A drawing type inertial friction welding method and device

Abstract

The invention belongs to the technical field of inertial friction welding, and particularly relates to a drawing type inertial friction welding method and device. The drawing type inertial friction welding method and device are suitable for welding of plates and bars and repairing of point-shaped defects. According to the technical scheme of the drawing type inertial friction welding method and device, a solid phase welding technology is adopted, base metal melting is not required, defects such as cracks and pores generated by fusion welding do not occur, the heat-affected zone of a joint is narrow, residual stress of repairing of a welding seam is low, welding deformation is small, and comprehensive performance of the joint is high; meanwhile, mechanical properties, the fatigue strength,the fracture toughness and the joint plasticity of the welding seam can further be improved; meanwhile, by adopting thinking of inertial friction welding, energy required by welding is provided by a main shaft and an inertia welding flywheel, welding heat input quantity is stable and consistent, and control parameters of a welding technology are less so that precise control of the parameters can be realized; therefore, the welding process is stable and reliable, stability of quality of the welding joint is good; and the mechanical principle of the device is simple, the energy utilization rateis high, and the welding process does not produce smoke, so that the green and environmentally friendly effects are achieved.

Description

technical field [0001] The invention belongs to the technical field of inertial friction welding, is applicable to the welding of plates and bars and the repair of spot defects, and in particular relates to a drawing type inertial friction welding method and device. Background technique [0002] The weld seam of the tank of the new generation space launch vehicle is welded by friction stir welding solid phase welding technology, and welding defects are inevitable. At present, friction stir welding defects are mostly repaired by conventional fusion welding process. Fusion welding repair welding generally requires multiple grinding and filling, and it is very easy to produce fusion welding defects such as pores and cracks, which increases the deformation of the weldment and significantly reduces the joint. The strength of the offset friction stir welded joint strength coefficient. Therefore, a high-quality solid-phase repair welding process must be used to effectively ensure ...

AI Technical Summary

Problems solved by technology

Upsetting friction plug repair welding has the characteristics of simple process control, easy realization, and good joint performance, but it requires a rigid back support

Applied to the repair of welding defects in storage tanks, it requires a huge rigid back support, which is difficult to manufacture and process, and is inconvenient to use

[0005] The drawing-forging friction plug repair welding technology is a repair welding concept proposed on the basis of continuous friction welding. This technology does not require a huge rigid back support, but the process parameters are complex, the welding quality is poor in stability and repeatability, and the process control is relatively Complicated, this technology has only been researched in laboratories in China and has not been applied to actual products

Images