高纯净GCr15轴承钢组织演变与快速球化工艺的研究

来源期刊：钢铁2010年第12期

论文作者：闫文凯 杨卯生 杜景红 俞峰

文章页码：63 - 67

关键词：轴承钢； 碳化物； 球化退火

Key words：bearing steel； carbide； spheroidizing annealing

摘    要：利用碳化物的金相形貌、数量、大小、分布及圆整度表征试验钢的球化质量,通过不同的热处理制度研究高纯净GCr15轴承钢预备组织与退火工艺对碳化物球化质量的影响。试验表明:优良的预备组织适宜的退火制度有利于碳化物在短时间内球化和细化,采用文中退火制度a,GCr15轴承钢碳化物圆整度为0.087μm、平均粒径为0.27μm,球化时间比传统工艺减少3.5 h。

Abstract: Spheroidal quality can be taken by metallographic morphology,number,size,distribution and the roundness characteristics of carbide.The effect of existed microstructures and annealing process on spheroidal quality of carbides was investigated for the high-purity of GCr15 bearing steel through different heat treatment processes.The results show that the good existed microstructures and proper annealing systems are helpful to the spheroidizing and refinement in short time.Based on the annealing schedule a,the spheroidal time is shorter than traditional process by 3.5 h for the GCr15 bearing steel,its roundness is about 0.087 μm and the average particle size is about 0.27 μm.