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前言过去多采用低碳合金钢并经过渗碳或碳氮共渗淬火热处理来制造拖拉机传动齿轮。这些齿轮用钢大多数含有我国稀缺的铬、镍元素,不符合我国资源情况。为此,一机部、冶金部于1969年组织了有关工厂、高校、科研单位(包头钢铁公司冶金研究所、大冶钢厂、齐齐哈尔钢厂、涟源钢厂、包头钢厂、洛阳拖拉机厂、上海拖拉机厂、沈阳拖拉机厂、松江拖拉机厂、武汉拖拉机厂、无锡县拖拉机厂、莱阳拖拉机厂、武汉齿轮厂、齐齐哈尔齿轮厂、常州齿轮厂、福建农机厂、西安交通大学、一机部洛阳拖拉机研究所等)开展“低淬透性钢齿轮”的研究。把含碳量为0.55～0.70%的优质碳素钢中的锰、硅含量降低,改变脱氧工艺,并加入少量
Preface The past, the use of low-carbon alloy steel and carburizing or carbonitriding quenching heat treatment to create tractor transmission gear. Most of these gear steel contains China’s scarce chromium and nickel elements, does not meet China’s resource situation. To this end, a machinery department, the Ministry of Metallurgical in 1969 organized the factories, universities, research institutes (Baotou Iron and Steel Metallurgical Institute, Daye Steel, Qiqihar Steel, Lianyuan Steel, Baotou Steel, Luoyang Tractor Factory , Shanghai Tractor Factory, Shenyang Tractor Factory, Songjiang Tractor Factory, Wuhan Tractor Factory, Wuxi Tractor Factory, Laiyang Tractor Factory, Wuhan Gear Factory, Qiqihar Gear Factory, Changzhou Gear Factory, Fujian Agricultural Machinery Factory, Xi’an Jiaotong University, Tractor Institute, etc.) to carry out “low hardenability steel gear ” research. The carbon content of 0.55 ~ 0.70% of high-quality carbon steel manganese, silicon content decreased, change the deoxy process, and add a small amount