用于焊接低碳钢钢管的氩弧焊丝研制

低碳钢钢管焊接 ,常用 CO2 气保焊丝 H0 8Mn2 Si A代替 ,此焊丝含 Mn量太高 ,碳当量超标 (>0 .43% ) ,焊缝机械强度高 ,硬度大 ,裂纹敏感系数大 ,根据要求常采用日本的 TGS— 50焊丝焊接。新研制出的 TIG— LD低碳钢专用氩弧焊丝 ,从焊丝的化学成分、生产工艺、焊缝机械性能、可焊性等方面与日本的 TGS— 50焊丝进行了分析比较 ,认为该焊丝具有优良的焊接性能 ,化学成分设计合理 ,熔敷金属的机械性能和耐蚀性能均达到国外同类产品水平

Research and Development of argon Arc Weld Wire for Low Carbon Welded Pipe

For the low carbon steel pipe welding , it always adopt CO 2 shield welding wire H08Mn2SiA , this kind of the welding wire contains high Mn element, and the C.E. exceed the standard.(>0.43%), the mechanical stress and hardness of weld seam are high , the crack sensitivity coefficient is high., in accordance with the requirements, it is always adopt the TGS-50 weld wire for welding. The new developed TIG-LD argon Arc Weld Wire for low carbon steel, compared with the Japanese TGS-50 weld wire from chemical composition , production process, weld seam mechanical properties and weldability, this kind of weld wire has the advantage of excelled welding performance, reasonable chemical composition design, the mechanical properties and anti-corrosion capability of the fusion metal are all meet the same kind of product level abroad.