以母材厚度为10mm的Q235-A,试件规格为300mm×125mm钢板立焊为例,对单面焊双面成形操作技术要点分析:一、试板清理焊前必须用磨光机将坡口正反两侧20mm范围内的油污、铁锈等清理干净,使之呈现金属光泽,否则必将产生焊接缺陷,并将所需钝边1～1.5mm锉好。 Taking Q235-A with a base metal thickness of 10mm as an example, the specification of a 300mm × 125mm steel plate is taken as an example to analyze the technical operation of the double-sided forming operation of a single-sided welding: First, the test plate must be polished with a polisher Oral positive and negative sides of 20mm range of oil, rust and other clean up, so that the metal luster, otherwise it will produce welding defects, and the required blunt edge 1 ~ 1.5mm file well.