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對焊法蘭圓環的對接焊縫應進行焊後熱處理

發布時間:17-02-24  關注次數:


對焊法蘭圓環的對接焊縫應進行焊後熱處理

能繞與其配合的管子作360度旋轉的可調對焊法蘭,它是由短管和法蘭組成,首先將短管與法蘭配合(短管的外圓與法蘭內孔配合),然後短管的A處坡口與相同規格的管件組對焊接,當短管與其相同規格的管件組對焊接完成後由於短管與法蘭是間隙配合所以法蘭可繞短管作360度轉動,以達到法蘭與其他法蘭容易對接的目的。
 

 

 

對焊法蘭應沿鋼材軋製方向切割成條狀,經彎製對焊成圓環,並使鋼材的表麵形成環的柱麵。不得采用鋼板直接機加工成帶頸對焊法蘭,圓環的對接焊縫應進行焊後熱處理,並作100%射線或超聲波探傷,且射線探傷符合JB4730的II級要求,超聲波探傷符合 JB4730的I級要求。