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Steels and Heat Treatment Quality Control of Gear(Ⅰ)

CHEN Guo-min(Zhengzhou Mechanical Research Institute,Zhengzhou Henan450052,China)  
The gear -used steels and heat treatment have important effect on gear quality.In this paper the application classification for gear-used steels,metallurgy and forging quality control are described.The application,influence factors and process control of four kinds of heat treatment methods including tempering,carburizing,nitriding and induction quenching are analyzed.There are many factors influencing gear-used steels and heat treatment quality.Only strictly controlling these factors,the quality of gears can be effectively ensured,consequently the strength and life of gear products can be improved,and machinability and productivity can be improved.
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