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Double-sided friction stir welding cold plate and processing method thereof

A technology of friction stir welding and processing methods, applied in metal processing equipment, cooling/ventilation/heating transformation, manufacturing tools, etc., can solve problems such as increasing the complexity of processing technology, improve overall connectivity, and prevent welding shavings from entering Runner, the effect of preventing welding shavings from entering the runner

Pending Publication Date: 2019-06-28
AAVID SHANGHAI SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in friction stir welding, because the size of the cover plate is relatively large relative to the size of the corresponding flow channel, the arrangement of the flow channels in the cold plate is greatly limited by the welding process, which increases the complexity of the processing process

Method used

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  • Double-sided friction stir welding cold plate and processing method thereof
  • Double-sided friction stir welding cold plate and processing method thereof
  • Double-sided friction stir welding cold plate and processing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051] This embodiment provides a method for processing a double-sided friction stir welding cold plate, comprising the following steps:

[0052] Process the flow port: process the flow port 1 on the peripheral side of the substrate 100;

[0053] Process flow channels: process a plurality of spaced upper flow channels on the upper side of the substrate 100, and process a plurality of spaced lower flow channels on the lower side of the substrate 100, the lower flow channels are connected with the upper flow channels, and the two flow channels are connected to the upper flow channels respectively The two flow ports 1 are directly connected, so that the cold flow medium enters from one flow port 1, alternately flows through the upper flow channel and the lower flow channel, and flows out from the other flow port 1;

[0054] Process the cover plate 200: design the cover plate 200 matching it according to the shape of the flow channel;

[0055]Welding forming: the cover plate 200 ...

Embodiment 2

[0083] This embodiment provides a method for processing a double-sided friction stir welding cold plate, comprising the following steps:

[0084]1. Material preparation: 100 6-series aluminum substrates, 200 main channel cover plates are 6-series aluminum materials with a thickness of 3mm, and the cover plate 200 with heat dissipation fin structure is 1-series aluminum materials, the height of the fins does not exceed 5mm, and the fin processing limit The thickness is 0.1mm, and the fin spacing is 0.2mm.

[0085] 2. Processing: the inlet and outlet are processed on the peripheral side of the substrate 100, and the flow channels are processed on the upper and lower sides of the substrate 100. The depth of the flow channels in the heat dissipation area is 0.1mm greater than the height of the fins, so as to avoid warping of the cover plate 200 during welding;

[0086] 3. Welding: Friction stir welding is used to weld along the edges of each cover plate 200, and then secondary wel...

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Abstract

The invention relates to the technical field of heat dissipating devices and particularly relates to a double-sided friction stir welding cold plate and a processing method thereof. According to the double-sided friction stirring welding cold plate, a circulation port is set on a circumferential side surface of a substrate, upper and lower side faces of the substrate are provided with upper flow paths and lower flow paths, the upper flow paths are spaced apart from each other and do not communicate with each other, and the lower flow paths are spaced apart from each other and do not communicate with each other, the upper flow channels and the lower flow channels are in communication, and the complexity of the process is reduced. In addition, cover plates are arranged corresponding to the flow channels, the cover plates are welded to the substrate by friction stir welding, welding debris can be effectively prevented from entering the flow channels, the cleanliness of the flow channels is ensured, and the heat dissipation effect is improved. The processing method is used for processing the above double-sided friction stir welding cold plate, the processing process is simple, impurities in the flow channels can be reduced, and the heat dissipation effect is improved.

Description

technical field [0001] The invention relates to the technical field of heat dissipation equipment, in particular to a double-sided friction stir welding cold plate and a processing method thereof. Background technique [0002] The cold plate is a single-fluid (gas or liquid) heat exchanger, which can dissipate heat and cool through the circulation of fluid. The cold plate is usually made of aluminum alloy or copper alloy. It has the characteristics of high heat dissipation efficiency and small temperature gradient. It has broad application prospects in power electronics, aerospace, ships and other fields. It is an ideal heat dissipation element for various high-power electronic equipment . In the electronics industry, electronic fluorinated liquid is usually used as the internal circulation medium of the cold plate to dissipate heat from the chip, which requires a high degree of cleanliness of the cold plate, so the structure of the cold plate needs a special design. The c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20B23K20/12B23K20/24
Inventor 许井慧张传美
Owner AAVID SHANGHAI SYST
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