ZG42CrMo大型铸钢齿轮质量控制和热处理.pdf

学兔兔 Ju1．2OO9 铸 造 VOI．58 NO_7 FOUNDRY ·733· ， _、●· ■ 、●_ 、●● 、 {经验交流 } ’，●、 ■^■、_ _- ，__ — 一 ZG42CrMo大型铸钢齿轮质量控制与热处理 刘 林，蔡淑芳，刘黎南，刘艳斌 (北方重工沈阳重型机械集团有限责任公司，辽宁沈阳110025) 摘要：给出了ZG42CrMo合金铸钢大型球磨机大齿轮的铸造质量和成分控制原则。提出了在调质热处理工艺的淬火环 节上采取间歇式冷却方式，并通过调节淬火介质温度实现ZG42CrMo合金钢铸造大齿轮在剧烈冷却介质中的淬火冷却， 制定了相应的工艺参数，自行设计了淬火吊具。通过所给出的质量控制原则、调质热处理工艺以及相应的操作方法， 成功地进行了ZG42CrMo合金钢铸造大齿轮的淬火，齿轮性能完全满足要求，为大型合金钢铸件调质热处理技术的推 广应用提供了重要参考。 关键词：大齿轮；ZG42CrMo合金钢；铸件；调质热处理 中图分类号：TG260 文献标识码：B 文章编号：1001—4977(2009)07—0733—04 Quality Control and Heat Treatment of Large ZG42CrMo Cast SteeI Gear LIU Lin，CAI Shu—fang，LIU Li-nan，LIU Yan-bin (NHI Shenyang Heavy Machinery Group Co．，Ltd．，Shenyang 1 10025，Liaoning。China) Abstract：In the present study，the controI principles of casting quality and composition of large gear cast with ZG42CrMO alloy steel was given．The technological specification to quench ZG42CrMO alloy steel large gear in a tempestuous coolant，i．e．using intermittent cooling，and adjusting temperature of quenching media。was proposed．and the technologicaI parameters were determined．The Iifting tools were self-designed．Industrialized production of ZG42CrMo alloy steeI Iarge gear was successfully realized by using the principles。the technologicaI specification of heat treatment and the operation procedure proposed in the present study．The performance of large clear after heat treatment completely satisfies the requirement．The result of the present study supplies an important refe}rence to generalize the quenching and tempering heat treatment technology of al