一种马氏体不锈钢精加工后PT缺陷修补工艺  

Defect Repairing Process after Finishing of Martensitic Stainless Steel

作　　者：李成志 郭宁 王龙虎 陈得润 田定琪 LI Cheng-zhi;GUO Ning;WANG Long-hu;CHEN De-run;TIAN Ding-qi(Kocel Steel Foundry Co.,Ltd.,Yinchuan Ningxia 750021,China)

机构地区：[1]共享铸钢有限公司,宁夏银川750021

出　　处：《铸造设备与工艺》2022年第5期49-51,64,共4页Foundry Equipment & Technology

摘　　要：介绍了一种采用高精密金属补焊机对铸件精加工后PT缺陷进行修补的方法。采用高精密金属补焊机和氩弧焊两种焊接方法进行焊接,通过对比修补后的表面质量及微观组织,发现使用高精密金属补焊机修复表面缺陷得到的焊缝热影响区小,成型美观,表面无缺陷,焊补区和母材区硬度差值小,符合标准。对焊缝的力学性能进行验证,均满足产品要求。This article introduces a rework method that uses a precision metal repair welding machine to repair Penetration testing defects after finishing castings.Two welding methods:high-precision metal repair welding machine and argon arc welding are used for welding.By comparing the surface quality and microstructure after welding,it is found that the heat-affected zone of the weld obtained by using high-precision metal repair welding machine to repair surface defects is small,the shape and surface is beautiful.There is no defect,the hardness difference between the weld repair area and the base metal area is small,which meets the standard.The mechanical properties of the welds were verified,and they all met the product requirements.

关 键 词：精密金属补焊机 表面修补 马氏体不锈钢 

分 类 号：TG455[金属学及工艺—焊接]