Preparation method of mold release agent for remelting aluminum ingots

Abstract

The invention discloses a mold release agent for remelting aluminum ingots. The mold release agent for the remelting aluminum ingots is prepared from megilp, silane, titanium dioxide, talcum powder and dust collection powder for aluminum ash treatment. According to the technical features that existing ingot casting equipment in the aluminum industry is higher in yield, machine speed and working temperature, through optimization and adjustment of a formula of the mold release agent, the adhesive effect of the mold release agent is improved, the effective service life of the mold release agent in a high-temperature water bath environment is prolonged, and therefore the effects of prolonging a mold release effect and stabilizing the surface quality of the aluminum ingots are achieved. The defects that existing mold release agents are short in persistent period during use and unstable in quality are overcome.

Description

technical field [0001] The invention belongs to the field of mold release agents for metallurgical casting, in particular to a mold release agent for remelted aluminum ingots and a preparation method thereof. Background technique [0002] The casting of aluminum ingots for remelting usually adopts a horizontal continuous casting machine. The cooling of the ingot mold adopts one-stage water bath cooling and two-stage spray cooling. After cooling, the volume of the aluminum ingot shrinks and the mold is released naturally. In actual production, since the water contains calcium and magnesium ions, the thermal conductivity of the water channel will decrease after scaling. At the same time, the water temperature will gradually increase during the operation of the circulating water, resulting in a continuous decline in the cooling effect and difficulty in demoulding the aluminum ingot. [0003] Some enterprises use talcum powder to assist the demoulding of aluminum ingots, but thi...

AI Technical Summary

Problems solved by technology

In actual production, due to the calcium and magnesium ions in the water, the thermal conductivity of the water channel will decrease after scaling, and at the same time, the water temperature will gradually increase during the operation of the circulating water, resulting in a continuous decline in the cooling effect and difficulty in demoulding the aluminum ingot

[0003] Some enterprises use talcum powder to assist the demoulding of aluminum ingots, but this has a certain impact on the appearance quality of aluminum ingots; out of cost considerations, some enterprises use manual ingot prying and external water cooling, resulting in increased water resource consumption and aluminum ingots. There are a large number of defects such as oxidation and cold shut in the appearance of the ingot, which cannot meet the appearance quality requirements of the national standard (GB-T1196-2008)

[0004] At present, there are many types of release agents for aluminum ingots on the market, but they generally have defects such as high price, poor durability, and unstable quality. After two cycles of release agent coating, the smoothness of the appearance of aluminum ingots will gradually decrease. , affecting the service life of the casting mold, it is difficult to meet the needs of enterprises to produce aluminum ingots for remelting