foam ceramic filter uses

Correct application of the ceramic foam filter: ① filter metal liquid flows into

the surface, the sprue is designed as an open system. Effective use of ceramic foam filters area;

② Pass the ceramic foam filter has a suitable clearance, after it is placed, the ceramic foam filter can prevent the side of the sand mold wipe the sand and close the box to press the sand to avoid the falling and scattered sand particles from being brought into the mold;

The metal liquid outflow surface of the filter should have a support width of ≥5mm, which is effective when pouring

Play the role of pouring pressure support.

The effect of the correct application of ceramic foam filters:

①Effectively filter impurities and improve the solution purity of molten metal;

②Reduce turbulent air entrainment, so that the molten metal filling is stable, and the structure of the casting is divided into uniform cloth;

③Reduce casting defects, and improve the surface quality and yield, which is beneficial to

Machining to reduce manufacturing costs.

▲ Case 1 of wrong application of foam ceramic filter:

Figure 1 Horizontal installation on sprue

Figure 2 Vertical installation on the runner

Figure 3 Horizontal placement on the runner

C M Y KFOSHAN CERAMICS Vol.30 No.04 (Serial No.285)

The molten metal of the filter flows into the surface, and the sprue is not designed with an open system.

system. The filter does not achieve optimal effective use of the filter area, instead, the gold

The impact force and static pressure of the metal liquid on the foam ceramic filter increase, making it easy to come out.

The ceramic foam filter is now crushed, see Figure 4 for details.

The gating system is not designed to open the wrong application of the foam ceramic filter

s consequence:

① The filter area becomes smaller, which affects the flow rate of the molten metal;

②When pouring, the filter is subject to the maximum impact force and static pressure of the molten metal

force, it is easy to cause the filter to be broken;

③ The filter area of the filter is not effectively used, resulting in wasted waste

filter cost.

▲ Case 2 of wrong application of foam ceramic filter:

The upper profile of the filter is designed with a 0mm gap, when the filter thickness gauge

When the upper limit of inch fluctuation is reached, the sand mold, sprue and filter seat will be crushed when the box is closed.

Detachment is easy to occur, see Figure 5 for details.