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Train wheel cooling device and method and preparation method

A technology of cooling device and cooling method, which is applied in the direction of quenching device, manufacturing tools, heat treatment equipment, etc., can solve the problems of unresolved rim cooling uniformity, inability to fully cover, affect the uniformity of rim section hardness, etc., and achieve enhanced cooling uniformity performance, improve the cooling effect, improve the effect of cooling uniformity

Pending Publication Date: 2020-02-11
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the second set of small-flow nozzles of this solution is integrated on the water spray panel of the first set of large-flow nozzles, and protrudes to a certain length. Due to the limitation of the spray range, it cannot fully cover the entire tread area, which directly affects the hardness of the rim section. Uniformity, which cannot solve the problem of cooling uniformity in the axial direction of the rim mentioned above

Method used

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  • Train wheel cooling device and method and preparation method
  • Train wheel cooling device and method and preparation method
  • Train wheel cooling device and method and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0054] The utility model relates to a cooling device for railway wheels, which is used for cooling the wheels during the heat treatment stage during the preparation of the iron wheels. Such as figure 1 As shown, the device includes a quenching platform 1 and a spray gun 2. The quenching platform 1 is a wheel structure that can rotate by itself, and the rotation is controlled by a motor. There are multiple spray guns 2, which are evenly distributed along the circumference of the quenching platform 1. Depending on the size of the diameter, the present embodiment is 6 spray guns. When cooling the wheel, place the side of the wheel on the quenching platform 1, make the spraying direction of the spray gun 2 face the tread of the wheel, and carry out spray cooling to the tread of the wheel. The specific structure of the spray gun 2 will be described in detail below.

[0055] Such as Figure 1 to Figure 3 As shown, the spray gun 2 includes a water outlet panel 21 and a water inlet...

Embodiment 2

[0062] A method for cooling railway wheels, adopting a kind of railway wheel cooling device of embodiment 1 to cool the wheels to be cooled, comprising the following steps:

[0063] 1. Preparation stage

[0064] Transport the wheel to be cooled in the heat treatment stage to the quenching platform 1, make the side of the wheel face up, and the wheel tread is facing the water outlet panel 21 of the spray gun 2, and then start the quenching platform 1, so that the wheel is in a rotating state.

[0065] 2. Small flow injection stage

[0066] Start the small nozzle branch pipe 25 to spray the wheels, the spraying time is 60-210s, and the water pressure is P0. In this step, P0 is 0.05-0.15Mpa. The specific spraying time depends on the wheel diameter of the wheel and the chemical composition of the wheel steel. When the transformation of complete fine pearlite + a small amount of ferrite, that is, F-P structure, occurs within a certain depth near the surface of the tread, the spray...

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Abstract

The invention discloses a train wheel cooling device and method and a preparation method, and belongs to the technical field of train wheels. The device comprises a quenching table and a plurality ofspray guns which are uniformly arranged in the circumferential direction of the quenching table, and each spray gun comprises a water outlet panel and a water inlet branch pipe. Large and small spraying holes which are different in diameter are formed in the water outlet panels, wherein outlet water from the small spraying holes is separately controlled by a branch pipe, the large spray holes aredivided into the upper large spray holes and the lower large spray holes, and outlet water from the upper large spray holes and outlet water from the lower large spray holes are controlled by different branch pipes. According to the train wheel cooling device, the intensity of the cooling water jetted to the train wheels can be easily adjusted, and the uniformity of cooling, in the radial direction and in the axial direction, of wheel rims is improved. The cooling method is used for cooling of heat treatment of the train wheels by using the cooling device when the train wheels are prepared, the hardness uniformity of the wheel rims is effectively enhanced, and the using performance of the train wheels is improved. The preparation method is used for cooling of the heat treatment of the train wheels in the process of preparation using the cooling method, and the train wheels which are high in wheel rim hardness uniformity can be prepared.

Description

technical field [0001] The invention belongs to the technical field of railway wheels, and more specifically relates to a railway wheel cooling device, a cooling method and a preparation method. Background technique [0002] At present, in the preparation process of railway wheels at home and abroad, continuous low-pressure and high-flow forced water spray cooling on the tread surface is a common heat treatment cooling method. However, in this cooling method, the near surface of the tread is in direct contact with the cooling medium, and the instantaneous temperature drop is extremely large, while the heat inside the rim can only be carried away by the cooling medium by heat conduction to the near surface of the tread. The cooling speed is significantly higher than that of the near surface of the tread. reduce. The huge difference in cooling rate between the near-surface layer of the tread and the interior of the rim not only causes the formation of an abnormal non-pearlite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/667C21D1/06C21D9/04
CPCC21D1/06C21D1/667C21D9/0062C21D9/04
Inventor 姚三成钟斌邓荣杰江波刘学华宫彦华赵海陈刚
Owner MAANSHAN IRON & STEEL CO LTD
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