在上级党委的亲切关怀下,由于各兄弟单位的协助,液压涨形皮带轮的试验基本成功,并在生产上采用。过去,皮带轮的制造一直采用铸造后机械加工的方法。这种方法的工艺过程复杂,材料消耗多,生产效率低,零件重,铸造毛坯也易产生废品。为了改进皮带轮的生产,我们试验了辊压成形的方法。试验结果表明,辊压成形是有其优点的: Under the cordial concern of the party committee at a higher level, due to the assistance of various brothers and units, the test of the hydraulic hinging pulley basically succeeded and was adopted in production. In the past, the manufacture of pulleys has been machined after casting. This method has the advantages of complicated process, material consumption, low production efficiency, heavy parts, and casting of rough products. In order to improve the production of pulleys, we tested the method of roll forming. The test results show that roll forming has its advantages: