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Manufacturing process of novel embedded metal tube die-casting cooling cavity

A heat dissipation cavity and manufacturing process technology, applied in the field of die-casting heat dissipation cavity manufacturing process of embedded metal tubes, can solve the problems of high technical level requirements for operators, high product processing costs, and large waste of materials, etc., and meet the technical level requirements Low cost, low processing cost, and the effect of saving raw materials

Active Publication Date: 2014-07-16
CHENGDU TIGER MICROWAVE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are following defects in the processing of this process: 1. Processing the extruded aluminum alloy sheet into the cavity and opening the groove for installing the metal pipe will cause a lot of material waste; 2. The product processing cycle is long; 3. The product processing cost is high ;4. Process the groove on the aluminum alloy sheet, apply heat-conducting glue in the groove, and install the metal pipe. The process is complicated and requires high technical level of the operator; 4. There is a gap between the metal pipe and the aluminum alloy cavity. Non-seamless contact, low heat dissipation efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The manufacturing process of a new type of pre-embedded metal tube die-casting heat dissipation cavity includes the following steps:

[0026] S1, tube selection: select a metal tube with a wall thickness of 1mm, and remove the port burrs;

[0027] S2. Improve the compressive strength of the metal tube: Fill the metal tube with quartz sand, and seal the two ports of the metal tube;

[0028] S3. Flame heating: According to the processing drawings, the parts of the metal tube that need to be bent are heated by a gas cutting torch to make the surface temperature of the metal tube reach 600 °C;

[0029] S4. Bending forming: put the heated part of the metal tube on the bending forming die or bender, bend it according to the processing drawing, and cool it to normal temperature;

[0030] S5. Welding water nozzle: Weld the two ports of the metal pipe with the two water nozzles by brazing;

[0031] S6, put into the die-casting mold: put the bent metal tube into the die-casting...

Embodiment 2

[0036] The manufacturing process of a new type of pre-embedded metal tube die-casting heat dissipation cavity includes the following steps:

[0037] S1, tube selection: select a metal tube with a wall thickness of 1.5mm, and remove the port burrs;

[0038] S2. Improve the compressive strength of the metal tube: Fill the metal tube with quartz sand, and seal the two ports of the metal tube;

[0039] S3. Flame heating: According to the processing drawings, the parts of the metal tube that need to be bent are heated by a gas cutting torch to make the surface temperature of the metal tube reach 700 °C;

[0040] S4. Bending forming: put the heated part of the metal tube on the bending forming die or bender, bend it according to the processing drawing, and cool it to normal temperature;

[0041] S5. Welding water nozzle: Weld the two ports of the metal pipe with the two water nozzles by brazing;

[0042] S6, put into the die-casting mold: put the bent metal tube into the die-casti...

Embodiment 3

[0047] The manufacturing process of a new type of pre-embedded metal tube die-casting heat dissipation cavity includes the following steps:

[0048] S1, tube selection: select a metal tube with a wall thickness of 2mm, and remove the port burrs;

[0049] S2. Improve the compressive strength of the metal tube: Fill the metal tube with quartz sand, and seal the two ports of the metal tube;

[0050] S3. Flame heating: According to the processing drawings, the parts of the metal tube that need to be bent are heated by a gas cutting torch to make the surface temperature of the metal tube reach 800 °C;

[0051] S4. Bending forming: put the heated part of the metal tube on the bending forming die or bender, bend it according to the processing drawing, and cool it to normal temperature;

[0052] S5. Welding water nozzle: Weld the two ports of the metal pipe with the two water nozzles by brazing;

[0053] S6, put into the die-casting mold: put the bent metal tube into the die-casting...

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Abstract

The invention relates to a manufacturing process of a novel embedded metal tube die-casting cooling cavity. The manufacturing cost comprises the following steps of S1, tube selecting, wherein the thicknesses of selected metal tubes are within the range of 1-4 mm, and burrs at end openings are removed; S2, bent forming, wherein heated parts of the metal tubes are placed on a bend-forming die or a bender and are bent according to a machining drawing, and the heated parts are cooled to be at the normal temperature; S3, water nozzle welding; S4, placing and locating the metal tubes and the water nozzles in a die-casting die; S5, die closing and die-casting, wherein after the die-casting die is closed, aluminum alloy solution is poured to a melting cup of a die-casting machine and is injected to the die through injection force of the die-casting machine, and the metal tubes are wrapped by the aluminum alloy solution; S6, die-casting pieces are taken out after the die is opened; S7, washing, drying, deburring, and local CNC machining, wherein finished products are finally obtained. The manufacturing process has the advantages that the die-casting piece and the metal tube are integrally formed in one time, raw material cost is low, machining cost is low, machining cycle is short, the production process is simple, and the cooling effect is improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing of heat sinks used in the working process of electronic components, in particular to a novel manufacturing process of a die-casting heat sink cavity of a pre-embedded metal tube. Background technique [0002] Any electronic device has a certain loss when it is working, and most of the loss becomes heat. Low-power devices have small losses and do not need a heat sink, while high-power devices have large losses. If heat dissipation measures are not taken, the temperature of the device can reach or exceed the allowable junction temperature, and the device will be damaged. Therefore, a cooling device must be added. The most commonly used is to install the power device on the radiator, use the radiator to dissipate the heat to the surrounding space, and add a cooling fan if necessary to enhance cooling and heat dissipation at a certain wind speed. On the power devices of some large-scale equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/26
CPCB23P15/26B23P2700/09
Inventor 李先超
Owner CHENGDU TIGER MICROWAVE TECH
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