前言中型柴油机曲轴锻件,采用全纤维镦锻法生产,国外五十年代就广泛流行了,主要使用法国的R—R法镦锻技术。六十年代波兰研制了T—R法,七十年代投入生产,目前已为一些工艺较先进国家所采用。但两者只是使用装置上有所不同,从工艺变形的概念上来看并没有什么不同。国内柴油机曲轴锻件,自一九六四年在R—R法的基础上研制成功后,到目前为止 Foreword Medium-sized diesel crankshaft forgings, the use of all-fiber upsetting production, the widespread foreign fifties, the main use of the French R-R upsetting technology. In the 1960s, Poland developed the T-R method, which was put into production in the 1970s and has been adopted by some of the more advanced countries. However, the two are different from each other in their use of the device, and are not different from the concept of process distortion. Domestic diesel crankshaft forgings, since 1964 on the basis of the R-R method developed successfully, so far