GCr15钢球化退火新工艺的研究  

Studies of New Spheroidizing Annealing Process of GCr15 Steel

作　　者：王洪霞[1] 

机构地区：[1]盐城工学院材料工程学院,江苏盐城224000

出　　处：《盐城工学院学报（自然科学版）》2011年第4期26-29,共4页Journal of Yancheng Institute of Technology:Natural Science Edition

摘　　要：主要研究了奥氏体化加热温度和奥氏体化保温时间对GCr15钢的球化组织的影响。分析得出GCr15钢最佳的球化退火工艺为:在790℃保温3 h然后在720℃保温3 h。GCr15钢在该工艺条件下获得的碳化物颗粒细小、分布均匀、硬度适当,大大缩短了球化退火时间,节约了能源。This paper studied the influence of heating temperature and holding time during austenization on the inner structure of GCr15 steel.The optimal condition for isothermal spheroidizing annealing will be selected.The appropriate isothermal annealing condition could result in microstructure in uniform distribution and small cementite particles with obvious spheroidizing effect.In addition,the hardness of the steel decreased,which resulted in better machining performance,less spheroidization time and less energy cost.

关 键 词：GCR15钢 球化退火 碳化物 

分 类 号：TF124.8[冶金工程—粉末冶金]