作　　者： ;

机构地区： 广西机电职业技术学院

出　　处： 《电焊机》 2007年第9期62-64,共3页

摘　　要： 在分析了以往焊补的轴颈在使用较短时间内产生裂纹和断裂原因的基础上,较详细地介绍了从减少焊接残余应力和确保焊缝质量入手,采用细焊丝、小线能量CO2气体保护焊堆焊轴颈磨损面的工艺和操作要点。使用结果表明:该焊接工艺方法成功地解决了轴颈在使用过程中产生的疲劳裂纹和疲劳断裂的技术问题;较以往焊补的轴颈使用3～5个月就产生裂纹甚至断裂相比,提高了其使用寿命3.6～6.0倍;仅计算提高修复后轴颈的使用寿命和延长其再次修复的时间,对制糖企业产生了可观的经济效益。 Based on the analysis of the reasons why cracks and fractures occur on welding-repaired journal after a short time service, the paper,by reducing welding residual stress and ensuring welding quality,introduces in detail the welding technology and key operative points of employing thin welding rod and CO2 arc welding with thin wire to protect the abrasive surface of the journal.The practice shows that the welding technology has successfully solved the technical problem of fatigue cracks and fatigue fractures on the journal in use;compared with that of the journal of welding repaired technology having cracks and even fractures after 3 to 5 months in service,the service life of the journal has increased by 3.6 to 6.0 times.Merely considering the increased service life and extended re-repairing time of the journal,this technology will bring considerable social and economic benefits to sugar industry.

关 键 词： 轴颈 堆焊 焊接残余应力 气体保护焊

领　　域： [金属学及工艺]