激光切割的钻具热影响区裂纹形成的研究  

Research of the Form and Growth of Crack of in Hot Affected Zone for Drill by Pulsed CO_2 Laser Cutting

作　　者：焦健[1] 郭继富[1] 王林[1] 王铁宝[2] 李国彬[2] 

机构地区：[1]唐山冶金锯片有限公司,河北唐山063000 [2]河北工业大学,天津300132

出　　处：《冶金设备》2012年第3期17-21,共5页Metallurgical Equipment

摘　　要：采用脉冲CO2激光切割的钻具出现了断裂的现象。研究了断口的表面形貌及成分,以及热影响区的尺寸和显微组织;通过断口显微分析,探讨了热影响区显微裂纹的形成,并提出了相应的改进措施。The drill by pulsed CO2 laser cutting presents fracture. The morphology and element of fracture surface as well as the size and microstructure of heat affected zone are invesligated. By fracture analysis, the form of crack of heat affected zone are andyzed, and amelioration means is expatiated.

关 键 词：钻具 激光切割 热影响区 断裂 裂纹的形成 裂纹的扩展 

分 类 号：TG485[金属学及工艺—焊接]