20CrMnTiH热锻齿坯加工过程中产生裂纹原因分析  

The Analysis of Cracks in 20CrMnTiH Hot Forging Gear

作　　者：赵贺楠 刘年富 Zhao Henan;Liu Nianfu(Baowu Group Guangdong Shaoguan Iron and Steel Co.,Ltd.,Shaoguan Guangdong 512123)

机构地区：[1]宝武集团广东韶关钢铁有限公司,广东韶关512123

出　　处：《山西冶金》2020年第1期89-90,共2页Shanxi Metallurgy

摘　　要：使用Φ130 mm规格的20CrMnTiH圆钢加工热锻齿坯,在已锻造的400个热锻齿坯中发现约20%存在裂纹。采用ARL3460直读光谱仪、金相显微镜和扫描电镜对20CrMnTiH热锻齿坯试样进行分析。分析结果表明,20CrMnTiH热锻齿坯试样上的裂纹是钢材在锻造过程中产生的。20CrMnTiH round steel with specification ofΦ130 mm is used to process hot forging gear blank,cracks were found in about 20%of the 400 hot forging blanks.The sample of 20CrMnTiH hot forging gear blank was analyzed by ARL3460 direct reading spectrometer,metallographic microscope and scanning electron microscope.The analysis results show that the cracks on 20CrMnTiH hot forging gear are caused by the forging process of steel.

关 键 词：热锻齿坯 20CrMnTiH 裂纹 

分 类 号：TG311[金属学及工艺—金属压力加工]