Heat treatment part cooling device

Abstract

The invention belongs to the field of general heat treatment methods and devices and particularly discloses a heat treatment part cooling device. The heat treatment part cooling device comprises an outer shell, a clamp, a heat source pipe, an electronic control vacuumizing pump, an electronic control gas sending pump and an electronic control heat exchanging pump. The clamp is located in the outer shell and comprises a first clamping plate and a second clamping plate. The first clamping plate is provided with a sealing piece used for abutting against a spare part and the heat source pipe, and the second clamping plate is provided with a sealing piece used for abutting against the spare part. A first through hole is formed in the second clamping plate and provided with the sealing piece. The heat source pipe is installed in the first through hole and provided with a second through hole, a third through hole and a fourth through hole, and the second through hole is located in the side, close to the first clamping plate, of the second clamping plate and provided with an electric first valve. According to the heat treatment part cooling device, part of gas is fixed between the spare part and the heat source pipe, gas with the volume being fixed is used as a heat exchanging medium, good diffusivity of the gas is used for cooling the spare part, and consistent temperature changing of all places in the spare part is ensured.

Description

technical field [0001] The present invention belongs to the field of general methods or equipment for heat treatment. Background technique [0002] The heat treatment method of high temperature tempering after quenching is called quenching and tempering treatment. Generally, tempering only needs to be kept at one temperature for a certain period of time, but in order to meet certain physical characteristics of the parts, a stepwise cooling is required after tempering, that is, when the temperature drops to a certain temperature, keep it for a period of time, and then lower the temperature to the next temperature and keep it for a period of time , and so on until it drops to room temperature. This treatment method can greatly adjust the performance and material of steel, and its strength, plasticity and toughness are all good, and it has good comprehensive mechanical properties. At this time, the ferrite has basically no carbon supersaturation, and the carbide is also a sta...

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Problems solved by technology

However, the existing cooling device is only aimed at the one-time cooling process, which does not need to consider the influence of the temperature change of the heat source on the mechanical properties of the parts during the step-wise cooling.

When using the existing cooling device for stepwise cooling, because of the temperature change of the heat source and the exchange of the gas in the device with the outside world, the temperature of the gas in contact with the parts is inconsistent, which will cause the temperature changes of the parts to be inconsistent. Therefore, the existing cooling The device is not suitable for stepwise cooling process

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