拖拉机联接轴盖缩孔问题的攻关

介绍了用保温冒口代替大气压力冒口 ,改进浇注系统解决铸件缩孔问题的经验。试验与实际生产结果表明 :铸件的表面缩孔彻底消除 。

Introduced is the experience in replacing atmosperic riser with thermal isolation riser and improving pouring system to eliminate shrinkages. Tests and production practice have proved that the surface shrinkages have been eliminated and cast quality significantly improved.