第一重型机器厂担负的硬齿面伞齿轮、鼓形伞齿轮热处理及加工工艺研究,是国家机械委下达的科研课题。这两件齿轮是一重同国外合作制造的宝钢设备上的重要部件。这两种齿轮技术条件要求高,热处理要求硬化层沿齿廓均匀分布,齿面齿底有效淬硬层在两毫米以上,加工要求鼓形量为0.04到0.05毫米,研制难度很大。这个厂的技术人员,认真吸收消化 The first heavy machinery factory responsible for the hardened bevel gear, drum bevel gear heat treatment and processing technology research, the National Machinery Commission issued a research project. These two gears are an important part of Baosteel’s equipment that is jointly manufactured with foreign countries. These two kinds of gear require high technical requirements, heat treatment requires uniform distribution of the hardened layer along the tooth profile, tooth bottom effective hardened layer of more than two millimeters, the processing requirements of the drum-shaped amount of 0.04 to 0.05 mm, the development of a great difficulty. The factory technicians, carefully absorbed and digested