DISA线某整体式差速器壳体铸造工艺的开发  

Casting Method Development of Monolithic Differential Housing Produced on DISA Molding Line

作　　者：龚华林 刘金林 GONG Hua-lin;LIU Jin-lin(Shanghai Sandmann Foundry Co.,Ltd.,Shanghai 201805,China)

机构地区：[1]上海圣德曼铸造有限公司,上海201805

出　　处：《现代铸铁》2024年第2期5-10,共6页Modern Cast Iron

摘　　要：介绍了某整体式差速器壳体铸件的结构及技术要求,详细阐述了DISA线生产差速器壳体的铸造工艺开发过程,在开发前期,使用MAGMA数值模拟软件对设计的铸造工艺进行模拟分析,研究了3种冒口的工艺方案,后续选择模拟结果最优、工艺出品率最高的方案进行实际生产试制。试制结果显示:内部缺陷达到D3/1的目标,铸件外观缺陷4.8%,加工外观缺陷率为0。最后指出:(1)通过二级横浇道的浇注系统设计,对差速器壳体外观砂孔的改善非常明显;(2)通过合适的冒口设计,差速器壳体的长轴头孔不铸出,即采用长轴头位置填充工艺,后续可通过机加工将缩孔、缩松连同填充位置一起加工掉,实现差速器壳体内部缺陷达到D3/1的目标。The structure and technical requirements of a monolithic differential housing were introduced,the casting method development process of differential housing produced on DISA molding line was described in details.In the early stage of development using MAGMA numeral simulation software simulated the designed casting method,investigated 3 riser method schemes,then selected the scheme with the best simulation results and the highest process production rate for the actual production and trial production.Trial-production results showed that:the internal defect reached the target of D3/1,the casting appearance defect was 4.8%,and the appearance defect rate after machining was 0.Finally it was pointed out:(1)By using two steps of runners,outer surface sand inclusion eliminating effect was very obvious.(2)By proper riser design,the long axis end hole was not cast out,adopting long axis end being filled,then the shrinkage and filled end could be eliminated by machining and thereby realized the target that the inner defect of differential housing reaching D3/1.

关 键 词：球墨铸铁 差速器壳体 铸造工艺 

分 类 号：TG255[金属学及工艺—铸造]