管板自動焊機現場鈦管(guan)(guan)焊(han)(han)(han)(han)(han)(han)前(qian)(qian)準備(bei)：管(guan)(guan)道(dao)主要焊(han)(han)(han)(han)(han)(han)接接頭、坡(po)口(kou)(kou)尺寸(cun)、形式及焊(han)(han)(han)(han)(han)(han)道(dao)分(fen)(fen)布，管(guan)(guan)板自動焊(han)(han)(han)(han)(han)(han)機(ji)(ji)現場鈦管(guan)(guan)焊(han)(han)(han)(han)(han)(han)前(qian)(qian)清(qing)理(li)，坡(po)口(kou)(kou)及兩側各(ge)50以內的內外表面(mian)清(qing)除油污后(hou)，應(ying)用(yong)奧氏體不(bu)(bu)銹鋼絲刷(shua)、絞刀(dao)等(deng)機(ji)(ji)械(xie)方法清(qing)除其氧化膜、毛刺和表面(mian)缺(que)(que)陷(xian)(xian)。經機(ji)(ji)械(xie)清(qing)理(li)后(hou)坡(po)口(kou)(kou)的表面(mian)填(tian)充焊(han)(han)(han)(han)(han)(han)絲，焊(han)(han)(han)(han)(han)(han)接前(qian)(qian)使(shi)用(yong)不(bu)(bu)含硫的丙酮(tong)或(huo)乙醇進(jin)行脫(tuo)脂處理(li)。焊(han)(han)(han)(han)(han)(han)絲如被(bei)污染、氧化變色時(shi),污染部分(fen)(fen)應(ying)予切(qie)除。管(guan)(guan)子或(huo)管(guan)(guan)件組對(dui)時(shi)應(ying)做到內壁(bi)齊平(ping)，對(dui)口(kou)(kou)錯邊(bian)量(liang)不(bu)(bu)應(ying)超過(guo)壁(bi)厚(hou)的10%。定(ding)位焊(han)(han)(han)(han)(han)(han)應(ying)采用(yong)與正式焊(han)(han)(han)(han)(han)(han)接相同的焊(han)(han)(han)(han)(han)(han)接材(cai)料(liao)及焊(han)(han)(han)(han)(han)(han)接工藝,定(ding)位焊(han)(han)(han)(han)(han)(han)縫長度(du)一般為5mm-10mm，高度(du)不(bu)(bu)超過(guo)壁(bi)厚(hou)的2/3。定(ding)位焊(han)(han)(han)(han)(han)(han)縫不(bu)(bu)得有(you)裂紋、氣孔、夾污及氧化變色等(deng)缺(que)(que)陷(xian)(xian)，發現缺(que)(que)陷(xian)(xian)應(ying)及時(shi)清(qing)除。