管板自動焊機現(xian)(xian)(xian)場(chang)鈦管(guan)(guan)焊(han)(han)(han)(han)前準備：管(guan)(guan)道主(zhu)要焊(han)(han)(han)(han)接(jie)接(jie)頭、坡(po)(po)口(kou)尺寸、形式(shi)及(ji)焊(han)(han)(han)(han)道分布(bu)，管(guan)(guan)板(ban)自動焊(han)(han)(han)(han)機(ji)現(xian)(xian)(xian)場(chang)鈦管(guan)(guan)焊(han)(han)(han)(han)前清理，坡(po)(po)口(kou)及(ji)兩(liang)側各50以內的內外表面(mian)清除油(you)污后(hou)，應(ying)(ying)用奧氏體(ti)不銹鋼絲(si)刷、絞刀等機(ji)械方法清除其(qi)氧化膜、毛刺和表面(mian)缺(que)(que)陷(xian)。經機(ji)械清理后(hou)坡(po)(po)口(kou)的表面(mian)填充焊(han)(han)(han)(han)絲(si)，焊(han)(han)(han)(han)接(jie)前使用不含硫的丙酮或乙醇進行脫脂處理。焊(han)(han)(han)(han)絲(si)如(ru)被污染、氧化變(bian)(bian)色(se)時,污染部分應(ying)(ying)予切除。管(guan)(guan)子或管(guan)(guan)件組(zu)對時應(ying)(ying)做(zuo)到內壁齊平，對口(kou)錯邊(bian)量不應(ying)(ying)超(chao)過壁厚(hou)的10%。定(ding)(ding)位(wei)(wei)焊(han)(han)(han)(han)應(ying)(ying)采用與正式(shi)焊(han)(han)(han)(han)接(jie)相(xiang)同的焊(han)(han)(han)(han)接(jie)材料(liao)及(ji)焊(han)(han)(han)(han)接(jie)工藝,定(ding)(ding)位(wei)(wei)焊(han)(han)(han)(han)縫長度一般(ban)為5mm-10mm，高度不超(chao)過壁厚(hou)的2/3。定(ding)(ding)位(wei)(wei)焊(han)(han)(han)(han)縫不得有(you)裂(lie)紋(wen)、氣孔、夾污及(ji)氧化變(bian)(bian)色(se)等缺(que)(que)陷(xian)，發(fa)現(xian)(xian)(xian)缺(que)(que)陷(xian)應(ying)(ying)及(ji)時清除。