md\" data-start=\"11588\" data-end=\"11618\">Filters, gaskets, handling<\/td>\n<\/tr>\n<tr data-start=\"11619\" data-end=\"11700\">\n<td data-start=\"11619\" data-end=\"11640\" data-col-size=\"md\">Net annual benefit<\/td>\n<td data-start=\"11640\" data-end=\"11650\" data-col-size=\"sm\">$37,500<\/td>\n<td data-col-size=\"md\" data-start=\"11650\" data-end=\"11700\">Rough example; site data required for accuracy<\/td>\n<\/tr>\n<tr data-start=\"11701\" data-end=\"11776\">\n<td data-start=\"11701\" data-end=\"11711\" data-col-size=\"md\">Payback<\/td>\n<td data-start=\"11711\" data-end=\"11720\" data-col-size=\"sm\">Months<\/td>\n<td data-start=\"11720\" data-end=\"11776\" data-col-size=\"md\">Typically under 12 to 24 months for medium foundries<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"11778\" data-end=\"11893\">Site trials and accurate cost inputs for scrap, rework and machining are essential for a reliable payback estimate.<\/p>\n<h2 data-start=\"11900\" data-end=\"11955\">Troubleshooting common issues and corrective actions<\/h2>\n<h3 data-start=\"11957\" data-end=\"11992\">Table 4 Troubleshooting matrix<\/h3>\n<div class=\"_tableContainer_1rjym_1\">\n<div class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"11994\" data-end=\"12654\">\n<thead data-start=\"11994\" data-end=\"12040\">\n<tr data-start=\"11994\" data-end=\"12040\">\n<th data-start=\"11994\" data-end=\"12004\" data-col-size=\"sm\">Symptom<\/th>\n<th data-start=\"12004\" data-end=\"12019\" data-col-size=\"md\">Likely cause<\/th>\n<th data-start=\"12019\" data-end=\"12040\" data-col-size=\"md\">Corrective action<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"12055\" data-end=\"12654\">\n<tr data-start=\"12055\" data-end=\"12175\">\n<td data-start=\"12055\" data-end=\"12085\" data-col-size=\"sm\">Filter cracking during pour<\/td>\n<td data-col-size=\"md\" data-start=\"12085\" data-end=\"12125\">Filter not preheated or thermal shock<\/td>\n<td data-col-size=\"md\" data-start=\"12125\" data-end=\"12175\">Increase preheat time, check heater uniformity<\/td>\n<\/tr>\n<tr data-start=\"12176\" data-end=\"12278\">\n<td data-start=\"12176\" data-end=\"12193\" data-col-size=\"sm\">Rapid clogging<\/td>\n<td data-col-size=\"md\" data-start=\"12193\" data-end=\"12228\">High inclusion load or wrong PPI<\/td>\n<td data-col-size=\"md\" data-start=\"12228\" data-end=\"12278\">Use coarser PPI or upstream skimming\/degassing<\/td>\n<\/tr>\n<tr data-start=\"12279\" data-end=\"12385\">\n<td data-start=\"12279\" data-end=\"12301\" data-col-size=\"sm\">Bypass around edges<\/td>\n<td data-start=\"12301\" data-end=\"12331\" data-col-size=\"md\">Poor seal or gasket failure<\/td>\n<td data-col-size=\"md\" data-start=\"12331\" data-end=\"12385\">Replace gasket, confirm seating and clamp pressure<\/td>\n<\/tr>\n<tr data-start=\"12386\" data-end=\"12527\">\n<td data-start=\"12386\" data-end=\"12425\" data-col-size=\"sm\">Reduced surface quality post-install<\/td>\n<td data-col-size=\"md\" data-start=\"12425\" data-end=\"12463\">Incorrect PPI or filter orientation<\/td>\n<td data-col-size=\"md\" data-start=\"12463\" data-end=\"12527\">Check arrow direction, run inclusion analysis and adjust PPI<\/td>\n<\/tr>\n<tr data-start=\"12528\" data-end=\"12654\">\n<td data-start=\"12528\" data-end=\"12548\" data-col-size=\"sm\">Short filter life<\/td>\n<td data-start=\"12548\" data-end=\"12594\" data-col-size=\"md\">Excessive flux residues or aggressive alloy<\/td>\n<td data-col-size=\"md\" data-start=\"12594\" data-end=\"12654\">Evaluate chemistry, consider more erosion resistant foam<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"12656\" data-end=\"12754\">Document each event and corrective action to build a troubleshooting knowledge base for operators.<\/p>\n<h2 data-start=\"12761\" data-end=\"12803\">Standards, tests and validation methods<\/h2>\n<p data-start=\"12805\" data-end=\"12879\">Foundries should adopt routine measurements to control filtration results:<\/p>\n<ul data-start=\"12881\" data-end=\"13256\">\n<li data-start=\"12881\" data-end=\"12980\">\n<p data-start=\"12883\" data-end=\"12980\"><strong data-start=\"12883\" data-end=\"12916\">Baseline RPT and periodic RPT<\/strong> after filter changes.<\/p>\n<\/li>\n<li data-start=\"12981\" data-end=\"13051\">\n<p data-start=\"12983\" data-end=\"13051\"><strong data-start=\"12983\" data-end=\"13029\">Inclusion microscopy and size distribution<\/strong> for critical parts.<\/p>\n<\/li>\n<li data-start=\"13052\" data-end=\"13159\">\n<p data-start=\"13054\" data-end=\"13159\"><strong data-start=\"13054\" data-end=\"13076\">SPC control charts<\/strong> for pour rate, head loss and scrap rate to monitor filter performance over time.<\/p>\n<\/li>\n<li data-start=\"13160\" data-end=\"13256\">\n<p data-start=\"13162\" data-end=\"13256\"><strong data-start=\"13162\" data-end=\"13191\">Supplier performance data<\/strong> including recommended PPI ranges and recommended preheat cycles.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"13258\" data-end=\"13359\">Using formal acceptance criteria for each alloy and casting family helps maintain consistent quality.<\/p>\n<h2 data-start=\"13366\" data-end=\"13399\">Product specification examples<\/h2>\n<h3 data-start=\"13401\" data-end=\"13456\">Table 5 Representative ceramic foam filter catalog<\/h3>\n<div class=\"_tableContainer_1rjym_1\">\n<div class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"13458\" data-end=\"13842\">\n<thead data-start=\"13458\" data-end=\"13530\">\n<tr data-start=\"13458\" data-end=\"13530\">\n<th data-start=\"13458\" data-end=\"13466\" data-col-size=\"sm\">Model<\/th>\n<th data-start=\"13466\" data-end=\"13480\" data-col-size=\"sm\">Composition<\/th>\n<th data-start=\"13480\" data-end=\"13492\" data-col-size=\"sm\">PPI range<\/th>\n<th data-start=\"13492\" data-end=\"13507\" data-col-size=\"sm\">Thickness mm<\/th>\n<th data-start=\"13507\" data-end=\"13530\" data-col-size=\"sm\">Typical application<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"13556\" data-end=\"13842\">\n<tr data-start=\"13556\" data-end=\"13653\">\n<td data-start=\"13556\" data-end=\"13567\" data-col-size=\"sm\">CFF-Al20<\/td>\n<td data-col-size=\"sm\" data-start=\"13567\" data-end=\"13589\">High purity alumina<\/td>\n<td data-col-size=\"sm\" data-start=\"13589\" data-end=\"13602\">10, 20, 30<\/td>\n<td data-col-size=\"sm\" data-start=\"13602\" data-end=\"13617\">25 \/ 50 \/ 75<\/td>\n<td data-col-size=\"sm\" data-start=\"13617\" data-end=\"13653\">General purpose aluminum casting<\/td>\n<\/tr>\n<tr data-start=\"13654\" data-end=\"13745\">\n<td data-start=\"13654\" data-end=\"13666\" data-col-size=\"sm\">CFF-SiC30<\/td>\n<td data-col-size=\"sm\" data-start=\"13666\" data-end=\"13691\">SiC reinforced alumina<\/td>\n<td data-col-size=\"sm\" data-start=\"13691\" data-end=\"13700\">20, 30<\/td>\n<td data-col-size=\"sm\" data-start=\"13700\" data-end=\"13710\">25 \/ 50<\/td>\n<td data-col-size=\"sm\" data-start=\"13710\" data-end=\"13745\">Abrasive or rapid cycling lines<\/td>\n<\/tr>\n<tr data-start=\"13746\" data-end=\"13842\">\n<td data-start=\"13746\" data-end=\"13757\" data-col-size=\"sm\">CFF-ZR45<\/td>\n<td data-col-size=\"sm\" data-start=\"13757\" data-end=\"13777\">Zirconia enriched<\/td>\n<td data-col-size=\"sm\" data-start=\"13777\" data-end=\"13790\">30, 45, 60<\/td>\n<td data-col-size=\"sm\" data-start=\"13790\" data-end=\"13800\">25 \/ 50<\/td>\n<td data-col-size=\"sm\" data-start=\"13800\" data-end=\"13842\">Specialty high temp or corrosive melts<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"13844\" data-end=\"13917\">Custom sizes and shapes available for ADtech plate boxes and cup systems.<\/p>\n<p style=\"text-align: center;\" data-start=\"13844\" data-end=\"13917\"><a href=\"https:\/\/www.c-adtech.com\/contact-us\/\"><span style=\"color: #0000ff;\">Get Quote for Alumina Ceramic Foam Filters Now<\/span><\/a><\/p>\n<h2 data-start=\"13924\" data-end=\"13943\">FAQs<\/h2>\n<style>\n    .faq-container { font-family: \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif; max-width: 100%; margin: 25px 0; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden; }<br \/>    .faq-item { border-bottom: 1px solid #e0e0e0; background: #fff; }<br \/>    .faq-item:last-child { border-bottom: none; }<br \/>    .faq-item summary { font-weight: 600; font-size: 1.05rem; cursor: pointer; color: #2c3e50; padding: 18px 40px 18px 20px; list-style: none; position: relative; transition: background 0.3s; }<br \/>    .faq-item summary:hover { background: #f9f9f9; }<br \/>    .faq-item summary::-webkit-details-marker { display: none; }<span data-mce-type=\"bookmark\" style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" class=\"mce_SELRES_start\">\ufeff<\/span><br \/>    .faq-item summary::after { content: '+'; position: absolute; right: 20px; color: #ad8c42; font-size: 1.4rem; font-weight: bold; top: 50%; transform: translateY(-50%); transition: transform 0.3s; }<br \/>    .faq-item[open] summary { background: #fcfaf5; border-bottom: 1px solid #f0f0f0; }<br \/>    .faq-item[open] summary::after { content: '\u2212'; }<br \/>    .faq-answer { padding: 20px; color: #4f4f4f; line-height: 1.7; font-size: 0.95rem; background: #fff; }<br \/>    .faq-answer strong { color: #ad8c42; }<br \/><\/style>\n<div class=\"faq-container\">\n<details class=\"faq-item\">\n<summary>What PPI should I start with for general aluminum casting?<\/summary>\n<div class=\"faq-answer\">Start with a mid-range <strong>20 to 30 PPI<\/strong> filter, then validate using RPT and inclusion counts to refine to your specific alloy and gating.<\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>Why must ceramic filters be preheated?<\/summary>\n<div class=\"faq-answer\">Preheating <strong>removes moisture and reduces thermal shock risk<\/strong> which prevents cracking and dangerous steam events. Typical preheat times depend on filter size and oven capability.<\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>Can ceramic foam filters handle repeated thermal cycles?<\/summary>\n<div class=\"faq-answer\">Yes, when matched to the correct chemistry and quality rating. <strong>SiC and zirconia variants<\/strong> show superior thermal shock resistance for heavy cycling.<\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>How do I detect filter bypass?<\/summary>\n<div class=\"faq-answer\">Inspect seals and gaskets after installation, look for surface defects consistent with unfiltered metal, and measure head loss or pour rate anomalies. A bypass usually presents as <strong>no measurable improvement<\/strong> in inclusion counts.<\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>Are ceramic foam filters recyclable?<\/summary>\n<div class=\"faq-answer\">Spent filters contain trapped metal and dross. Many foundries recycle them through <strong>metal recovery streams<\/strong> after safe handling and crushing. Follow local regulations for waste handling.<\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>How often must I change filters?<\/summary>\n<div class=\"faq-answer\">Replacement intervals depend on <strong>pour volume, inclusion load and PPI<\/strong>. Monitor head loss and pour rates and keep logs to optimise replacement frequency.<\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>Can filters remove dissolved hydrogen?<\/summary>\n<div class=\"faq-answer\"><strong>No.<\/strong> Filters remove inclusions and condition flow. Hydrogen is dissolved and must be controlled through degassing processes such as rotary gas purging or vacuum treatments. Use filtration together with degassing for best results.<\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>What causes early filter clogging?<\/summary>\n<div class=\"faq-answer\">Excessive dross or sand, incorrect PPI selection, or insufficient upstream skimming and fluxing. Address with <strong>upstream cleaning<\/strong> and coarser initial filters if necessary.<\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>Do filter pore size and thickness affect pouring height limits?<\/summary>\n<div class=\"faq-answer\"><strong>Yes.<\/strong> Higher PPI and greater thickness increase head loss. In low pour height situations select <strong>lower PPI or larger filter area<\/strong> to keep acceptable flow rates.<\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>How should I validate a supplier claim about filter performance?<\/summary>\n<div class=\"faq-answer\">Ask for <strong>hydraulic pressure drop curves<\/strong>, recommended PPI ranges for your alloy, data from shop trials and third party test results such as RPT before and after filtration. Run a short pilot using your melt and geometries.<\/div>\n<\/details>\n<\/div>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What PPI should I start with for general aluminum casting?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Start with a mid-range 20 to 30 PPI filter, then validate using RPT and inclusion counts to refine to your specific alloy and gating.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why must ceramic filters be preheated?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Preheating removes moisture and reduces thermal shock risk which prevents cracking and dangerous steam events. 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Consumable costs rose modestly but were offset by reduced rework and faster finishing operations.<\/p>\n","protected":false},"featured_media":1929,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"tags":[],"products":[66],"class_list":["post-1928","product","type-product","status-publish","has-post-thumbnail","hentry","products-filter-purification-series"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ceramic Foam Filter: Alumina, SiC Specs for Molten Metal Casting Efficiency- AdTech<\/title>\n<meta name=\"description\" content=\"Enhance casting quality with AdTech Ceramic Foam Filters. 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