控制不锈钢薄板焊接变形的技术

Control technologies of welding deformation of stainless steel sheet in welding process

在核化试验设施工程中,有四个地下设备室需要敷设厚度不同的不锈钢覆面板。起初,采用常规的工艺方法对墙壁1.5 mm不锈钢覆面进行组对和焊接,焊后产生了明显的焊接变形。文中对焊接产生的龙骨架整体瓢状变形、不锈钢覆面板凹凸状波浪变形的原因进行了分析。论述了采用提高龙骨架材质刚度,使用不同厚度的垫板、施加质量较大的压铁固定等反变形措施,应用小电流快速对称焊接方法,较好地解决了焊接变形问题。通过液体渗透和射线探伤检验,满足了设计要求,保证了焊接质量。

The deformation reason of stainless steel sheet in the welding process was analyzed,the technologies to control the deformations, such as anti-deformation methods,were introduced.These technologies can be used to effectively control the welding deformations of stainless steel sheet,and to meet the requirements of design and welding quality.