摩托车挂架的凸焊

• 作 者: 韩新华
• 机 构: 洛阳407厂,
• 出 处: 焊接
• 发表日期: 1991年07期
• 关键词: 凸焊 热变形 电极头 焊接位置 小批量生产 定位销 轮廓边缘 电极结构 凸点 削边

250B摩托车上的挂架(图1),按要求垫片与外壳的内孔同心,轮廓边缘对齐,焊接要牢固,便于装配。原工艺是用内型孔定位,采用DN_2-75点焊机按图示位置点焊四点。小批量生产不久便发现了以下问题:①点焊后约有20％脱焊;④在接近焊点的内孔端面,热变形挤压金属突出,破坏内孔型面;③当采用内

250B motorcycle rack (Figure 1), according to the requirements of gaskets concentric with the inner bore of the shell, the outline of the edge alignment, welding to be solid, easy assembly. The original process is the use of inner hole positioning, the use of DN_2-75 spot welder according to the icon position spot welding four points. Shortly after mass production, the following problems were found: ① about 20% desoldering after spot welding; ④ near the end face of the inner hole of the welding spot, the hot deformation extrusion metal protrudes to destroy the inner hole profile;