Medium-thick plate butt seam welding assembly and welding method based on ceramic arc starting liner

Abstract

A medium-thick plate butt seam welding assembly based on ceramic arc-starting gaskets, comprising two ceramic arc-starting gasket units with the same structure that can be fixed at both ends of the butt joint, and the ceramic arc-starting gasket units also include ceramic liner, a conductive liner that is close to the ceramic liner, and a ceramic stopper, the ceramic stopper is arranged at both ends of the butt joint and presses against the conductive liner, and the invention also provides a ceramic-based arc striking Butt seam welding method for plate with backing. Compared with the prior art, the present invention completely abandons the steel arc starting plate used for arc starting, arc closing and supporting the weld pool metal in the prior art when welding medium and thick plates, and eliminates the existing steel The large workload brought by the gouging operation of the high-quality arc strike plate avoids the interference of the steel arc strike plate that has not been removed in time on the welding of other parts of the weld, and at the same time improves the stability of welding quality.

Description

technical field [0001] The invention relates to the technical field of butt seam welding of medium and thick steel plates, in particular to a novel butt seam welding method of medium and thick plates and a welding assembly implementing the welding method. Background technique [0002] At present, the box structure is widely used in the field of construction machinery. In order to ensure the welding quality, the butt joints between the cover plates of the box structure are required to be located at a thickness of more than 30mm from the two ends of the weld when welding. About 8mm steel arc strike plate, to avoid defects caused by unstable starting and ending points from affecting the quality of the pair of joints. However, after the welding of this kind of steel arc strike plate is welded together with the weld seam, it needs to be cut off by gouging, and then the part should be repaired, which not only increases the amount of manual work, but also increases the leakage caus...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a medium and thick plate butt seam welding assembly based on ceramic arc striking liner, to solve the problems caused by the current welding of medium and thick plate using steel arc striking plate and gas gouging at the end of welding. The larger workload, and to avoid the interference of the steel arc strike plate that has not been removed in time on the welding of other parts of the weld, and to increase the accessibility of robot welding of box-shaped components

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