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A method for additive manufacturing of metal-based particle-reinforced components

A technology of particle enhancement and additive manufacturing, applied in the direction of additive processing, etc., can solve the problems of unfavorable forming, low temperature, low viscosity, etc., achieve the effect of controlling flow and forming, and solving the problem of poor combination

Active Publication Date: 2018-11-02
广东空天科技研究院
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  • Description
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Problems solved by technology

The main problem with this method is that for many commonly used alloys, the difference of ±1°C is enough to change the solid phase fraction of the melt, resulting in a change in viscosity. Low temperature and high viscosity are beneficial to forming, but not conducive to layer formation. Inter-bonding; high temperature and low viscosity are conducive to inter-layer bonding, but not conducive to forming

Method used

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  • A method for additive manufacturing of metal-based particle-reinforced components
  • A method for additive manufacturing of metal-based particle-reinforced components

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Embodiment 1

[0019] Embodiment 1: see figure 1 , figure 2 , a method for additive manufacturing of metal-based particle reinforced components, comprising the following steps:

[0020] A. Metal aluminum is melted in a crucible with a nozzle at the bottom, and the heating method is resistance heating; and the temperature is kept above 660°C, and TiC ceramic particles with a particle size of 10 μm that do not chemically react with metal aluminum are added to it, ceramic particles The mass ratio to aluminum is 1:4, and the ceramic particles are evenly distributed in the metal aluminum melt by mechanical stirring, and the metal melting is protected by inert gas;

[0021] B. Set a horizontal base plate and its control equipment for three-dimensional movement under the nozzle. The inner diameter of the nozzle is 2mm, and the distance between the nozzle and the horizontal base plate is 10mm;

[0022] C. Set a predetermined program in the horizontal substrate control device to control the direct...

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Abstract

The invention discloses an additive manufacturing method for a metal-based particle reinforced member. The method includes the steps that metal is melted in a crucible with a nozzle at the bottom, and then ceramic particles are added; a horizontal base plate which can make three-dimensional movement is arranged, and a control program of the horizontal base plate is set; and certain pressure is applied to enable metal melt containing the ceramic particles to flow out from the nozzle, the melt is solidified layer by layer, and the layers of melt are stacked to form a product. According to the method, the ceramic particles which do not chemically react with the metal melt are added, the viscosity of the melt is controlled through the size and volume fraction of the ceramic particles, the purpose of controlling flowing and forming is achieved, and the problems that in the prior art, interlayer bonding is poor, and forming is affected are solved; and the additive manufacturing method is a novel method for preparing the metal-based particle reinforced member.

Description

technical field [0001] The invention belongs to the technical field of metal additive manufacturing, and in particular relates to an additive manufacturing method for metal-based particle reinforced components. Background technique [0002] The invention patent "Moving Micro-die-casting Molding Method for Metal Components" (application number: CN201310139419) discloses a moldless forming method, which is characterized in that the refined metal melt is continuously extruded from the outlet (nozzle) at the bottom of the crucible, and the bottom of the nozzle is about A few hundred microns is a horizontal substrate that can move x-y-z three-dimensionally. The melt solidifies in the narrow space formed by the nozzle and the substrate while shearing and moving with the substrate. With the support of the three-dimensional forming manufacturing software, the melt solidifies and accumulates layer by layer. No mold required. The key to this method is that there is a narrow semi-open...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/115B33Y10/00
CPCB22F3/115B33Y10/00
Inventor 李正阳彭爽蒋华臻
Owner 广东空天科技研究院
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