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二氧化碳气体保护焊,具有生产效率高、成本低、可清楚地观察整个焊接过程等优点,因此,目前各工业部门正在逐步扩大其应用范围。我厂在应用细丝二氧化碳气体保护焊时(设备为自制三相桥式硅整流有级调压焊机,焊丝为H08Mn2SiA,直径0.6～0.9毫米,被焊材料为30CrMnSiA钢板,厚度小于3毫米),发现焊缝中存在大量气孔,严重影响焊接质量。经过不断试验、改进,现在气孔问题已基本解决。下面重点谈谈气孔的产生与预防。
Carbon dioxide gas shielded welding, with high production efficiency, low cost, can clearly observe the entire welding process and other advantages, therefore, the current industrial sector is gradually expanding its scope of application. I plant in the application of carbon dioxide gas shielded welding (equipment for the homemade three-phase bridge rectifier step-pressure welding machine, wire H08Mn2SiA, diameter 0.6 ~ 0.9 mm, the welding material is 30CrMnSiA steel, the thickness of less than 3 mm) , Found that there are a large number of pores in the weld, seriously affecting the quality of welding. After continuous testing and improvement, the issue of stomatal problems has been basically solved. The following focuses on the production and prevention of stomatal problems.