An arc welding system with adjustable external magnetic field

Abstract

The invention provides an adjustable voltaic arc welding system with additional magnetic field. The welding system adopts the principle of electromagnetism. The output end of a powering device is connected with a coil, and when the power supply is turned on, a strength-controllable magnetic field is added during the welding process. Under the action of the magnetic field, the vibrating and stirring function is carried out to a smelting pool, and therefore the crystallization state of welding grains is changed, the grains are refined, and uniformity of the crystallization is improved. Crystallization crack and air hole sensitivity can be lowered, and welding quality is improved comprehensively. Luolun magnetic force can be generated for welding voltaic arc plasma to rotate the welding voltaic arc, change characteristics of the welding voltaic arc and affect shaping of the welding voltaic arc. Fastening parts such as bearings and bolts are used for fixing the additional magnetic field device to a welding gun, and therefore the whole additional magnetic field device can synchronously move with and rotate around the welding gun. Through motor driving and gear cooperating, the effect ofadditional system rotating around an axial is achieved, the rotating speed changing or variable speed rotation motion can be achieved.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to an arc welding system capable of adjusting an external magnetic field. Background technique [0002] Additive Manufacturing (AM) technology is a rapid prototyping technology based on the discrete-accumulation principle, driven by the three-dimensional data of parts, and using the method of accumulating materials layer by layer to manufacture solid parts. The biggest advantage of this forming method is that it can be formed without traditional tools, reducing the process and shortening the product manufacturing cycle. The more obvious the advantages, the broad application prospects in aerospace, biomedicine, energy chemical industry, micro-nano manufacturing and other fields. In the field of additive manufacturing, the additive manufacturing technology of metal parts using arc as a heat source has the advantages of simple equipment, high material utilization rate, and high produ...

AI Technical Summary

Problems solved by technology

The arc welding system consists of welding torch, welding wire, wire feeding mechanism, gas feeding mechanism, welding machine, workbench, and control system. Due to various welding requirements, the types and sizes of processed products are also different, and the traditional external magnetic field device can no longer meet the requirements. Therefore, it is very necessary to study the flexible adjustable external magnetic field device

Moreover, the previous research on the applied magnetic field was limited to the static magnetic field relative to the welding torch. For the rotating motion, the influence of the changing magnetic field relative to the position of the molten pool on welding has not yet been studied.

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