Tube electrode electroslag welding mould device applicable to steel rails

Abstract

The invention provides a tube electrode electroslag welding mould device applicable to steel rails. The tube electrode electroslag welding mould device comprises a mould fixing assembly (1), a mould assembly (2) and a cooling circulation assembly (3), and is characterized in that the mould fixing assembly (1) is fixed on a rail head of a to-be-welded steel rail (4); the mould assembly (2) is arranged on the middle part of the mould fixing assembly (1); and the cooling circulation assembly (3) is arranged in the mould assembly (2). The equipment is mainly a copper mould which is approximate toan I-steel shape, can be opened and closed simply and conveniently, can be used repeatedly, is convenient to assemble and fix and can realize water circular cooling; one-step continuous welding moulding of a steel rail whole section can be realized; the tube electrode electroslag welding mould device can be used for high-speed railways, interurban railways, subways, workshop gantry crane rails andthe like; the tube electrode electroslag welding mould device can be used flexibly; production cost is lowered; and working efficiency is improved.

Description

technical field [0001] The invention relates to the field of rail welding, in particular to a pipe electrode electroslag welding mold device suitable for rails. Background technique [0002] Electroslag welding has fast speed and high efficiency. The cooling speed of the weld seam is faster than that of aluminothermic welding and slower than that of arc welding, and the quality of the weld seam is easier to control. Electroslag welding is usually carried out when the weldment is in a vertical position. The slag pool not only needs sufficient depth, but also needs a certain volume. It is more suitable for the large-section welding of rails, but the rail feet of the rails are thinner and wider. It is the difficult position of electroslag welding. [0003] The key to rail electroslag welding mainly includes three parts: welding mold, welding material and welding process. The design of the welding mold needs to consider several aspects: mold material, cross-sectional shape of ...

AI Technical Summary

Problems solved by technology

When using multi-wire welding and electroslag welding, the wire feeding over a certain distance is prone to position deviation. If the feeding speed is not well controlled, the welding wire will catch fire with other positions on the end face of the rail, and it is difficult to ensure that it will always be in an arc-free state later.

The transition part between the rail head and the rail bottom in the shape of the weld seam occupies a large space, which is difficult to polish and is not convenient for seamless line construction

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