軟管半自动环焊,是属于半自动埋弧焊中的一种。采用软管半自动环焊的专用焊把,进行机車式鍋炉螺撑的半自动焊接,是目前較先进的的焊接方法之一,在我国还是初次試用。我厂鍋炉车间电焊工孙洪輻等同志,自行设计并制造了一台較完善的螺撑軟管半自动环焊的专用焊把,可焊直徑19～41毫米的螺撑端头的环焊縫,进行了近百次的試驗,现已获得初步成功。 Hose semi-automatic welding, is a semi-automatic submerged arc welding. Semi-automatic welding with a hose semi-automatic welding torch for locomotive boiler screw semi-automatic welding, is currently one of the more advanced welding methods, is still the first trial in our country. My factory boiler workshop welders Sun Hongfu and other comrades, designed and manufactured a better self-welding torch hose semi-automatic welding torch welding diameter 19 ~ 41 mm can be welded ends of the girth weld , Carried out nearly a hundred tests, has now achieved initial success.