45号钢液压缸MAG自动焊无预热焊接工艺  

Automatic MAG welding of 45 steel cylinder without preheating

作　　者：方乃文[1] 李连胜[1] 陈默[1] 齐万利[1] 杨子佳[1] 李苏珊[1] 韦金钰 周阿芳[2] 

机构地区：[1]机械科学研究院哈尔滨焊接研究所,150028 [2]徐州徐工液压件有限公司,221004

出　　处：《焊接》2013年第7期35-39,71,共5页Welding & Joining

摘　　要：液压缸筒是液压缸的关键零件,由于其筒径大和筒壁厚,采用传统的焊条电弧焊工艺很难达到其质量及效率要求;通过采用MAG自动焊、合理的焊接工艺规范进行焊接,结果表明:45号钢焊接接头性能良好、焊缝金相组织无缺陷,焊缝区硬度分布均匀,无需预热及焊后热处理即可获得高质量的焊接接头。As the key part of hydraulic cylinder,hydraulic cylinder pipe has the large cylinder diameter and the thick cylinder wall,so the traditional manual electric arc welding is very difficult to meet its quality and efficiency requirements.The results show that the reasonable welding procedure specification can obtain high welding quality and efficiency by MAG automatic welding without preheating and post weld heat treatment.

关 键 词：液压缸筒MAG自动焊工艺参数45号钢 

分 类 号：TG444.2[金属学及工艺—焊接]