HG785D薄壁槽形件对扣焊接工艺

摘要

The hinged welding technology of HG785D thin-walled grooved parts is researched and tested.A reasonable set of welding procedure specification for HG785D sheet welding is analyzed and summarized.And it can reduce the complex and multiple deformations of thin-walled parts to achieve single-sided welding double-sided forming,and also can effectively solve the technical problems in thin-walled beam welding to ensure the one-time qualified rate of radiographic inspection for welds.And the mechanical property of welds is tested.%研究HG785D薄壁槽形件对扣焊接工艺,分析总结出一套关于HG785D薄板焊接的较为合理的焊接工艺规范,可减小薄壁件焊接存在的复杂、多元变形,达到单面焊接双面成型.有效地解决了薄壁梁焊接存在的技术难题,保证焊缝射线探伤一次检验合格.对焊缝进行力学性能试验.结果表明焊缝的强度、冲击功均超过基材,强度达到Ⅰ级要求.焊接工艺经多次检验效果良好,为低合金高强钢薄板焊接提供了技术支持.