Argon arc welding machine lower electrode

Abstract

The invention relates to a lower electrode structure of electrical arc welding, in particular to an argon arc welding machine lower electrode which is provided with a plurality of working faces. A molten pool groove is formed in the plane of each working face. The molten pool grooves of the upper working faces are used for carrying out welding operation, and the argon arc welding machine lower electrode is fixed on a lifting base through the lower working faces. When a molten pool groove of a working face is broken, the lower electrode rotates to another working face for welding operation. The molten pool grooves are of a non-nozzle integrated shallow groove structure, the lower electrode is provided with a protecting cooling gas channel which is a large-flow thin-wall through hole, a cooling structure of a lower electrode body is formed, and the section contour of the lower electrode is a square with four working faces or a multi-side wedge shape or a regular hexagon with six working faces. According to the lower electrode, material using rate is improved, operation cost is lowered, under the premise that quality is guaranteed, slag planing processing is removed, arranging and maintaining cost of a slag planing machine is saved, slag planing secondary quality pollution is avoided, the problem of welding nozzle wire blocking is solved, and welding nozzle replacing cost is lowered.

Description

technical field [0001] The invention relates to a lower electrode structure for arc welding, in particular to a lower electrode of an argon arc welding machine used for a stainless steel leader unit. Background technique [0002] The argon arc welding machine is usually used for the welding of stainless steel strips, and the stainless steel leader unit is used for welding the leaders and then delivered to the next process for rolling. The requirements for the weld seam and the surface quality of the strip are particularly high, and the usual configuration is a welding machine Add slag planer, that is, to carry out slag processing on the weld seam after welding, so as to ensure the quality of the weld seam on the one hand, and plan the weld seam flat on the other hand, so as not to affect the coiling. [0003] At present, the conventional process configuration is in the form of a welding machine plus a slag planer. The lower electrode of the existing argon arc welding machine...

AI Technical Summary

Problems solved by technology

[0004] The Chinese invention patent "Seam Welding Machine Electrode" (invention patent number: ZL200810028360.7 authorized announcement number: CN101386108B) discloses the structure of a seam welding machine electrode, but the invention does not involve the structure of the lower electrode of the argon arc welding machine

Chinese invention patent application "Roller Welding Machine Lower Electrode Device" (invention patent application number: 201210236127.4 publication number: CN102728942A) discloses a lower electrode device for a sear welder, but the technical solution of this invention is also not suitable for stainless steel leader belts TIG welding machine for the unit

None of the above-mentioned existing technical solutions can be used to solve the technical problems existing in the lower electrode of the existing argon arc welding machine

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