保护气体对焊接工艺及其性能的影响
Research on Iron and Steel（2016）
Abstract
采用WER110S-G焊丝,匹配98 ％Ar+2％O2、80 ％Ar+20 ％CO2及CO2气体进行保护焊接试验,同时检测了其焊缝的性能.结果表明:当采用98 ％Ar+2 ％O2时,平板堆焊工艺性能尚可,但在坡口中室温条件下起焊时,电弧易产生飘移,焊缝高而窄,成形不太理想;采用80 ％Ar+ 20 ％CO2及CO2时,焊接工艺性能均较好,前者焊缝中C,Mn,Ti元素含量较高,焊缝强度及韧性均较高.
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