支座体铝合金铸件工艺设计

Technology Design of Support Frame Aluminum Alloy Casting

通过不同的工艺方案的对比,采用的工艺方案:大法兰朝下、整体型芯、中注式浇注系统、三箱造型;加大横浇道的尺寸,对下法兰起到有效补缩和挡渣的作用;采用加大尺寸的变壁冷铁与大法兰处平面冷铁配合使用,可实现自下而上的顺序凝固。工艺改进后生产出的支座体铝合金铸件满足使用性能要求,而且提高了工艺出品率和劳动生产率,产品一次交检合格率达到要求。

Through contrast of different process schemes, the characters of process scheme adopted are as follows downward large flange, whole core, parting-line gating system, three-box modeling; increasing the runner size has effective feeding and slag stopping effects on the lower flange; by cooperative use of the increased-size changed-wall chill and fitting plane chill at flange, sequential solidification from bottom to top can be realized. Not only the castings produced after improvement met the performance requirements, but also the technology yield and labor productivity were greatly improved, and the product＇s qualified rate reached the requirements of production.