Cracks in the tank engine housing are a common defect. Defects in the metal internal structure, stress concentration, fatigue, and the action of protruding external forces often cause cracks in different parts of the engine body housing. If welding is used to solve such problems, there are disadvantages such as brittleness, deformation, and strength reduction of the material, while also consuming electric energy and equipment. However, using special bonding technology to deal with such cracks can achieve fast, good, and economical effects.