Bending deformation controllable steel rail online overall wind spraying quenching simulation experiment device

Abstract

The invention discloses a bending deformation controllable steel rail online overall wind spraying quenching simulation experiment device, and relates to a steel rail online wind spraying quenching simulation device, in particular to the bending deformation controllable steel rail online overall wind spraying quenching simulation experiment device. The wind spraying quenching simulation experiment device, provided by the invention, can control the steel rail deformation in the quenching process, and can simulate actual continuous wind spraying quenching process of steel rails on a hectometer steel rail production line. The device comprises a wind spraying pressure control system and a quenching system connected with an air source, and is characterized in that the quenching system comprises a frame with an annular rail; the annular rail is provided with a steel rail fixed frame with a walking device; the frame is provided with nozzles uniformly arranged around the annular rail; the nozzles are connected with the wind spraying pressure control system; and the steel rail fixed frame is provided with a longitudinal displacement sensor and a transverse displacement sensor.

Description

technical field [0001] The invention relates to an online blast quenching simulation device for rails, in particular to an online overall blast quenching simulation experiment device for rails with controllable bending deformation. Background technique [0002] Railway transportation has always played a very important role in the development of my country's national economy, and its development is related to the national economy and people's livelihood. High-speed, heavy-load is the general trend of the world's railway development, and the high-speed, heavy-load and high-density transportation organization of the railway will inevitably lead to an increase in the rolling contact stress of the wheel and rail, which will further deteriorate the service conditions of the rail, and further affect the strength and toughness of the rail. put forward higher requirements. [0003] Long-term practice has proved that air jet quenching is the most economical and effective heat treatme...

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Problems solved by technology

[0004] Although, at present, for the rail blast quenching heat treatment process, there has been a rail online blast quenching heat treatment simulation experimental device, the patent publication (announcement) No. CN 103131826 A; it discloses a rail blast cooling experimental device, the experiment The device collects the final quenching results of the rails by setting the air spray parameters, and then gradually obtains the best air spray parameters. It cannot adjust the air spray parameters carefully during the quenching process. Therefore, the experimental method requires a lot of effort. Energy and time are extremely inefficient; at the same time, due to scale and cost limitations, the above-mentioned blast quenching simulation experiment device for rails cannot really simulate the actual continuous blast quenching process of rails on the 100-meter rail production line, that is, the rails are heated at a constant speed (about 1.5 m / s) through the nearly 100-meter jet quenching production line

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