质量管理部 文件编号：LGK/ZL-04 CO2 气体保护焊 通用焊接工艺规范 编制： 审核： 批准： 质量管理部 目录 1 适用范围 ...................................................................................................................... 3 2 引用标准 ...................................................................................................................... 3 3 技术要求 ...................................................................................................................... 3 3 .1 焊前准备 ............................................................................................................... 3 3 .1 .1 焊前检查 ............................................................................................................ 3 3 .1 .2 坡口准备 ............................................................................................................. 3 3 .2 焊接材料 ................................................................................................................ 4 3 .2 .1 焊丝 ..................................................................................................................... 4 3 .2 .2 保护气体 ............................................................................................................. 4 3 .2 .3 焊接电源 ............................................................................................................. 5 3 .3 焊接参数 ................................................................................................................ 5 3 .3 .1 焊接电流 ............................................................................................................. 7 3 .3 .2 焊接电压 ............................................................................................................. 7 3 .3 .3 气体流量 ................................................................................................................
