Multi-wire bead welding system and process thereof

Abstract

The invention discloses a multi-wire (solid or flux-cored) bead welding system adopting an inert gas protection or submerged arc method, and a process of the multi-wire bead welding system. The multi-wire bead welding system and the process of the multi-wire bead welding system are used for replacing surfacing with band-electrode to obtainer higher production efficiency. The multi-wire bead welding system comprises a welding gun swing mechanism (11), a multi-wire welding gun (6), a wire-feeding pipe (4) and at least two wire-feeding machines (5). Compared with traditional bead welding, the multi-wire bead welding is higher in deposition rate. Due to the fact that a lap joint area of multi-wire bead welding is soother than that of traditional bead welding, the machining time needed to obtain a smooth surface is largely shortened. A machine head of the multi-wire bead welding system can swing in the welding process, the fusion ratio between bead welding materials and wood is improved while a wider weld joint is obtained, and the unique swing function can guarantee a bead welding layer to be more uniform.

Description

technical field [0001] The invention relates to the field of metal welding and is used for high-efficiency and high-quality surfacing welding, in particular to a multi-wire surfacing welding system and its technology. Background technique [0002] The surfacing welding process is an important branch in the welding field. The commonly used surfacing welding methods include: strip surfacing welding, traditional submerged arc surfacing welding, solid core or flux core melting electrode gas shielded surfacing welding, plasma arc surfacing welding, etc. [0003] Because of the use of rectangular cross-section steel strips for strip surfacing welding, relevant steel strips cannot be purchased in the market when performing some special alloy surfacing welding; the cost of steel strips is higher than that of GMAW welding wire; the transportation of steel strips requires special conveyor belts. The wire mechanism is difficult to maintain when there is a fault; when the steel strip is...

AI Technical Summary

Problems solved by technology

[0003] Because of the use of rectangular cross-section steel strips for strip surfacing welding, relevant steel strips cannot be purchased in the market when performing some special alloy surfacing welding; the cost of steel strips is higher than that of GMAW welding wire; the transportation of steel strips requires special conveyor belts. Wire mechanism, it is difficult to maintain when there is a fault; when the steel strip is wide, it is necessary to have a magnetic pole to eliminate the influence of magnetic deflection blow on the weld bead

[0004] Traditional submerged arc welding, solid core or flux-cored gas-shielded surfacing welding, with large penetration depth and high dilution rate, requires more weld layers to achieve the required alloy content; the width of the weld bead is narrow and the productivity is low

[0005] Plasma arc surfacing equipment is expensive; the process is dangerous and eye protection is a must

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