A stirring method for preparing a crucible for particle reinforced metal matrix composites

Abstract

The invention relates to a crucible for preparing a particle reinforced metal base composite material by a stirring method. The crucible comprises a middle disc (1), an outer pack (2), a crucible body (3) and an inner pack (4). A groove and a thread blind hole are formed in the middle disc (1), are sealed by packs and stirring devices, are provided with cooling water ways and air ways inside for exhausting and supplying air to the crucible body (3), and are provided with positioning blocks on the outer edges for realizing horizontal positioning with the crucible body (3); the crucible body (3) is convenient for production and manufacturing; the disc is provided with the groove and the thread blind hole; and the outer pack (2), the inner pack (4) and the middle disc (1) are used for sealing. The middle disc (1), the outer pack (2), the crucible body (3) and the inner pack (4) realize axial pressing through external weight and tightening force. The air way in the middle disc (1) can blow air to clean particles attached on the inner wall of the crucible body (3) and a stirrer; and the cooling water way is positioned in the middle disc (1) for preventing transfer of the temperature to a stirring device and performing effective cooling in hot air exhausting.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and in particular relates to a crucible for preparing particle-reinforced metal-matrix composite materials by a stirring method, and is particularly suitable for the preparation of particle-reinforced aluminum-matrix composite materials and the vacuum air-pressure casting technology thereof. Background technique [0002] Metal Matrix Composites (MMC) appeared in the late 1970s, because of its good specific strength, specific stiffness, high temperature strength, wear resistance, corrosion resistance and other comprehensive mechanical properties, more flexible designability , has been rapidly developed and applied. Particle-reinforced metal matrix composites, especially SiCp / Al composites, have good economics and become the most studied metal matrix composites. The more mature preparation methods of SiCp / Al composite materials include: powder metallurgy method, stirring casting metho...

AI Technical Summary

Problems solved by technology

[0008] The technology to be solved by the patent of the present invention is that during the preparation process of particle-reinforced metal matrix composites, particle powder sticks to the inner wall of the crucible and the surface of the agitator and is difficult to remove. Problems such as rising, alloy liquid overflow during vacuuming, and high crucible replacement and maintenance costs, provide a crucible for preparing particle-reinforced metal matrix composites by stirring method

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