Steel rail integral air blast quenching experimental device

An experimental device and rail technology, applied in the direction of quenching device, furnace, heat treatment equipment, etc., can solve the problem of inability to verify the relationship between the air-cooled deformation law and mechanical properties of the rail bottom, the lack of theoretical basis for the quenching process parameters of the air-cooled quenching device, and the accuracy of experimental data Sexual impact and other issues, to achieve the effect of compact structure, ensuring accuracy and reducing residual stress

CN107400764AActive Publication Date: 2017-11-28UNIV OF SCI & TECH LIAONING
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-11-28

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Abstract

The invention relates to a steel rail integral air blast quenching experimental device, and can solve the problems that air blast quenching can only be applied to railheads, bending deformation and residual stress are likely to occur to steel rails and experimental data have poor accuracy in the prior art. The experimental device comprises a support frame, and is characterized in that the support frame is internally provided with a transmission roller, an upper air cooling apparatus is arranged above the transmission roller, a lower air cooling apparatus is arranged below the transmission roller, and both the upper air cooling apparatus and the lower air cooling apparatus are equipped with several groups of air blast components. The upper air cooling apparatus and the lower air cooling apparatus are in flexible connection with stand columns at two ends of the support frame respectively through connection end plates at both ends. One end of the transmission roller is equipped with a steel rail reciprocating motion mechanism, and two steel rail guide mechanisms are disposed opposite to each other at two sides above the transmission roller. The experimental device provided by the invention has the characteristics of reasonable design and compact structure, can perform air blast cooling to the railhead and rail bottom of a quenched steel rail, the air blast angle and pressure are adjustable, the experimental process approaches to actual production, and the research result is accurate.
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Description

technical field

[0001] The invention belongs to the technical field of metallurgical experimental equipment, and specifically relates to an overall air cooling of rails that can simultaneously spray air to cool the rail head and rail bottom, the air spray angle and pressure can be adjusted, the experimental process is close to actual production, and the research results are accurate. Quenching experimental device. Background technique

[0002] The high-speed, heavy-load and high-density transportation organization of the railway will inevitably lead to an increase in the wheel-rail contact stress and worsen the service conditions of the rail, thus putting forward higher requirements for the comprehensive performance of the rail. There are two effective methods for strengthening and toughening rails: alloying and heat treatment. Although the alloying method can greatly increase the strength of the rail, it is difficult to improve the toughness of the rail, and the alloyed ra...

Examples

Embodiment Construction

[0023] according to Figure 1-8The specific structure of the present invention will be described in detail. The overall air-cooled quenching experimental device for rails includes a support frame 1 enclosed by columns 8 and connecting beams, wherein the connecting beams include an upper connecting beam 12 arranged on the upper part of the supporting frame 1, and a middle connecting beam arranged in the middle of the supporting frame 1. Beam 7. The inside of the support frame 1 is provided with a horizontally arranged transmission roller table 2 for reciprocating sliding of the quenched steel rail 10; above the transmission roller table 2 is provided with an upper air cooling device 13 for cooling the head of the quenched steel rail 10, and the upper air cooling device 13 is composed of an upper sub-air box 14 with an upper part provided with an air inlet port 6, and the lower part of the upper sub-air box 14 is provided with several groups of blowing assemblies 5 arranged alo...