吊挂梁是副油箱的受力件,它由铸造铝合金ZL—201浇注而成,铸件形状复杂,合金有热裂和缩松倾向,在厚薄转接处、厚大部位和冒口根部往往会出现裂纹、缩松等缺陷,需要进行焊补。为确保修补质量,我们采用钨极手工氩弧焊,其工艺是: 一、缺陷检查:通过X射线及荧光法按技术要求检查并确定缺陷的部位及长度,作出标记。二、补焊坡口的准备:用机械方法清除缺陷,对裂 The hanging beam is the force receiving component of the auxiliary tank. It is cast by the cast aluminum alloy ZL-201. The shape of the casting is complex. The alloy has the tendency of thermal cracking and shrinkage. At the thick and thin junction, thick parts and riser root tend to Cracks, shrinkage and other defects, the need for welding repair. To ensure the quality of repair, we use TIG welding, the process is: First, the defect inspection: By X-ray and fluorescent method according to technical requirements to check and determine the location and length of defects to make a mark. Second, repair welding groove preparation: mechanical methods to remove defects, cracking