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Preparation method and device of ceramic particle reinforced metal matrix composite powder

A metal-matrix composite and ceramic particle technology, which is applied in the field of ceramic particle-reinforced metal-matrix composite powder preparation, can solve the problems of limited types of reinforced particles, restricted applications, and harsh reaction conditions, so as to avoid physical damage, improve product mechanical properties, Simple operation effect

Inactive Publication Date: 2016-04-20
石京
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Problems solved by technology

Compared with the method of mechanical mixing to produce metal-based composite powders, the in-situ reaction method can obtain a more uniform distribution of reinforced particles, but it often requires harsh reaction conditions (such as high temperature and high pressure, etc.), and can be obtained by in-situ reaction The types of strengthening particles are also very limited, which limits the industrial application of such methods

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  • Preparation method and device of ceramic particle reinforced metal matrix composite powder

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Embodiment Construction

[0020] A method for preparing ceramic particle-reinforced metal-matrix composite powder, comprising the following steps:

[0021] 1. Put the metal matrix raw material into the high-frequency induction furnace 1, and add a set mass fraction of ceramic particle reinforcement. The metal matrix raw material can be any metal material that can be atomized, and its melting point should be lower than 1500°C;

[0022] 2. Vacuumize the high-frequency induction furnace 1, aerosol tank 5, and powder collection tank 9 in the gas atomization equipment to less than 1×10 -4 Pa, then fill the high-purity inert gas argon or helium and maintain the internal pressure of the equipment at 0.1-0.5MPa;

[0023] 3. Turn on the high-frequency induction furnace 1. The typical power of the furnace is 20-200KW. The high-frequency magnetic field generated by the high-frequency coil can quickly heat the raw materials in the high-frequency induction furnace 1. After the raw materials are melted, the temperat...

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Abstract

The invention discloses a preparation method of ceramic particle reinforced metal matrix composite powder. A metal matrix and a ceramic particle reinforced raw material are put in a high-frequency inductive smelting furnace for smelting; ceramic reinforced particles are uniformly distributed in molten metal by an ultrasonic generator; a valve at the bottom of the high-frequency inductive smelting furnace is opened; the molten metal freely drops down; inert gas sprayed out from a high-pressure airflow nozzle crushes the molten metal to form spherical metal droplets; and the spherical metal droplets drop into a powder collecting tank after cooling and solidification. The preparation device comprises the high-frequency inductive smelting furnace and an aerosol can; the high-frequency inductive smelting furnace and the ultrasonic generator are arranged in the top center of the aerosol can; the ultrasonic generator is mounted on the side wall of the high-frequency inductive smelting furnace, and is connected with an amplitude transformer; and the bottom of the aerosol canis connected with the collecting tank. The metal matrix composite powder with uniformly distributed reinforced particles can be obtained by metal aerosol melting and ultrasonic stirring; and the preparation device is simple in operation and low in cost, and can effectively prevent physical damage to the matrix powder or the reinforced particles in the powder preparation process.

Description

technical field [0001] The invention relates to the preparation of metal-matrix composite materials, in particular to a preparation method and device for metal-matrix composite powder reinforced with ceramic particles. Background technique [0002] Metal matrix composites have a series of excellent physical properties, such as high specific strength, high stiffness, low thermal expansion coefficient, low cost and so on. These excellent properties make metal matrix composites have many application prospects in the fields of automobile, aviation and military. In the past few decades, thanks to the rapid development of nanomaterials and advanced manufacturing processes, the performance of metal matrix composites has been greatly improved. In this context, how to efficiently produce metal matrix composite powders has attracted more and more attention, because powder metallurgy is one of the main methods for manufacturing metal parts, especially with the rapid development of las...

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Application Information

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IPC IPC(8): B22F9/08
CPCB22F9/08
Inventor 王亚超石京
Owner 石京
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