As the most important stressed part of the equipment, the welding quality of the excavator boom is directly related to the overall quality and performance of the excavator. After welding, the excavator boom also needs to carry out a series of processing, such as boring the inner hole, milling the end face, processing the assembly hole of the bucket rod and oil cylinder, and the processing of these parts has high requirements for accuracy. Once there is a problem in welding, it is likely that other components cannot be installed, resulting in product scrapping and direct economic losses. Therefore, the welding process of excavator boom is very important. However, welding deformation and welding cracks are easy to occur in the welding process of excavator boom. This article will roughly introduce the auxiliary technology to prevent welding deformation of excavator boom.
1. Reverse deformation welding technology
The reverse deformation method is to apply a certain reverse force to the deformation direction to offset its deformation stress. When using the reverse deformation method, it is necessary to give priority to calculate the shrinkage in the welding process, so as to calculate the external reverse deformation as needed, so as to offset each other and minimize the deformation error. The main factors affecting the longitudinal deformation of welding are the length and cross-sectional area of welding parts.
2. Welding robot is adopted
As a popular technology in recent years, welding robot is widely used in the field of construction machinery. Because the welding robot is completely controlled by program and implements a unified operation sequence in the welding process, its welding quality can be consistent, and there will be no different product quality due to human factors.
3. Laser welding technology
Laser welding focuses the laser beam together, aims at the welding site, and melts the welding site of welding materials through huge energy. The stiffness after welding is significantly improved. At present, laser welding is mainly applied to the welding of unequal thickness plate frame around the boom. During laser welding, the temperature is high and the melting speed is fast, so that the welding speed is fast and the welding deformation ability is small.
