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Method and apparatus for preparing aluminium base composite materials under high magnetic field

An aluminum-based composite material and a technology for preparing devices, which are applied in the field of metal-based composite materials, can solve the problems that hinder the development and wide application of metal-based composite materials, uneven distribution of reinforced particles, and low alignment coefficient of reinforced materials, so as to promote crystallization Orientation effect, improvement of density segregation, effect of improving overall performance

Inactive Publication Date: 2004-04-21
NORTHEASTERN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, in the process of preparing metal matrix composites by liquid metal casting, the reinforcement particles are unevenly distributed in the metal matrix due to the deposition, floating and agglomeration of reinforcement particles; Into a disordered and disordered distribution state, resulting in a low alignment coefficient of the reinforcement material
These problems are precisely the key to improving the comprehensive performance of metal matrix composites, and they seriously hinder the further development and wide application of metal matrix composites.

Method used

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  • Method and apparatus for preparing aluminium base composite materials under high magnetic field
  • Method and apparatus for preparing aluminium base composite materials under high magnetic field
  • Method and apparatus for preparing aluminium base composite materials under high magnetic field

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Embodiment Construction

[0011] The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing: figure 1 Among them, the composition of its device is divided into upper and lower parts, the upper part consists of a metal bag (1), a resistance heating or induction heating system (2), and a thermocouple (3) (purchased in the market) is fixed in the vacuum chamber (13) through a sealing ring. On the outer wall, the heating system (2) is surrounded by a copper stirring coil (5) or a mechanical stirrer is installed in the metal bag (1), and the reinforcing body delivery pipe (4) is fixed in the vacuum chamber (13 ) on the outer wall; the fixed mold (9) of the lower part is fixed on the support (10), and a thermocouple (3) is installed in the fixed mold (9), and the outer wall is covered with thermal insulation material (11). Acid aluminum fiber, the thickness of the insulation layer is 25mm. Between the fixed casting mold (9) and the strong magnetic ...

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Abstract

A process for preparing the Al-base composition under strong magnetic field includes such steps as heating Al to 850 deg.C, holding the temp for 30 min, adding reinforcing Al2O3 particles (or short fibres), stirring, pouring in mould, solidifying for 20 min strong magnetic field system and cooling in air. Its equipment is composed of metallic ladle, heating system, thermoelectric couple, reinforcing material delivering pipe, stirring coil, casting mould, supporter, slide sprue, vacuum chamber or protecting gas chamber, and the strong magnetic field control system consisting of strong magnetic field genrator, cooling water pipe, alarm and temp control unit and insulating layer.

Description

technical field [0001] The invention relates to metal-based composite materials, in particular to a preparation method and device for high-performance aluminum-based composite materials. Background technique [0002] Metal matrix composites have both the performance characteristics of metals and reinforced materials, and have good comprehensive properties. They are materials with broad application prospects in some industrial fields such as outer space structures and automobile manufacturing. Due to the late research on metal matrix composites, in general, most of the preparation technology of metal matrix composites is still in the laboratory research stage, and only a small part has achieved industrialization. At present, in the production of whisker (short fiber) and particle-reinforced metal matrix composites, production processes such as powder metallurgy, stirred casting, pressure impregnation, co-spray deposition and in-situ generation have been developed. Among them...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/00C22C49/06
Inventor 王强赫冀成王恩刚
Owner NORTHEASTERN UNIV
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