Weld shape control and property control system for preventing collapse of molten pool based on electromagnetic field

Abstract

The invention discloses a weld shape control and property control system for preventing the collapse of a molten pool based on an electromagnetic field. The system comprises a magnetic field power supply, a welding power supply, a first workbench and a second workbench, wherein a trolley guide rail is arranged above the first workbench, a moving trolley is arranged on the trolley guide rail, a position shifting mechanism is arranged above the moving trolley, a connecting rod is arranged at one side of a driving end of the position shifting mechanism, a pair of magnetic pole clamping devices are arranged at two sides of the lower portion of the connecting rod, a pair of first magnetic pole devices are arranged below the pair of magnetic pole clamping devices, a reverse shape control magnetic field structure is arranged at the bottom of the second workbench, and a welding plate fixing structure is arranged on the second workbench. The invention relates to the technical field of welding.The system can effectively solve the problems of thick molten pool structure and collapse in the joint welding process, the production efficiency is high, and the realization of automation is easy.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a weld shape control system based on an electromagnetic field to prevent a molten pool from sinking. Background technique [0002] In the 21st century, the research focus of researchers on materials is to improve performance, reduce cost, and reduce damage to the environment. So far, the strength level of steel materials has not fully exerted its real practical value. Compared with the theoretical strength of steel materials, it is only 1 / 6~1 / 7 times, and the performance of other materials in many fields is better than that of steel materials. It is higher than that of steel materials, which restricts the development and application of steel materials. my country has launched the "Major Basic Research of a New Generation of Iron and Steel Materials", which taps the performance potential of traditional metal materials and obtains a material with lower impurity content than tradi...

AI Technical Summary

Problems solved by technology

[0003] However, during the welding process of fine-grained steel, under the action of welding heat cycle, due to the extreme refinement of ultra-fine-grained steel grains, the driving force for grain growth is very large, and the grains in the heat-affected zone (HAZ) of the joint are seriously affected. Coarsening seriously deteriorates the overall mechanical properties of welded joints and restricts the popularization and application of fine-grained steel

Although researchers have proposed a welding method with low heat input and high energy density to solve the embrittlement and local softening phenomena in HAZ, and achieved certain results, so far, people's research on the weldability of fine-grained steel is basically limited to solving the problem of HAZ. In terms of structure and mechanical properties, there is little research on the structure, strength and toughness of weld metal

At the same time, the main disadvantage of arc welding is that the arc stability is poor during the short-circuit transition process, the molten pool is easy to rest under the action of gravity, the weld seam is poorly formed, and it is difficult to form a large effective connection area, which deteriorates the quality of the weld seam formation and affects the appearance of the workpiece. Therefore, Reliable electromagnetic field weld shape control technology is urgently needed

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