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Different refining agents have a great influence on the refining effect

2022-08-15

Different refining agents have a great influence on the refining effect. Considering the quality, cost, and delivery time, several suppliers must be prepared as alternatives. In this paper, the comparison between refining agent B and refining agent A is discussed. The relationship between ADC12 refining temperature and refining time, aluminum content in aluminum slag, and quality of aluminum ingot after refining with refining agent B is discussed. The results show that the appearance, hydrogen content, slag content, pinhole content, and crystallinity of aluminum ingot refined with refining agent B all conform to the quality requirements; Refining temperature of refining agent B is above 710 ℃, and the reaction between refining agent and liquid aluminum is slow; after refining, the aluminum slag floats on the surface of liquid aluminum in a loose state, the separation of aluminum slag is obvious, and there is slight slag burning phenomenon; by contrast, refining temperature (> 705), refining agent a for 35 min. After refining, 1 kg model is qualified before the furnace, and the refining time of refining flux B must reach 60 minutes to qualify. The use of the B refining agent must ensure that the refining time reaches the maximum of the process standard. 


Aluminum has the advantages of lightweight and high strength, pure aluminum has excellent electrical and thermal conductivity, the surface of aluminum reacts with oxygen to form transparent and dense alumina, has good corrosion resistance in the environment and oxidizing acids, and has good decorative and formability characteristics, has been widely used in the transportation industry, aviation, chemical machinery, building materials, household appliances, and other industries, and the demand is also increasing. Dissolved hydrogen and oxidation inclusion are the main factors affecting the purity of the solubilities of aluminum and its alloys. Among them, oxidation inclusions and hydrogen content are proportional to each other, and the oxidation inclusions are more, and the hydrogen content will increase. The presence of oxidative inclusions can form microscopic voids; The hydrogen content in the aluminum melt is too high, which will form pinholes, shrinkage, and other defects in the aluminum casting, and affect the casting performance of the aluminum alloy, reduce the flow performance of the aluminum melt and cause intergranular looseness. It can be seen that the purification of aluminum and aluminum alloy melts is quite important. At present, the recycled aluminum industry generally uses simple processes and low-cost refining fluxes to purify aluminum melts, thereby improving the recovery rate and melt quality of melt scrap aluminum. Different refining agents have a great impact on the refining effect, and for the sake of quality, cost, and delivery time, it is necessary to prepare several suppliers as alternatives. In this paper, the refining agent b is compared with the company's existing refining agent a to confirm the refining effect, aluminum water quality, etc.