不銹鋼管路環縫內保護裝置及焊接工藝
在施工(gong)現場安(an)裝(zhuang)(zhuang)過程中(zhong)經常遇(yu)到許多不銹(xiu)鋼管(guan)(guan)(guan)(壁厚(hou)大于(yu)或等于(yu)2.0mm)需要拼接(jie),只好在現場進(jin)行裝(zhuang)(zhuang)配(pei)焊接(jie)。為了(le)保(bao)證管(guan)(guan)(guan)內焊縫不被氧化,管(guan)(guan)(guan)內要通(tong)保(bao)護氣體(ti)(氬(ya)(ya)氣),故需要一套充氬(ya)(ya)裝(zhuang)(zhuang)置,如圖4-50所(suo)示。兩堵(du)板之間的距離約為200mm,中(zhong)間用(yong)一根(gen)鍍(du)鋅鋼管(guan)(guan)(guan)串通(tong)作為通(tong)入保(bao)護氣體(ti)的管(guan)(guan)(guan)...