20CrMnTiH齿轮在加工过程中产生裂纹的原因分析  

Analysis of the Causes of Cracks in Gears 20CrMnTiH during Machining

作　　者：赵贺楠 田学锋 ZHAO He-nan;TIAN Xue-feng(Guangdong Songshan Polytechnic College,Shaoguan,Guangdong,512126,P.R.China)

机构地区：[1]广东松山职业技术学院,广东韶关512126

出　　处：《南方金属》2025年第1期23-25,共3页Southern Metals

摘　　要：Φ42 mm规格的20CrMnTiH圆钢,在加工成主动齿毛坯的过程中发现裂纹,采用型号ARL3460的直读光谱仪、扫描电镜和金相显微镜对20CrMnTiH主动齿毛坯试样进行分析。结果表明,20CrMnTiH主动齿毛坯表面裂纹为试样在锻造加热过程中过烧导致。Cracks were found during the processing ofΦ42mm round steel 20CrMnTiH into driving gear blanks.The blank samples were analyzed by means of using ARL3460 direct reading spectrometer,scanning electron microscope,and metallographic microscope.The analysis results indicate that the surface cracks of the blank are caused by overburning during the forging heating process of the samples.

关 键 词：过烧缺陷 20CrMnTiH 主动齿 

分 类 号：TG142.1[一般工业技术—材料科学与工程]