久久国产福利国产秒拍

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310s不銹鋼管
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310s不銹鋼板焊接注意事項介紹

發布者:管理員 發布時間:2021-03-26閱讀:39次


310s不銹鋼板焊接注意事項介紹

310s不銹鋼板整個焊接過程盡量連續焊完,中斷時應用石棉被包好緩冷。310s不銹鋼板采用多層焊接,中間層溫度不應低于預熱溫度。

310s不銹鋼板后X射線檢測一定要在24h以后進行。

310s不銹鋼板具有再熱裂紋傾向,為了防止熱處理過程中的再熱裂紋漏檢,建議無損探傷在熱處理后進行,否則熱處理后應進行30%的探傷抽查。

310s不銹鋼板焊接過程中,如焊縫需返修,對碳弧氣刨后的淬硬層必須徹底打磨凈,并進行著色檢查,確認缺陷徹底清除后方可進行補焊。返修時熱溫度為350℃,其他工藝措施與正常焊接相同,310s不銹鋼板只有做到上述這些基本要求,才能焊出滿意的耐熱管道焊縫。

 

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久久国产福利国产秒拍
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