Double-sided quenching cooling device for train wheel

Abstract

The invention discloses a double-sided quenching cooling device for a train wheel. The double-sided quenching cooling device for the train wheel comprises a wheel rotary driving device, a middle ringwater spraying device, a lower ring water spraying device and a wheel jacking device; a placed wheel is jacked up by the wheel rotary driving device; the wheel rotary driving device consists of a carrier roller and a motor reduction box assembly; the carrier roller is mounted on an output shaft of the motor reduction box assembly; the middle ring water spraying device consists of a middle ring water pipe, middle hoses and middle nozzles; the middle ring water pipe is connected with each middle nozzle for spraying cooling water towards a wheel tread through the corresponding middle hose; the lower ring water spraying device consists of a lower ring water pipe, lower hoses and lower nozzles; and the lower ring water pipe is connected with each lower nozzle for spraying cooling water towardsthe outer rim surface of the wheel through the corresponding lower hose. According to the double-sided quenching cooling device for the train wheel, the tread and the outer rim surface of a wheel rimare simultaneously subjected to water spraying cooling, namely, the method of increasing the cooling area of the rim and improving the cooling speed of the rim can improve the strength and the hardness and the wear resistance of the wheel without reducing the plasticity and the toughness.

Description

technical field [0001] The invention relates to the technical field of heat treatment of railway wheels, in particular to a double-sided quenching and cooling device for train wheels. Background technique [0002] With the high-speed and heavy-duty railway vehicles, the requirements for wheel quality are getting higher and higher, and heat treatment is a very critical quality control process in wheel manufacturing. The structure, performance and internal stress distribution of the wheel after heat treatment directly determine The operation and service of the wheel on the railway. [0003] At present, the commonly used wheel quenching method at home and abroad is tread quenching (that is, single-side quenching), that is, water spray quenching and cooling is performed on the rim tread to improve the comprehensive mechanical properties of the wheel rim. With the development of heavy-duty freight in the world, the axle load of freight in China, Australia, North America, Brazil ...

AI Technical Summary

Problems solved by technology

With the development of heavy-duty freight in the world, the axle load of freight in China, Australia, North America, Brazil and other countries continues to increase, and the wheels are prone to operating defects such as peeling off, excessive wear, and rolling and stacking during service. The requirements for hardness, plasticity and toughness, and the metallographic structure of the wheel tread are getting higher and higher, but the conventional single-side quenching and cooling method of the wheel can no longer meet this high-performance requirement

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