TW572800B - Method for producing heat-transfer super-conductive block or component by powder metallurgy - Google Patents

Abstract

A method for producing heat-transfer super-conductive block or component by powder metallurgy comprises the following steps: (a) selecting a heat-transfer super-conductive pipe/article having a melting point higher than the sintering temperature of a powder metallurgy material; (b) bending the heat-transfer super-conductive pipe/article according to a processing demand; mounting the heat-transfer super-conductive pipe/article in a forming mold; (d) forming a blank by injecting a mixture of a metal powder and a polymeric binder, together with the heat-transfer super-conductive pipe/article; (e) degreasing by a solvent; (f) degreasing by heat; (g) performing a sintering operation; and (h) cooling the formation to produce a product.

Description

572800 V. Description of the invention (1) ~ ~ ____________ [Field of the invention] The present invention provides a method or a method of making a piece or a part, and uses powder metallurgy technology to make heat conduction superconducting energy, which is suitable for any payment # fault to enhance the heat conduction block, Sheets or parts with good thermal conductivity. Where the medium needs to transfer heat and heat quickly, or to provide more background than the [Background of the Invention] The seven industries in the product industry use the computer's central processing unit (CPU) or high-heat source products1. The base of an efficient aluminum heat sink (such as the heat sink manufactured by the Taiwan Patent No. 4 5 94 6 9) contacts the heat source to absorb and transfer the heat to the turntable of the heat sink, and then the fan is used. Blow out cold air to remove heat from the diffuser. …, Because the high heat generated by today ’s high-efficiency CPUs is as fast as the traditional 1-Lu heat sink, which can be quickly conducted and eliminated, the use of copper metal that has about twice the thermal conductivity than Ming metal to conduct heat from the CPU is Another option; however, the density of aluminum metal is about 2.7g / cm3, and the density of copper metal is 8.93g / cm3 (the copper metal of the same volume weighs about twice the weight of aluminum metal), so if copper metal is used entirely Manufactured into a heat sink will cause the ground plate to fail the ground test due to the heavy weight of copper, or the motherboard may be deformed after being installed on the motherboard for too long. At present, the so-called chain material heat sink with a copper bottom on the market is to use a forging or welding technique to fix a pre-formed copper plate to the bottom surface of the base of the heat sink; the Taiwan Patent Bulletin No. 4 5 9 4-6 9 It also belongs to the design that the copper plate is embedded in the aluminum heat sink.

Page 4 572800 V. Description of the invention (2) Although a small thickness copper plate embedded in an aluminum heat sink has the effect of improving thermal conductivity under lighter weight conditions, if an object with higher thermal conductivity can be used Combined with thermally conductive blocks, sheets, or parts such as metal materials, the thermal conductivity and heat dissipation performance of thermally conductive blocks, sheets, and parts can be further improved; however, traditionally limited by technical conditions, it has not been provided. Method for effectively combining highly thermally conductive objects with metallic materials. [Comprehensive description of the invention] The main purpose of the present invention is to provide a method for manufacturing a thermally conductive superconducting block or part by applying powder metallurgy technology, which is a method of sintering a thermally conductive superconducting tube, a body with high thermal conductivity, and a metal with good thermal conductivity. Together, it can be further formed into a thermally conductive block, a thermally conductive sheet, or a mechanical part, as the thermally conductive medium between the heat source and the heat-dissipating element, or directly as a heat-conducting and heat-dissipating element. A secondary object of the present invention is to provide a method for manufacturing a thermally conductive superconducting block or part by applying powder metallurgy technology. The thermally conductive block, sheet, and part made by the powder metallurgy technology have more excellent thermal conductivity, so It is suitable for connecting between components that need to conduct heat, so as to obtain high-efficiency heat conduction effect. Based on this, the method for manufacturing thermally conductive superconducting blocks or parts using powder metallurgy provided by the present invention must first select a thermally conductive superconducting tube and body with a melting point higher than the sintering temperature of the powder metallurgy material, and process the thermally conductive superconducting tube and body as required. After bending, it is placed in the mold, and then the metal powder is

572800 V. Description of the invention (3) The mixed material with polymer binder is combined with heat-conducting superconductors by injection molding to form a green embryo, and then it can be cooled and molded into a degreasing order after solvent degreasing, thermal degreasing and sintering. Finished product. Other objects and functions of the present invention will be further explained with the following drawings. [Explanation of the Example] Referring to the flowchart of the first figure, the method for manufacturing a thermally conductive superconducting block or part using powder metallurgy provided by the present invention includes the following steps: a. Selecting a thermally conductive superconducting tube and body, And the melting point of the heat-conducting superconducting tube and body is higher than the sintering temperature of the powder metallurgy material. b. Process the heat-conducting superconducting tube and body as required. c. Place the heat-conducting superconduit and the body into a mold. d. The mixed material of metal powder and polymer binder is combined with the heat-conducting super-catheter and the body to be injection-molded to form a green embryo. e. Solvent degreasing. ί. Hot degreasing. g. Sintering. a. Cool forming to complete the finished product. The thermally conductive superconducting tubes and systems adopt metal tubes (such as copper, aluminum or other metal tubes) that can be bent or deformed freely, and the inside of the tubes or bodies has been filled or contains materials with high-speed thermal conductivity, such as :

572800 Fifth, invention = Ming (4) chemical / physical materials, such as: _ copper oxide; b ^ (BSCC0) ^ V; Τ-ί 3, other Ϊ! Pure water or other organic superconducting materials. Shipped to a fast-return thermally conductive material. Ten expected to leak i: f funeral! The two ends of the processing are closed, the ... the corresponding catheter 1; the above-mentioned inorganic superb = the phase transition of "time", "quickly, because the transmission branch end is transmitted to ..., the conductive superconductor, the body J The heat transfer time of the superconducting superconducting tube and body from the & to the cold end is very short, so the hot end and = = can achieve the best heat conduction effect. It is confirmed by experiments that the heat transfer rate is five times higher than that of ordinary aluminum metal. Ten times faster: The method of the present invention described above, which can first transfer heat '=; bend = other three-dimensional shapes, and then single or = branch: special superconducting catheter, body into the mold, Then, the mixed material of metal powder and high heat ^ 2 agent is injected into the molding mold by injection molding technology and combined with this teaching 2! Tubes are combined into raw embryos; stomach raw embryos # sequence sequence Lin solvent degreasing, ..., degreasing The month and sintering procedures can be cooled to complete the finished product.

Page 7 572800 V. Description of the invention (5)

Although the thermal conductivity of the heat-conducting superconducting tube and the body (THERMO CONDUCTIVITY) exceeds 20,000 W / m2 -K, it has a very high heat-conducting efficiency, but because the shell of the heat-conducting superconducting tube and the body itself is a hollow metal tube, it cannot Has good strength, easy to deform, and the finished product is not easy to adhere to various objects; therefore, the present invention uses powder metallurgy technology to sinter metal powder materials in heat-conducting superconductors and bodies to form heat-conducting superconducting blocks, sheets, and even directly shape them. For mechanical parts, the thermal conductivity of thermally conductive superconducting blocks, sheets, and parts can still reach 5, 000w / nf _κ, and the thermal conductivity of 400W / ni-K is much higher than ρ. 4 Metals will not exceed i After the metal powder is injection-molded, the sub-binder is mixed, and then a mixture of the metal powder and the high-knife material is used, and then ^ 〇 ..., and a flow-type mold with a similar plastic material is formed into a knot: put the The mixed material is injected into the adult embryo. After injection molding, the raw, ...., conductive superconducting tube, body is formed to remove polymer adhesion, and then = solvent degreasing and thermal degreasing are too light. Excellent mechanical and physical: Quality: = high can be obtained after knotting ... This kind of sintered heat-conducting block, heat block, sheet, or part can be used to conduct heat through the heat, and when it touches the heat source, the heat-conducting block can be quickly moved. The deposit by the aforementioned person of the present invention ^ w is mainly used for thermally conductive thermally conductive blocks and sheets made of heat sources, heat conduction efficiency; for example, complex ': conducted to another heat dissipation element, to deposit contact Heat source, and the thermal superconductor 22 will connect one end of the thermal superconducting block, the casing or the casing to the other end of the :: the other end of the broadcast film is in contact with the heat sink. Easy-to-dissipate components

D / 25UU, description of the invention (6) The fan performs heat dissipation, which is suitable for the device or effect of the heat dissipation element. Therefore, the present invention has a 3D three-dimensional shape, and the shape of the thermal superconducting block uses the aforementioned invention as a machine or The heat generated by the structure of the implement can be directly used by the above-mentioned persons only for the purpose of the invention. It should be included in the spirit of the invention, which should be included in the invention. Explain that for the part of the shell that is a response, a sheet, or a method, it explains how the form of this hair care is related to the different parts of the ring that conduct heat. It is made to absorb and limit the scope of the invention. The location is relatively small and then dispersed to conduct ~ # camp, the needs of the environment and parts, can be distributed by machines or implements. The preferred implementation system is based on how to modify or change it, but it is not easy to install to lift it. It can also be bent and sintered into various direct assembly operations.

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Claims (1)