实践证明,可采用结507焊条随机焊补柴油机机身外壳水冷壁处的裂纹和穿孔,焊补简单,不需拆装,修复成本低,效果良好。现将焊接工艺介绍如下: 1.仔细找出裂纹和穿孔的部位。在裂纹两端各钻直径为3～5毫米的止裂孔(见图1);若是穿孔则用三角刮刀铰除孔内锈污。 Practice has proved that the junction can be used 507 welding rod welding at random fuselage shell water wall cracks and perforation, welding repair simple, without disassembly, repair low cost, good effect. Now the welding process is as follows: 1. Carefully identify the cracks and perforation of the site. In the cracks at both ends of the drilling diameter of 3 to 5 mm crack-proof hole (see Figure 1); if the perforation is the use of triangular scraper hinges hole rust rust.