A stirring device for preparing metal matrix composite materials

Abstract

The invention discloses a stirring device for preparing a metal matrix composite material, which comprises a stirring container, a stirring shaft and a stirring blade. The stirring container has an inner chamber for storing melt, and the inner chamber includes a bottom section with a concave arc surface, and The middle section that is tangent to the top of the bottom section, the diameter of the middle section is gradually reduced; the stirring blade includes a first surface, a second surface and a third surface, the first surface and the second surface are parallel to the axis, and the third surface is respectively connected to the second surface. One side and the second side are obliquely intersected, the first side and the second side intersect at the first side, the first side also includes the second side at the bottom of the first side, the intersection line of the third side and the first side The two ends are respectively located on the first side and the second side, and the angle between the intersection line of the third surface and the second surface and the first side is 30°-60°. The invention can obtain that the melt can generate enough axial flow, thereby reducing the stagnation zone above the stirring blade and the stagnation zone below the stirring blade, so as to ensure uniform stirring of the slurry.

Description

technical field [0001] The invention relates to the field of preparation of metal matrix composite materials, in particular to a stirring device for stirring metal matrix composite material slurry. Background technique [0002] Metal matrix composites use aluminum, magnesium, iron and other metals or alloys as the matrix, and add particles, whiskers, fibers and other reinforcement phases to achieve the purpose of designing material composition and improving material properties. The common reinforcement phase is ceramic phase particles. Mainly, such as SiC, B4C, etc. The preparation methods of metal matrix composites include powder metallurgy, pressure / no pressure infiltration, in-situ chemical reaction synthesis and liquid stirring method, etc. Due to the limited application of the difficult method, the liquid stirring method has gradually been deeply researched and applied because of its short process flow, low cost and strong versatility. [0003] However, due to the hig...

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Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a stirring device for preparing metal matrix composite materials, which is used to solve the problem that the stirring blades in the prior art are difficult to generate sufficient axial liquid flow and affect the stirring effect of the slurry

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