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Stainless steel casting high carbon content analysis
Carbon content is too high will cause the alloy steel castings become bad products, resulting in the waste of resources, many people do not understand the reasons, we only understand the reason it occurs before we can take measures to avoid it, then we introduce the alloy Steel casting carbon content is too high reason:
01
Casting conditions of alloy steel castings set unreasonable: If the process of pouring filling set too long, resulting in pouring process pouring molten steel temperature is low, especially for casting wall thickness increases the location of pouring molten steel solidification slow, resulting in liquid Phase - solid residence time longer, prompting the molten steel and the thermal decomposition products look like the role of time increased, increasing the carburizing and carbon deposition of steel castings.
02
Alloy steel casting production of smelting ingredients in the carbon content is not strictly controlled, in particular the various types of scrap carbon content and all kinds of scrap is there any other alloy composition of the material is unknown.
03
Alloy steel castings pouring system set unreasonable: In particular, the vacuum system and casting sandbox or casting casting process configuration is irrational, resulting in casting casting process, casting sandbox within the vacuum range, the deviation is too large, Or the actual vacuum is not enough, and the vacuum pressure gauge shows that it is in line with the technical parameters of the wrong values, so that the thermal decomposition products can not quickly and easily discharge the casting cavity, causing the casting of carburizing or carbon deposition.
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