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Steel rail heat treatment device and heat treatment method

A heat treatment device and rail technology, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve the problems of complicated operation and complex structure, and achieve the effects of convenient use, reasonable structure and suitable cooling speed.

Active Publication Date: 2017-09-05
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current rail air spray or spray cooling device has complex structure and cumbersome operation

Method used

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  • Steel rail heat treatment device and heat treatment method
  • Steel rail heat treatment device and heat treatment method
  • Steel rail heat treatment device and heat treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0040] The second embodiment is different from the first embodiment: the diameter of the high-temperature atomizing nozzle 21 is 3mm, the aperture of the nozzle in the first nozzle 16 is 8mm, the distance between adjacent nozzles is 20mm, and the nozzles of the first nozzle 16 of the upper and lower air boxes The distance from the surface of the rail 19 is 30 mm, and the vertical distance between the center line of the nozzles of the first nozzles 16 of the left and right wind boxes and the rail head plane is 10 mm.

[0041] Turn on the air compressor 2, and adjust the main control valve 4 and the sub-control valve 10 to control the wind pressure of the stabilized wind box 5 to 25KPa, the wind pressure in the left and right wind boxes to 15KPa, the wind pressure in the upper wind box 12 to 16KPa, and the lower wind box 14 The pressure is 15KPa, and the air compressor 2 is turned off. Use mechanical clamps to place the rail 19 in austenite state on the stage 18, after air cooling ...

Embodiment 3

[0042] Embodiment 3 is different from Embodiment 1: the diameter of the high-temperature atomization nozzle 21 is 1.5mm, the aperture of the nozzle in the first nozzle 16 is 5mm, the distance between adjacent nozzles is 15mm, and the diameter of the first nozzle 16 of the upper and lower air boxes The distance between the nozzle and the surface of the rail 19 is 40 mm, and the vertical distance between the center line of the nozzle of the first nozzle 16 of the left and right wind boxes and the rail head plane is 12 mm.

[0043] Turn on the air compressor 2, by adjusting the main control valve 4 and the sub-control valve 10, the wind pressure of the stabilized wind box 5 is controlled to 40KPa, the wind pressure in the left and right wind boxes is 25KPa, the wind pressure in the upper wind box 12 is 30KPa, and the wind pressure in the lower wind box 14. The pressure is 20KPa, and the air compressor 2 is turned off. Use mechanical clamps to place the rail 19 in austenite state on ...

Embodiment 4

[0044] Embodiment 4 is different from embodiment 1: the diameter of the high-temperature atomizing nozzle 21 is 2mm, the aperture of the nozzle in the first nozzle 16 is 7mm, the distance between adjacent nozzles is 30mm, and the nozzles of the first nozzle 16 of the upper and lower air boxes The distance from the surface of the rail 19 is 20 mm, and the vertical distance between the center line of the nozzles of the first nozzles 16 of the left and right wind boxes and the rail head plane is 13 mm.

[0045] Turn on the air compressor 2, by adjusting the main control valve 4 and the sub-control valve 10, the wind pressure of the stabilized wind box 5 is controlled to 40KPa, the wind pressure in the left and right wind boxes is 30KPa, the wind pressure in the upper wind box 12 is 25KPa, and the wind pressure in the lower wind box 14. The pressure is 25KPa, and the air compressor 2 is turned off. Use mechanical clamps to place the rail 19 in austenite state on the loading table 18....

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Abstract

The invention discloses a steel rail heat treatment device. The steel rail heat treatment device comprises a heat treatment mechanism, a water supply mechanism, a gas supply mechanism, a main frame and a steel rail holding mechanism for holding a steel rail. The heat treatment mechanism comprises a pressure-stabilized air bellow, the pressure-stabilized air bellow is connected with an upper air bellow, a lower air bellow, a left air bellow and a right air bellow through a small vent pipe correspondingly, and first nozzles are arranged on the upper air bellow, the lower air bellow, the left air bellow and the right air bellow correspondingly; the first nozzle of the upper air bellow is arranged over the steel rail, the first nozzle of the lower air bellow is arranged under the steel rail, and the central axes of the first nozzle of the upper air bellow and the first nozzle of the lower air bellow coincide with the central axis of the steel rail; the first nozzle of the left air bellow and the first nozzle of the right air bellow are symmetrically arranged on the two sides of the steel rail; the water supply mechanism and the gas supply mechanism are connected with the pressure-stabilized air bellow correspondingly, and the steel rail holding mechanism is arranged in the main frame. The invention further provides a steel rail heat treatment method. The steel rail heat treatment device and the heat treatment method are easy, the operation is convenient, and the heat treatment effect of the steel rail can be ensured.

Description

Technical field [0001] The invention belongs to the technical field of metal heat treatment equipment, and specifically relates to a steel rail heat treatment device and a heat treatment method. Background technique [0002] With the promotion of the "high-speed passenger transport and heavy freight" model in my country's railways, the railway speed, traction weight, transport density and total annual passing weight continue to increase. The strength of ordinary hot-rolled rails is no longer sufficient to meet the new requirements of railway development. The frequency of damage has increased, especially the contact fatigue damage such as fish scale damage and peeling off of curved rails. For this reason, the railway department requires the use of steel rails with high strength, high wear resistance and resistance to contact fatigue to reduce the occurrence of rail damage and increase its service life. [0003] Domestic and foreign research and practical experience show that the hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/04
CPCC21D9/0062C21D9/04C21D2211/009
Inventor 费俊杰周剑华吴杰周桂峰朱敏郑建国王瑞敏徐志东
Owner 武汉钢铁有限公司
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