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首頁 > 鋼管百科 > 埋弧焊鋼管焊縫殘余高度的控制

埋弧焊鋼管焊縫殘余高度的控制

日期:2020-08-11

埋弧焊管焊是對接焊。如果不控制焊縫高度和拐角半徑,那么焊趾處的應力會很大,以至于焊管仍在使用中,尤其是在腐蝕性介質(例如H2S水溶液)中。,海水,海洋大氣等,容易在焊趾處產生應力腐蝕裂紋。

埋弧焊鋼管焊縫殘余高度的控制

在成型和焊接過程中,焊管不可避免地會產生殘余應力,因此在管坯形成并焊接后,殘余應力就消除了。膨脹可以消除殘余應力,但是殘余應力難以完全消除,并且不能消除焊趾處的殘余應力。為了防止在焊趾處產生應力腐蝕裂紋,有必要控制模制和焊接過程中的殘余應力,尤其是在焊趾處的殘余應力。

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