摘要
研究了氮在钢中的存在形式及增氮的热力学因素,优化全工艺流程控氮操作要点,达到精准控氮和控制钢中合适的Al/N细化晶粒等氮微合金化技术,解决了MnCr系列齿轮用钢在渗碳处理过程中,出现晶粒粗大和混晶等现象引起齿轮淬火变形和开裂等问题。
The existing form of nitrogen in steel and the thermodynamic factor of nitrogen increasing are studied.The key point of nitrogen control operation for the whole process are optimized.The nitrogen microalloying technology for precise nitrogen control and appropriate Al/N fine grain in steel are achieved.Consequently the problems such as quenching deformation and cracking of gear caused by coarse grain and mixed grain in the carburizing process of MnCr series gear steel are solved.
作者
丁志军
马玉强
Ding Zhijun;Ma Yuqiang(Hebei I&S Group Shijiazhuang I&S Co.,Ltd.)
出处
《河南冶金》
2020年第2期45-47,52,共4页
Henan Metallurgy
关键词
齿轮钢
氮微合金化
混晶
开裂
gear steel
nitrogen microalloying
mixed grain
cracking
