Electron beam surface modeling process of a cold plate with low resistance and enhanced heat transfer

Abstract

The invention relates to an electron beam surface modeling process of a low-resistance enhanced heat-exchange cold plate, which forms a three-dimensional structure unit with a certain height by processing inside the heat-exchange cold plate of the radiator, under the premise of affecting the fluid resistance in a small range , disturb the fluid motion state to the greatest extent, thereby improving the heat exchange efficiency of the heat exchanger, use special tooling to effectively conduct heat to the workpiece, ensure the stability of the molding unit, the molding process is simple and easy to control, the process parameters are set reasonably, and according to different According to the shape and shape of the channel, different molding schemes can be adopted to effectively improve the molding efficiency and solve the technical problem of electron beam molding of the heat exchange cold plate from a practical level.

Description

technical field [0001] The invention relates to the field of surface treatment of metal materials, in particular to an electron beam surface modeling process of a low-resistance enhanced heat exchange cold plate. Background technique [0002] Usually, the radar TR component uses a cold plate to dissipate heat. Channels for the flow of heat exchange liquid are prepared on the cold plate by machining, and the fluid flows in the channels for heat exchange. At present, the bottom of the cold plate is a smooth plane, and the heat dissipation efficiency is low. [0003] Electron beam surface modeling technology has the advantages of controllable shape, no pollution, high processing efficiency, etc. It is very suitable for the modeling treatment of smooth surface of workpieces. In the prior art, there have been some studies on the use of electron beam surface modeling technology to shape smooth plate surfaces. For example, in the invention patent CN105328325A "Electron beam surfac...

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Problems solved by technology

[0003] Electron beam surface modeling technology has the advantages of controllable shape, no pollution, high processing efficiency, etc. It is very suitable for the modeling treatment of smooth surface of workpieces. In the prior art, there have been some studies on the use of electron beam surface modeling technology to shape smooth plate surfaces. For example, in the invention patent CN105328325A "Electron beam surface processing method for realizing workpiece drag reduction and plate with drag reducing surface", the ability of electron beam surface processing is used for surface treatment, forming multiple parallel strips on the workpiece surface shaped ribs, but its core is to process multiple parallel ribs with low heights to achieve the purpose of drag reduction. The fine structure of triangular grooves is formed in a single shape, and the drag reduction effect is limited; the invention patent CN110391197A "A Low Thermal Resistance Enhanced Heat Exchange Cold Plate Structure for Ship Radar Radiators" relates to a low thermal resistance enhanced heat exchange cold plate structure for ship radar radiators , it is proposed to process a star-shaped array in a unidirectional linear flow channel to improve the efficiency of the heat exchanger. In the actual modeling process, there are still many problems that need to be overcome. For example, in order to improve the heat transfer efficiency, the material of the heat exchange cold plate is mostly a material with strong thermal conductivity. Heat concentration occurs, which leads to the collapse of the molding unit and increases the difficulty of molding. In addition, the shape of the cold plate channel actually used is often more complex, mostly curved, not in a single direction, and the molding shapes required by different runner areas may be different. For complex cold plate channel shapes and non-uniform three-dimensional modeling units, how to control the molding process and process parameters, improve processing efficiency and ensure molding effects are all problems that need to be solved by technicians

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