Negative pressure solid throw casting(EPCTechnology)It is a new technology in development,In domestic and international production practices, on the one hand, large-scale industrial production with a high degree of mechanization and automation has been achieved,Accumulated relatively mature experience; On the other hand, there are still many problems that need to be further discussed and solved. In terms of material,The production of cast aluminum parts and most cast iron parts has been successful and has increasingly broad application prospects. However, its application in cast steel parts lags behind relatively. At present, the research on the carbon increase law, mechanism and solutions of cast steel parts is very weak, resulting in large defects in castings and becoming an obstacleEPCThe main reasons for the further promotion and application of technology.

　　Many factories are urgently seeking technical measures to eliminate the defects of carbon increase,Looking forward to a further expanded application scope,Meanwhile, carburizing will deteriorate the processing performance of the castings and have an adverse impact on the quality. This is particularly evident for some low-carbon steel and low-carbon alloy steel castings with high requirements. Therefore,It will be necessary to control and prevent carburizing of castings. To achieve this, it is necessary to understand the causes and influencing factors of carburization on the surface of cast steel parts.


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