Manufacture method for integrally extruding and forming graphite-based composite material radiator

Abstract

The invention relates to the field of heat source radiator technology of an electronic device, in particular to a manufacture method for integrally extruding and forming a graphite-based composite material radiator. The method comprises the manufacture and process steps of: hot-kneading raw materials to prepare a paste with uniform mixing performance and excellent viscoplasticity, arranging the paste into an extrusion press to carry out pre-compression to form a billet, extruding and forming the billet, cooling and cutting the billet after extruding, baking and graphitizing the extruded raw product, and soaking and surface-treating the graphitized product, thus preparing the final radiator product. The manufacture method has the following advantages of (1) being capable of manufacturing graphite radiator with complex section; (2) large flexibility and being capable of producing the graphite radiators with different shapes, specifications and types on the same extrusion press by replacing an extrusion die; and (3) simple process flow and high production efficiency. The graphite radiator manufactured by the method has the advantages of good heat conduction, light weight, etc., and has no pollution during the process, is simple and feasible and has low consumption and high efficiency.

Description

technical field [0001] The invention relates to the technical field of heat source radiators for electronic devices, in particular to a manufacturing method for integral extrusion forming of graphite-based composite material radiators. Background technique [0002] With the development of electronic equipment toward precision, miniaturization, and light weight, a large amount of heat will be generated and accumulated during operation, resulting in relatively extreme temperatures. Usually, large computers, computer CPUs, graphics cards and various electrical devices can only work normally within a specific temperature range. If the heat generated during the operation of these components cannot be dissipated in time, the performance and stability of the entire system will be seriously affected. At the same time, as the performance of electronic equipment continues to improve and the degree of integration is getting higher and higher, the heat sink, which is an important part ...

AI Technical Summary

Problems solved by technology

There are following drawbacks in adopting the above method to manufacture graphite radiators: (1) need to select special graphite ore with less reserves in nature, and the raw materials are not easy to obtain and expensive; (2) some graphite raw materials are wasted; (3) the process is cumbersome and unnecessary It is beneficial to large-scale industrial production; (4) the sheet is embedded on the metal base. Since most of them are still made of metal, the defect of using a metal heat sink cannot be completely changed.

At present, there is no method for integrally manufacturing graphite radiators in the world