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为消除精铸件的表面脱碳,选用各种含碳较高的物质作保护,在密封条件下凝固和冷却等工艺方案,进行了试验,取得了系统的实际数据和各种工艺参数,并用于指导生产实践,能获得不脱碳或轻度脱碳的精铸件。
In order to eliminate the decarburization on the surface of castings, a variety of high carbon content materials were selected for protection and the process scheme of solidification and cooling under sealed conditions was tested. The actual system data and various process parameters were obtained and used in Guide the production practice, can not decarburization or mild decarburization of the casting.