Self-seam-filling repairing method for bent position of metal plate

Abstract

The invention discloses a self-seam-filling repairing method for the bent position of a metal plate, and belongs to the field of metal plate bending. According to the self-seam-filling repairing method for the bent position of the metal plate, seam-filling metal powder is sprayed on the inner wall and the outer wall of the bent position of the metal plate in batches, the seam-filling metal powdercan be effectively guided to permeate into a micro-crack in cooperation with a soft magnetic strip, then fixed-point micro-melting is carried out on the bent position, and the effect of repairing thecrack under the condition that the position of the crack does not need to be determined can be achieved. Compared with the prior art, the repairing efficiency of the crack is remarkably improved, meanwhile, under the action of a dispersion inner convergence suction cover, on one hand, the sprayed seam-filling metal powder can be effectively isolated from the external space, meanwhile, after spraying, static extending fluff extends outwards and is erected, the seam-filling metal powder can be attracted and assisted to get close to a semi-shaped suction strip and be adsorbed, the diffused seam-filling metal powder is recycled, and the waste of the seam-filling metal powder is reduced; and on the other hand, workers are effectively protected against inhaling the seam-filling metal powder, andthen the influence of the seam-filling metal powder on the health of the workers is effectively reduced.

Description

technical field [0001] The invention relates to the field of bending of metal plates, and more specifically relates to a method for self-sealing and repairing of bending parts of metal plates. Background technique [0002] Bending——The metal sheet first undergoes elastic deformation under the pressure of the upper or lower die of the bending machine, and then enters plastic deformation. In the initial stage of plastic bending, the sheet is free to bend. With the upper die or When the lower mold exerts pressure on the sheet, the sheet and the inner surface of the V-groove of the lower mold gradually get closer, and at the same time, the radius of curvature and the bending arm also gradually become smaller. Continue to pressurize until the stroke ends, so that the upper and lower molds and the sheet are in three-point contact. Tight full contact, at this time to complete a V-shaped bend, which is commonly known as bending. Generally, the bending process is performed by a bend...

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Problems solved by technology

[0003] When the metal plate is bent, due to the stretching or extrusion of the bending place, the bent metal plate is prone to cracks at the stressed bending place, resulting in a decrease in the overall strength of the metal plate and a shortened service life. Therefore, it is generally necessary to carry out certain treatment on the bent part of the bent metal plate. However, the cracks are small and difficult to find, resulting in low repair efficiency, and it is difficult to find and detect them all, resulting in the bent part still existing after treatment. Not strong enough

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