论文部分内容阅读
本文介绍了加锡和加锰铸态珠光体球铁的试验结果;讨论了锡和锰对铸态和热处理后球铁组织和性能的影响;并简述了锡的作用机理。在此基础上,初步确定了符合QT70—2—1.5机械性能要求的290型柴油机曲轴的化学成份和生产工艺。
This paper describes the test results of tin and manganese plus as-cast pearlite ductile iron. The effects of tin and manganese on the microstructure and properties of ductile iron after as-cast and heat-treated ductile iron are discussed. The action mechanism of tin is also briefly described. On this basis, the chemical composition and production process of the crankshaft of Model No.290 were preliminarily determined in line with the mechanical performance requirements of QT70-2-1.5.