Pressure infiltration preparation device and preparation method for aluminum matrix composite

A technology of an aluminum matrix composite material and a preparation device, which is applied in the field of metal matrix composite material preparation, can solve the problem that a single furnace tube vacuum resistance furnace cannot realize the stable preparation of multiple composite materials, cannot achieve the same simultaneous preparation of reinforcement, and reduces the preparation efficiency of composite materials. and other problems to achieve the effect of reducing hole defects, improving performance and quality, and improving vacuum degree

Inactive Publication Date: 2020-05-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1) The stable preparation of multiple composite materials cannot be achieved by using a single furnace tube vacuum resistance furnace, which leads to the performance difference of the composite materials;
[0006] 2) Simultaneous preparation of composite materials with different reinforcement phases (particles, fibers) cannot be realized, which reduces the preparation efficiency of composite materials

Method used

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  • Pressure infiltration preparation device and preparation method for aluminum matrix composite
  • Pressure infiltration preparation device and preparation method for aluminum matrix composite
  • Pressure infiltration preparation device and preparation method for aluminum matrix composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of aluminum matrix composite material pressure impregnation preparation device of this embodiment, its overall structure schematic diagram is as follows figure 1 shown. It includes a frame 1, four lifting mechanisms 2, a resistance furnace 3, an infiltration pressure control system, a vacuum control system and an electric control cabinet 4. Each lifting mechanism can be lifted into the resistance furnace 3 through an independent furnace tube 5. A crucible support 6 is arranged at the upper end of the lifting mechanism, and a stainless steel crucible 7 is placed at the upper end of the crucible support 6; the structural diagram of the lifting mechanism is as follows figure 2 As shown, the lifting mechanism realizes sliding connection with the guide rail 2-1 through the slider 2-2, the crucible support includes a support rod 6-3 and a sleeve 6-2, the support rod 6-3 is connected to the slider 2-2, and the sleeve is built in Insert the refractory brick 6-4, place ...

Embodiment 2

[0038] Adopt the device of embodiment 1 to prepare SiC p Reinforced aluminum-based composite materials, including the following steps and process conditions:

[0039] (1) SiC with a particle size of 90 μm p Add industrial starch and silica sol and stir evenly, SiC p , industrial starch and silica sol volume fractions were 70%, 20% and 10%. SiC with a size of Φ30mm×80mm was produced by compression molding p Prefabricated body, sintered at 900°C to obtain SiC p Preform;

[0040] (2) Put SiC in four stainless steel crucibles p The prefabricated body and AlSi12 alloy, the stainless steel crucible is lifted into the inner furnace tube of the resistance furnace through the lifting mechanism, and the furnace tube is sealed;

[0041] (3) Turn on the vacuum pump to extract the air inside the furnace tube of the resistance furnace, so that the vacuum degree in the furnace tube reaches 70Pa;

[0042] (4) Control the temperature of the resistance furnace to 750°C through the electr...

Embodiment 3

[0047]Adopt the device of embodiment 1 to prepare SiC p and B 4 C p Reinforced aluminum-based composite materials, including the following steps and process conditions:

[0048] (1) SiC with a particle size of 50 μm, respectively p and B 4 C p Add industrial starch and silica sol and stir evenly, the volume fractions of reinforcing phase, industrial starch and silica sol are 70%, 20% and 10% respectively. SiC with a size of Φ30mm×80mm was produced by compression molding p and B 4 C p Prefabricated body, sintered at 900°C to obtain SiC p and B 4 C p Preform;

[0049] (2) Put SiC in No. 1 and No. 2 stainless steel crucibles p Preform and A356 alloy, put B in No. 3 and No. 4 stainless steel crucibles 4 C p For the prefabricated body and the A356 alloy, four stainless steel crucibles are lifted into the corresponding furnace tubes of the resistance furnace through the lifting mechanism, and the furnace tubes are sealed;

[0050] (3) Turn on the vacuum pump to extrac...

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Abstract

The invention belongs to the field of metal matrix composite preparation, and discloses a pressure infiltration preparation device and preparation method for an aluminum matrix composite. The device comprises a rack, multiple lifting mechanisms, a resistance furnace, an infiltration pressure control system, a vacuum control system and an electric control machine box, and each lifting mechanism canascend into the resistance furnace through an independent furnace pipe. The device adopts the multiple furnace pipes, the use rate of inner space of a hearth of the resistance furnace is improved, the preparation efficiency of the composite is improved, multiple composite samples are prepared at the same time under the same conditions, stability of composite preparation is improved, and consistency of composite performance is guaranteed. Simultaneous preparation of different pressure infiltrations can be achieved in the different furnace pipes according to needs.

Description

technical field [0001] The invention belongs to the field of metal matrix composite material preparation, and in particular relates to an aluminum matrix composite material pressure impregnation preparation device and a preparation method. Background technique [0002] Particle or fiber reinforced aluminum matrix composites have the advantages of low density, high specific stiffness, high specific strength, high dimensional stability and good formability, and can be obtained by controlling the type, size and content of reinforcing particles or fibers. Different properties are the most promising in metal matrix composites. At present, the composite material is mainly used in electronic packaging materials, aerospace materials and other fields. [0003] The preparation methods of aluminum matrix composites mainly include powder metallurgy, stirred casting, vacuum pressure infiltration and so on. Among them, the vacuum pressure infiltration method can prepare aluminum matrix ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/12C22C1/10C22C1/02C22C21/00C22C49/06C22C101/14
CPCC22C47/12C22C49/06C22C1/1036C22C21/00C22C1/1073
Inventor 赵海东刘锐哲
Owner SOUTH CHINA UNIV OF TECH
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