论文部分内容阅读
我厂从1979年开始,为提高三联齿轮箱中人字齿轴的使用寿命,将其原来的调质硬度HB220～250提高到HB300～320,且在调质前先粗铣齿槽(简称“开齿”),使精铣齿成形后的实际硬度符合上述要求。人字齿轮轴的调质硬度提高后,原先使用的普通高速钢W18Cr4V指形铣刀就很易磨损。为此,我厂试用由北京钢院研制、大冶钢厂协助试制的W12Mo3Cr4V3N高速钢(简称“V3N”),制成指形铣刀,经铣切后取得较好效果。
I plant from 1979, in order to improve the service life of herringbone shaft in the triple gearbox, the original hardness of HB220 ~ 250 raised to HB300 ~ 320, and before quenching and milling coarse cogging (referred to as “ Open teeth ”), so that the actual hardness of the finished milling teeth meet the above requirements. Herringbone shaft quenching hardness increased, the original use of ordinary high-speed steel W18Cr4V finger cutter is very easy to wear. To this end, I plant trial developed by Beijing Steel Institute, Daye Steel trial production of W12Mo3Cr4V3N high-speed steel (referred to as “V3N”), made of finger-type milling cutter, after milling obtained better results.