CO_2+O_2混合气体保护焊冷焊铸铁

• 作 者: 张士相
• 机 构: 北京市政机械公司修理厂,
• 出 处: 焊接通讯
• 发表日期: 1982年03期
• 关键词: 铸铁件 CO_2+O_2 混合气体保护焊 焊缝成形 可焊性 电弧电压 伸出长度 白口组织 热焊 坡口角度

铸铁是一种可焊性较差的材料,为寻找理想的焊接铸铁工艺,过去曾采用CO_2气体保护焊冷焊法,但这种工艺焊成的焊缝表面堆高大,焊缝成形不理想,有时还产生气孔。而传统的焊接铸铁工艺方法,如气焊法、电弧冷焊法虽然能够焊补铸铁,但由于被焊铸铁的材质不同、使用场合不同和焊补部位不同,所以都有不同程

Cast iron is a kind of poor weldability material. In order to find the ideal welding cast iron process, CO_2 gas shielded welding cold welding has been used in the past. However, the surface of the welding seam welded by this process is tall and the weld formation is not ideal. Sometimes also produce stomatal. The traditional welding cast iron process, such as gas welding, arc welding cold welding although the law can be cast iron, but due to the different materials are cast iron, the use of different occasions and welding repair parts are different, so have different range