齿轮钢棒材锯切障碍成因分析  

CAUSE ANALYSIS ON THE SAWING OBSTACLES OF GEAR STEEL

作　　者：赵亮[1] 杜亚伟[1] 郭秋实 刘勇[1] 

机构地区：[1]安阳钢铁集团有限责任公司 [2]厦门钨业股份有限公司

出　　处：《河南冶金》2017年第6期12-15,28,共5页Henan Metallurgy

摘　　要：为避免齿轮钢18CrMnBH棒材锯切障碍问题,采用显微硬度计、光学显微镜和能谱仪等,研究了其锯切障碍的形成原因。结果表明,棒材截面存在尺寸为40μm^80μm的硬度较大的密集程度较高的夹杂物,造成棒材截面硬度波动ΔHV>94,是产生18CrMnBH齿轮钢锯切障碍的主要原因。在此基础上提出了相应的改进措施。In order to avoid the sawing obstacles of gear steel 18 CrMnBH,the forming reason of sawing obstacles was investigated using microhardness tester,OM and EDS. The results showed that there have inclusions of size of 40 μm ~80 μm,these inclusion possess larger hardness and high intensity and cause hardness wave ΔHV>94 HV of the bar section.These were the main causes of sawing obstacles of gear steel 18 CrMnBH. Based on which,the corresponding improvement measures are put forward.

关 键 词：齿轮钢 锯切障碍 显微硬度 夹杂物 

分 类 号：TG561[金属学及工艺—金属切削加工及机床]