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Suspension type flash butt welding and medium-frequency heat treatment mechanism for steel rails

A flash butt welding and suspension technology, applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve problems such as inability to achieve heat treatment, large heat treatment head, heating coil cooling system and large intermediate frequency transformer, etc., to achieve effective isolation , to ensure toughness and avoid embrittlement

Active Publication Date: 2018-02-09
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The characteristic of this type of heat treatment machine is that the head of the heat treatment machine is relatively large, and the heating coil, clamping system, cooling system and intermediate frequency transformer are relatively large and cannot be placed in the welding machine. heat treatment

Method used

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  • Suspension type flash butt welding and medium-frequency heat treatment mechanism for steel rails
  • Suspension type flash butt welding and medium-frequency heat treatment mechanism for steel rails
  • Suspension type flash butt welding and medium-frequency heat treatment mechanism for steel rails

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] When the rail is welded, the coil lifting cylinder in the medium frequency induction heating mechanism is in an extended state, and the medium frequency heating coil and the medium frequency transformer on the coil lifting frame are at the highest position of the linear bearing track. Since the heat treatment is medium-frequency alternating current, the ferromagnetic spatter generated during welding will generate heat when the heat treatment is heated, and in serious cases will directly cause a short circuit. Therefore, welding spatter must be strictly prevented.

[0038] Fix two symmetrical upsetting shaft slag plates on the upsetting shaft of the welding machine respectively. One insulating end of the upsetting shaft slag plate is fixed on the moving frame, and the other insulating end is placed on the static frame upsetting sleeve. superior. Then place the horizontal slag retaining plate on the top of the two upsetting shaft slag retaining plates, connect with the up...

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Abstract

The invention provides a suspension type flash butt welding and medium-frequency heat treatment mechanism for steel rails. The suspension type flash butt welding and medium-frequency heat treatment mechanism comprises a medium-frequency heat treatment mechanism (1), a welding machine static frame (2), a welding machine moving frame (3) and a suspension frame (4). The suspension type flash butt welding and medium-frequency heat treatment mechanism is characterized in that the medium-frequency heat treatment mechanism (1) is fixed between the welding machine static frame (2) and the welding machine moving frame (3); and the top end of the welding machine static frame (2) and the top end of the welding machine moving frame (3) are connected and fixed through the suspension frame (4). Throughthe suspension type flash butt welding and medium-frequency heat treatment mechanism for the steel rails, flash welding of the steel rails and joint heat treatment in the locked state are completed ata time, two procedures are combined into one, and the working hours are shortened at least one time for site operation. Through invention of a heat treatment slag stopping mechanism, effective isolation of welding spattering during welding of the steel rails from the heat treatment mechanism is realized.

Description

technical field [0001] The invention relates to the field of rail welding in the railway industry, in particular to a suspended rail flash butt welding intermediate frequency heat treatment mechanism. Background technique [0002] After flash butt welding of rails, the local area of ​​the joint is affected by high temperature heating, and the grains are severely coarsened, which leads to a significant decrease in the toughness and plasticity of the metal. Through heat treatment of the joints, the grains are refined, and the impact toughness and elongation can be doubled. above. On the other hand, heating the heat treatment of the joint and then air cooling may cause a decrease in hardness and a large area of ​​softening in the overheated area, which will lead to low collapse during the use of the joint. For this reason, a rapid cooling method in a specific area is designed to obtain a good rail head. The hardness matches the base metal, and the overall quality of the joint c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/04C21D1/42
CPCC21D1/42C21D9/04Y02P10/25
Inventor 丁韦杨国涛宋宏图高振坤李力赵国彭鹏李金华胡玉堂张琪
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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