Induction normalizing system for site welding of steel rails

Abstract

The invention relates to an induction normalizing system for the site welding of steel rails, and relates to the field of the heat treatment of the steel rails. The induction normalizing system comprises an induction heating system and a magnetic conduction system, wherein the induction heating system comprises a magnetic field generating device; the magnetic field generating device comprises two magnetic poles; the magnetic conduction system comprises a first soft magnet module and a second soft magnet module; the right end of the first soft magnet module is provided with a first modular structure; the left end of the second soft magnet module is provided with a second modular structure; the first modular structure and the second modular structure form a cavity through which the steel rails pass; and the first soft magnet module is movably connected with the second soft magnet module. In order to bring about convenient for the site welding, the induction heating technology can be applied to the site welding. Metal crystalline phases at weld joints in the site welding are close to those at the periphery, steel materials are prevented from being carbonized, the normalizing treatment can be performed inside the weld joints, and thus, the quality and service life of the steel rails are ensured.

Description

Technical field: [0001] The invention relates to the field of heat treatment, in particular to the field of rail normalizing treatment. Background technique: [0002] With the improvement of people's quality of life and the requirement of increasing the speed of railways, seamless welding technology is generally used for railway rails, subway rails and other rails. [0003] Rail welding is generally divided into factory welding (factory welding) and on-site welding (on-site welding). The factory welding process is because welding is carried out in the factory, and there are many equipments that can be used, so the welding process is relatively mature. On-site welding requires welding and heat treatment during the rail laying process. There are relatively few equipment that can be used, and the laid rails cannot be extended into the existing induction heaters, and cannot be heat treated by induction heating. [0004] The normalizing process in the current on-site welding pr...

AI Technical Summary

Problems solved by technology

On-site welding requires welding and heat treatment during the rail laying process, and relatively few equipment can be used, and the laid rails cannot be extended into the existing induction heaters, and cannot be heat treated by induction heating

[0004] The normalizing process in the current on-site welding process often cannot ensure that the metal crystal phase of the metal at the weld is similar to that of the surrounding metal, and the metal composition will also be changed during the normalizing process, such as causing decarburization of the steel.

Furthermore, these normalizing processes cannot go deep into the inside of the rail to achieve normalizing, which in turn affects the quality of the rail

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