Offline or online integral quenching/tempering thermal treatment production line for standard steel rail and profiled steel rail

Abstract

The invention relates to an offline or online integral quenching / tempering thermal treatment production line for a standard steel rail and a profiled steel rail, which is structurally characterized by comprising a chassis, an upper compression roller support, electromagnetic induction heaters, a steel rail, upper compression rollers, an upper compression roller adjusting device, lower pinch rollers, an air and water injection device, an infrared thermodetector, a bearing block, a frequency conversion and speed regulation speed reducer, a charging end and discharging end live-roll table 12 anda tempering induction heater. The invention has the advantage that the steel rail can not deflect when moving in the middle. Frequency conversion and speed regulation are adopted by a driving / driven roller set and the pinch roller. A plurality of pairs of pinch rolls are formed by using the upper compression rollers and the lower pinch rollers to forcibly pinch the steel rail to limit the deformation of the steel rail; the height of the upper compression rollers can be regulated; the shifting speed required by a heating and spray quenching process is satisfied by adopting the frequency conversion and the speed regulation speed, and two electromagnetic induction heaters are arranged to heat the steel rail to reach the process temperature. The infrared thermodetector can monitor the heatingfinal temperature of the steel rail, the temperature of the steel rail can be stabilized in the temperature range of the quenching process, and the heating temperature is even.

Description

technical field [0001] The present invention relates to the off-line or on-line overall quenching and tempering heat treatment production line of standard rails and special-shaped rails (off-line or on-line electromagnetic induction heating of standard rails and special-shaped rails, spraying compressed air and water on the rail head tread, rail body and rail bottom quenching and tempering heat treatment production line). The invention belongs to the technical field of rail quenching and tempering heat treatment. Background technique [0002] Domestic and foreign technologies use standard gauges; domestic and foreign use a single method of air injection or water injection; transmission and straightening are separated, and it is difficult to eliminate internal stress; it is difficult to heat up at the same time during heating, and there is no measure for uniform temperature rise. Contents of the invention [0003] The present invention proposes a standard steel rail and sp...

AI Technical Summary

Problems solved by technology

[0002] The technology at home and abroad is to use standard regulations; the single method of spraying air or water is used at home and abroad; the transmission and straightening are separated, and it is difficult to eliminate internal stress; it is not easy to heat up at the same time during heating, and there is no measure for uniform temperature rise

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