不锈钢焊管的焊接步骤

摘要：<span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";"><span style="font-size:small;">不锈钢焊管的焊接步骤</span></span> </p> <span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";"><span style="font-size:small;">很多朋友在刚接触不锈钢焊管焊接行业的时候都不太懂得焊接技术，那么小编就向你介绍不锈钢焊管的焊接步骤：</span></span> </p> <span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">1.</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">采用垂直外特性的电源</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">直流时采用正极性</span><span style="font-family:'Times New Roman';"><span lang="EN-US">(</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">焊丝接负极</span><span style="font-family:'Times New Roman';"><span lang="EN-US">)</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">。</span></span> </p> <span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">2.</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">一般适合于</span><span style="font-family:'Times New Roman';"><span lang="EN-US">6mm</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">以下薄板的焊接</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">具有焊缝成型美观</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">焊接变形量小的特点。</span></span> </p> <span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">3.</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">保护气体为氩气</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">纯度为</span><span style="font-family:'Times New Roman';"><span lang="EN-US">99.99%</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">。当焊接电流为</span><span style="font-family:'Times New Roman';"><span lang="EN-US">50~50A</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">时</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">氩气流量为</span><span style="font-family:'Times New Roman';"><span lang="EN-US">8~0L/min,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">当电流为</span><span style="font-family:'Times New Roman';"><span lang="EN-US">50~250A</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">时</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">氩气流量为</span><span style="font-family:'Times New Roman';"><span lang="EN-US">2~5L/min</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">。</span></span> </p> <span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">4.</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">钨极从气体喷嘴突出的长度</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">以</span><span style="font-family:'Times New Roman';"><span lang="EN-US">4~5mm</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">为佳</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">在角焊等遮蔽性差的地方是</span><span style="font-family:'Times New Roman';"><span lang="EN-US">2~3mm,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">在开槽深的地方是</span><span style="font-family:'Times New Roman';"><span lang="EN-US">5~6mm,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">喷嘴至工作的距离一般不超过</span><span style="font-family:'Times New Roman';"><span lang="EN-US">5mm</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">。</span></span> </p> <span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">5.</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">为防止焊接气孔之出现</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">焊接部位如有铁锈、油污等务必清理干净。</span></span> </p> <span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">6.</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">焊接电弧长度</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">焊接普通钢时</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">以</span><span style="font-family:'Times New Roman';"><span lang="EN-US">2~4mm</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">为佳</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">而焊接不锈钢时</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">以</span><span style="font-family:'Times New Roman';"><span lang="EN-US">~3mm</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">为佳</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">过长则保护效果不好。</span></span> </p> <span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">7.</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">对接打底时</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">为防止底层焊道的背面被氧化</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">背面也需要实施气体保护。</span></span> </p> <span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">8.</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">为使氩气很好地保护焊接熔池</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">和便于施焊操作</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">钨极中心线与焊接处工件一般应保持</span><span style="font-family:'Times New Roman';"><span lang="EN-US">80~85°</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">角</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">不锈钢焊管填充焊丝与工件表面夹角应尽可能地小</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">一般为</span><span style="font-family:'Times New Roman';"><span lang="EN-US">0°</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">左右。</span></span> </p> <span style="font-family:宋体;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span lang="EN-US"><span style="font-family:'Times New Roman';font-size:small;">9.</span></span><span style="font-size:small;"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">防风与换气。有风的地方</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">需要采取挡网来减少风力的袭击</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";">而在室内则应采取适</span><span lang="EN-US"><span style="font-family:'Times New Roman';">.</span></span></span> </p> <span style="font-family:宋体;font-size:small;"> </span>