What Are The Causes Of Yellow And Moldy Die Casting Parts?
Oct 24, 2023| Moom phenomenon: Mainly not moisture -proof treatment, yellowing: The concentration of demarculating agent during cutting liquid oxidation and die casting.
It is the problem of the residue removal during the treatment of aluminum alloy solution. The residue dehumidifier lacks the content of fluorine salt. For more common treatment, die casting parts manufacturers adding 0.2-- 0.5 sodium fluoro alumic acid to the aluminum alloy solution to prevent the mold after processing.
After the processing of aluminum alloys, the process should be cleaned after processing. Mold (black) yellow should be the result of crumbs and liquid oxidation. The problem is not big.
If there is a similar phenomenon, there may be two reasons: first. The results of the crumbs after oxidation 2. The water left after the product is cooled.
The main reason for moisture, aluminum die casting parts there is a problem with spraying paint! After a long time, the product surface will cause mold after oxidation.
Aluminum alloys are bisexual metals. In the case of acidic or alkaline substances, it will turn into different colors. If the cutting fluid is not selected in the process of mechanical processing, after a period of time The phenomenon is actually generating substrate corrosion. One of the solutions is to select a neutral cutting fluid. The fundamental method is to form a layer of membrane on the surface to prevent the emergence of corrosion.