根据对多家V型皮带轮生产企业的跟踪与调查,分析了目前常规防缩工艺措施存在的问题,提出了用埋入式外冷铁激冷、分体式槽型砂芯铸造两种工艺措施和实施方案。 Based on the tracking and investigation of a number of V-belt pulleys manufacturing enterprises, the problems existing in the conventional shrink-proof process are analyzed. Two process measures of embedding external chilled iron chilling and split groove sand core casting are put forward Program.