【摘要】 介绍甲醇合成塔双相不锈钢反应管与管板的自动焊接工艺。针对焊接过程中母材的相变及熔合特性，采用瑞典ＳＡＮＤＶＩＫ公司的自动焊丝２２．８．３Ｌ，通过焊接工艺评定试验，确定了焊接工艺参数，并提出了防止焊接缺陷、保证熔合性的技术措施。在大庆油田天然气化工厂甲醇合成塔的施工中取得良好的效果，９４２０条焊缝经氨渗透法检验一次合格率为９９．８％。更多还原

【Abstract】 The automatic automatic welding dual - phase stainless steel reaction tube and tube sheet on methanol converter is introduced. In vies of phase change and fusion properties during welding, welding wire from Swedish SANDVIK company was used. Welding parameters was established and technical measures preventing weld defects and assuring fusion were proposed through welding procedure qualification tests. The welding Process has been used with good results in the construction of methanol converter in Daqing Natural Gas Chemical Plant. The welds using 9420 electrode inspected by ammonia penetrant teat boasted a 0.2％ repair rate.更多还原