氮微合金化技术在渗碳齿轮钢上的应用  

APPLICATION OF NITROGEN MICROALLOYING TECHNOLOGY IN CARBURIZED GEAR STEEL

作　　者：丁志军[1] 马玉强 Ding Zhijun;Ma Yuqiang(Hebei I&S Group Shijiazhuang I&S Co.,Ltd.)

机构地区：[1]河北钢铁集团石钢公司炼钢厂,河北石家庄050031

出　　处：《河南冶金》2020年第2期45-47,52,共4页Henan Metallurgy

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.

关 键 词：齿轮钢 氮微合金化 混晶 开裂 

分 类 号：TG156.81[金属学及工艺—热处理] TG142[金属学及工艺—金属学]