A kind of preparation method of aluminum silicon carbide water-cooled tooth plate

A technology of aluminum silicon carbide and porous silicon carbide, which is applied in the field of preparation of aluminum silicon carbide water-cooled tooth plates, to achieve the effects of yield and performance improvement, stable thermal expansion coefficient, and pressure reduction

Active Publication Date: 2022-04-19
珠海亿特立新材料有限公司
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for preparing an aluminum silicon carbide water-cooled gear plate in view of the above-mentioned deficiencies in the prior art, so as to solve the problem of leakage during the forming process of the water-cooled tooth plate of the aluminum silicon carbide composite prepared by the traditional integrated process. Teeth, short teeth, broken teeth and difficult demoulding, low yield rate and other problems

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  • A kind of preparation method of aluminum silicon carbide water-cooled tooth plate
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  • A kind of preparation method of aluminum silicon carbide water-cooled tooth plate

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[0039] The invention discloses a method for preparing an aluminum silicon carbide water-cooled tooth plate. The aluminum silicon carbide composite and the main surface of the aluminum alloy tooth are connected by a metal welding method, and the welding interface is connected by the same metal, which can prevent the aluminum silicon carbide main surface from The main surface of the tooth part is peeled off, and the specific steps are as follows:

[0040] S1. Using a high-pressure forging method, the porous silicon carbide prefabricated body is soaked in the molten metal of aluminum alloy under high temperature and high pressure to obtain an aluminum-silicon carbide composite body;

[0041] Put the aluminum alloy in the crucible and heat it to 720-760°C, put the porous silicon carbide preform into the mold and heat it to 700-740°C; put the heated aluminum liquid crucible and the porous silicon carbide preform mold in the order of top and bottom In the high-pressure airtight equi...

Embodiment 1

[0053] Put an aluminum alloy containing 0.5% by mass of magnesium into a crucible and heat it to 720°C, put a porous silicon carbide preform with a volume ratio of 55% into a mold and heat it to 700°C; The silicon preform mold enters the high-pressure airtight equipment in the order of top and bottom, the infiltration pressure is controlled at 1Mpa, and the holding time is 30 minutes. After the mold is cooled, the aluminum-silicon carbide composite body with a thickness of 3mm is removed from the mold. , the average thickness of the aluminum alloy layer in the aluminum-silicon carbide composite is 50 μm, and the flatness of the welding surface of the aluminum-silicon carbide composite is less than 50 μm;

[0054] Select an aluminum alloy containing 0.5% by mass of magnesium, control the temperature of aluminum water smelting to 680°C, the mold temperature to 220°C, the injection pressure to 20Mpa, the pressure holding time to 10s, and mold cooling to obtain a die-cast aluminum ...

Embodiment 2

[0057] Put an aluminum alloy containing 0.8% by mass of magnesium into a crucible and heat it to 730°C, put a porous silicon carbide preform with a volume ratio of 58% into a mold and heat it to 705°C; The silicon prefabricated mold enters the high-pressure airtight equipment according to the upper and lower order, the infiltration pressure is controlled at 2Mpa, and the holding time is 35 minutes. After the mold is cooled, the aluminum-silicon carbide composite body with a thickness of 4mm is removed from the mold. , the average thickness of the aluminum alloy layer in the aluminum silicon carbide composite is 80 μm, and the flatness of the welding surface of the aluminum silicon carbide composite is less than 50 μm;

[0058] Select an aluminum alloy containing 0.8% by mass of magnesium, control the melting temperature of aluminum water to 690°C, the mold temperature to 230°C, the injection pressure to 22Mpa, the pressure holding time to 10s, and mold cooling to obtain a die-c...

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Abstract

The invention discloses a method for preparing an aluminum silicon carbide water-cooled gear plate. A high-pressure forging method is adopted to soak a porous silicon carbide prefabricated body in the molten metal of aluminum alloy under high temperature and high pressure, control the impregnation pressure and pressure holding time, and cool the After demolding, an aluminum-silicon carbide composite body with a thickness of 3 to 7 mm is obtained; aluminum alloys containing magnesium are selected, the temperature of aluminum melting and mold temperature are controlled, and aluminum alloy water-cooled tooth plates are prepared by high-pressure forging; the prepared aluminum alloys are welded The silicon carbide composite body is connected with the prepared aluminum alloy water-cooled tooth plate to form the aluminum silicon carbide water-cooled tooth plate. The present invention connects the tooth column and the aluminum silicon carbide composite plate base by welding, which solves the problem of missing teeth and broken teeth in the traditional process. The welding strength is high and the welding porosity is low, reflecting the superiority of the process of the present invention.

Description

technical field [0001] The invention belongs to the technical field of packaging substrates, and in particular relates to a method for preparing an aluminum silicon carbide water-cooled gear plate. Background technique [0002] At present, hybrid electric vehicles (HEV), rechargeable electric vehicles (PEV) and rail transit usually use motor-driven power modules and IGBT modules, which generate a lot of heat during operation. To cool these electronic power modules, the most effective method on the market is water cooling. The water-cooled tooth plate can transfer a large amount of heat from the power module to the cooling liquid in a highly efficient manner, thus forming an important part of the cooling cycle. [0003] At present, the aluminum silicon carbide water-cooled tooth plate is prepared by one-time integrated infiltration molding. This preparation process vacuum infiltrates the molten aluminum liquid into the porous silicon carbide plate in the mold and the mold ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/00B23P15/00B22D17/00B22D23/04
CPCB23P15/00B23K1/0008B22D23/04B22D17/00
Inventor 丁天昊何娟景文甲刘磊王鹏冲王津舵
Owner 珠海亿特立新材料有限公司
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