Evaluation device and method for heat exchange effect of heat pipe grinding wheel

Abstract

The invention provides an evaluation device and method for the heat exchange effect of a heat pipe grinding wheel. The device and method are especially suitable for heat exchange effect evaluation of heat pipe grinding wheels of different sizes and under different hot end and cold end conditions. The device of the invention mainly comprises a heat pipe grinding wheel, a simulated grinding arc zone heating stage, a heating power supply, a temperature thermocouple, and a cooling instrument. The simulated grinding arc zone heating stage includes a support, a support table and a heat conduction assembly installed on the support table. The heat conduction assembly is connected to the heating power supply through a copper electrode that is fixedly mounted on the support table. And the heat conduction assembly is in connection with the temperature thermocouple. Also the bottom of the heat conduction assembly is in heat insulation arrangement with the side faces. The circular surface of the heat pipe grinding wheel is a smooth surface. And the cooling instrument is used for cooling the cold end of the heat pipe grinding wheel.

Description

technical field [0001] The invention relates to a heat exchange effect evaluation device and method of a heat pipe grinding wheel, which is used for evaluating the heat exchange effect of a heat pipe grinding wheel, and belongs to the field of high-efficiency grinding of difficult-to-machine materials. Background technique [0002] Titanium alloys and high-temperature alloys have been widely used in the field of aviation manufacturing, and these materials are difficult to process. Taking the grinding of the above materials as an example, due to the poor thermal conductivity of the materials, the temperature in the grinding arc area is often very high. It is easy to cause thermal burns, residual stress and microcracks on the surface of the processed material. The current commonly used cooling method is high-flow high-pressure liquid injection cooling. However, since the grinding arc area is a relatively closed area, it is difficult for the coolant to enter the arc area, especi...

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Problems solved by technology

[0002] Titanium alloys and high-temperature alloys have been widely used in the field of aviation manufacturing, and these materials are difficult to process. Taking the grinding of the above materials as an example, due to the poor thermal conductivity of the materials, the temperature in the grinding arc area is often very high. It is easy to cause thermal burns, residual stress and microcracks on the surface of the processed material. The current commonly used cooling method is high-flow high-pressure liquid injection cooling. However, since the grinding arc area is a relatively closed area, it is difficult for the coolant to enter the arc area, especially It is because the grinding arc length is longer or the cooling effect under high-speed and ultra-high-speed grinding conditions is not ideal. Therefore, in order to avoid processing problems caused by high temperature grinding, the existing technical conditions are difficult to process such as titanium alloys and high-temperature alloys. The processing efficiency of materials is very low, but from a deeper analysis, it can be found that the key to improving the processing efficiency of these difficult-to-machine materials is to effectively solve the problem of heat conduction in the grinding arc area of ​​the material during the grinding process and the impact on the grinding arc. zone temperature control

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