It is shown from results that increasing carburizing time further in the normal technology can not obviously deep the carburizing layer, but can cause nonmartensite microstructure at the bottom of the gear and coarse grain across the gear, these will heav
It is shown from results that increasing carburizing time further in the normal technology can not obviously deep the carburizing layer, but can cause nonmartensite microstructure at the bottom of the gear and coarse grain across the gear, these will heav
结果表明：在正常渗碳淬火工艺基础上再延长渗碳淬火1小时，齿轮渗碳层深度变化不大，但其齿根局部表面处有非马组织，且晶粒尺寸易产生异常长大现象，从而致使台架疲劳寿命明显下降。