久久国产福利国产秒拍

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310s不銹鋼彎頭焊接補焊方法

發布者:管理員 發布時間:2021-04-15閱讀:26次

 


310s不銹鋼彎頭焊接補焊方法

 


310s不銹鋼彎頭對裂紋進行直接補焊(主要用于≤φ89管道裂紋)。  1、做好焊接前準備工作,距離裂紋兩個端點各10mm處鉆φ6mm的止裂孔, 已防止打磨焊接過程中裂紋蔓延。然后用角磨機磨出坡口角度α=60°,間隙b=3.2mm,鈍邊p=1.5mm的坡口。310s不銹鋼彎頭坡口長度為止裂孔間的距離,并過止裂孔磨出焊縫與母材的過渡面,而將坡口兩邊的油、銹等雜物清理干凈。  2、 采用ZX7-400A焊機,310s不銹鋼彎頭直流反接,焊材為A402,φ3.2mm進行打底、填充及蓋面, 焊接電流為110A。  3、 采用滅弧焊打底,連弧焊填充及蓋面,并且單道打底,雙道填充,3道蓋面。每間 都徹底清理,每個接頭都要錯開15mm左右,確保沒缺陷。焊接方向為從左至右,焊接順序為逐層逐道由下至上。  4、 310s不銹鋼彎頭補焊后,焊縫外觀要平整且焊縫余高h≤1mm,寬度≤4mm,經做著色檢查合格打 壓正常后使用。


文章來自www.bloodthirstymelon.com


 

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久久国产福利国产秒拍
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