Steel rail welding joint heat treatment device and heater thereof

A technology for heat treatment devices and welded joints, which is applied in the direction of track, track laying, track maintenance, etc., can solve the problems of low ignition point, the research and improvement of the water cooling structure that has not been found to minimize or eliminate the heater, and the bulky heat treatment device. effect of weight
CN101761002AActive Publication Date: 2010-06-30CHINA ACADEMY OF RAILWAY SCI CORP LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA ACADEMY OF RAILWAY SCI CORP LTD
Publication Date
2010-06-30

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Abstract

The invention provides a heater for a steel rail welding joint heat treatment device, comprising a plurality of fire holes. The heater surrounds the steel rail welding joint and carries out the heat treatment for the steel rail welding joint by using the gas through the fire holes. The heater is made from the metal which has the thermal conductivity coefficient of not less than 350 W / m.k and the radiating surface area of not less than 240,000 mm2. The invention also discloses the steel rail welding joint heat treatment device which comprises a support structure, the heater and a sliding mechanism, wherein the support structure is fixedly arranged relative to a steel rail, the sliding mechanism is provided with a first end and a second end and is supported on the support structure to slide on the extension direction of the steel rail, and the heater is arranged on the sliding mechanism.
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Description

technical field

[0001] The invention relates to a device for heat-treating rail welded joints after rail welding (such as flash welding, gas pressure welding, thermite welding and narrow gap arc welding) in the railway or urban rail transit industry, and is especially suitable for use in rail laying sites Apparatus for heat treatment of welded joints of rails. The invention also relates to the heater of the device. Background technique

[0002] In the railway or urban mass transit industry, rails need to be welded for seamless track construction. In the prior art, welding for rails generally includes flash welding, gas pressure welding, and thermite welding. The heat treatment of rail welded joints can significantly improve the mechanical properties of welded joints. Taking flash welding and gas pressure welding as examples, the elongation and impact absorption energy of joints can be increased by 50% to 100% through heat treatment, thereby greatly improving the service l...

Claims

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