42CrMo轴类零件焊接修复工艺  

Welding repair procedure of 42CrMo shaft part

作　　者：杨永强 欧阳建国 董立峰[2] 李川 郑春雷[2] Yang Yongqiang;Ouyang Jianguo;Dong Lifeng;Li Chuan;Zheng Chunlei(Juli Sling Co.,Ltd.,Hebei Province Sling Engineering Technology Research Center,Baoding 072550,China;Yanshan University,College of Material Science and Engineering,Qinhuangdao 066004,China;CITIC Dicastal Co.,Ltd.,Qinhuangdao 066011,China)

机构地区：[1]巨力索具股份有限公司河北省吊索具工程技术研究中心,河北保定072550 [2]燕山大学材料学院,河北秦皇岛066004 [3]中信戴卡股份有限公司,河北秦皇岛066011

出　　处：《金属制品》2021年第6期59-60,64,共3页Metal Products

基　　金：国家重点计划(2017YFB0304501)。

摘　　要：对42CrMo大型轴加工表面缺陷进行焊接修补,选用型号ER55-G的1.2 mm JM-68实心焊丝,工件焊前预热温度为350℃,层间温度控制在400℃以内,焊接线能量在1 KJ/mm以内,焊后进行620℃去应力退火处理,修补后的工件表面无缺陷并满足荷载要求。Diameter 1.2 mm JM-68 solid welding wire of ER55-G is selected to repair surface defect of 42CrMo large shaft machining.The preheating temperature of workpiece before welding is 350℃,temperature between layers is controlled within 400℃,welding line energy is within 1 KJ/mm,stress relief annealing with holding temperature of 620℃is adopted,the repaired workpiece surface has no defects and meets load requirements after repairing.

关 键 词：42CrMo 焊接 实心焊丝 去应力退火 

分 类 号：TG455[金属学及工艺—焊接]