2023年5月第3期《大型铸锻件》HEAVYCASTINGANDFORGINGMay2023No.3■■■■■■■■■■■■■■铸造砂型、砂芯排气工艺在大型铸钢件中的应用牟成海郑小平段善东李江龚斌王浩(二重(德阳)重型装备有限公司,四川德阳618013)摘要:介绍了大型铸钢件砂型、砂芯排气的重要作用及排气系统的工艺设计和应用。根据大型铸钢件的实际生产经验,对造型原辅材料质量指标的控制、砂型烘干工艺、工装出气孔设计、排气通道及排气方法等方面进行归纳总结,形成了机架、汽缸等大型铸钢件科学、合理的砂型、砂芯排气工艺,完善了大型铸钢件的铸造工艺设计,提升了大型铸钢件的质量。关键词:大型铸钢件;砂型;砂芯;通气绳;排气;透气性;铸件质量中图分类号:TG24文献标志码:AApplicationofSandMoldandSandCoreExhaustProcessinLargeSteelCastingsMouChenghai,ZhengXiaoping,DuanShandong,LiJiang,GongBin,WangHaoAbstract:Thispaperintroducestheimportantroleofsandmoldandsandcoreexhaustoflargesteelcastingsandtheprocessdesignandapplicationofexhaustsystem.Accordingtotheactualproductionexperienceoflargesteelcastings,thecontrolofthequalityindexoftherawandauxiliarymaterials,thedryingprocessofthesandmold,thedesignoftheairholeofthetooling,theexhaustchannelandtheexhaustmethodhavebeensummarized.Thescientificandreasonablesandmoldandsandcoreexhaustprocessoflargesteelcastingssuchasframeandcylinderhasbeenformed,thecastingprocessdesignoflargesteelcastings...