Reasons why the carbon content of stainless steel castings is too high

Stainless steel castings have caused some waste of resources. Many people do not understand this reason. It is necessary to avoid stainless steel castings for castings produced from various stainless steel materials. They are mainly used for various medium corrosion conditions. For stainless steel castings, the amount of carbon generally leads to alloy steel Castings become defective products.

Stainless steel castings Stainless steel castings cause the temperature of the pouring liquid steel to be low, and the pouring conditions for alloy steel castings are unreasonable: if the pouring filling process is set too long. Especially for the increase in wall thickness of the castings, the solidification speed of the pouring steel solution is slow, which increases the casting time. Carbon seepage and carbon accumulation in steel parts.

In particular, the carbon content in various scrap steels and whether there are materials with other alloy components in various scrap steels are not clear. The carbon content in the smelting components of alloy steel castings is not strictly controlled.

During the casting process, the pouring system settings of alloy steel castings are unreasonable: especially the configuration of the vacuum system and pouring sand box or casting process is unreasonable. The thermal decomposition products cannot be discharged from the pouring cavity quickly and quickly, resulting in carburization or carbonization of the castings. sedimentation.