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Preparation method of metal base nanometer composite powder material for added material manufacturing

A nanocomposite powder and additive manufacturing technology, applied in metal processing equipment, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as unfavorable large-scale preparation, increased melt viscosity, and complex processes , to achieve the effect of controlling harmful interface reactions, good fluidity, and fast combination

Inactive Publication Date: 2018-05-11
BEIJING COMPO ADVANCED TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the external method, the in-situ reaction method has a uniform distribution of the reinforced phase and a clean interface, but the process has strict requirements, and the size and volume fraction of the reinforced phase are not easy to control
In addition, too fine particles will increase the melt viscosity, which is not conducive to the subsequent powder preparation
There are also reports in foreign countries that electrostatic assembly is used to prepare nanocomposite powders, but the process is relatively complicated, which is not conducive to large-scale preparation.

Method used

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  • Preparation method of metal base nanometer composite powder material for added material manufacturing

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Experimental program
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Effect test

Embodiment 1

[0036] Adopt the following steps to prepare TiB2 / A356 aluminum-based composite powder:

[0037] Step 1: Take the metal material and put it into an intermediate frequency induction furnace for alloy melting;

[0038] Step 2: Put the nano-reinforced particles into the powder storage tank, the powder storage tank is connected with the high-pressure intake pipe, and the nano-reinforced particles are sent into the intake pipe through the delivery device;

[0039] Step 3: Turn on the high-pressure gas, and the air flow passes through the powder storage tank to carry nano-enhanced particles to form a solid-gas two-phase flow. Ultrasonic vibration is applied to the intake pipe to promote the uniform dispersion of nano-reinforced particles;

[0040] Step 4: After the high-pressure gas-solid two-phase flow passes through the atomizer, the molten metal flow is broken to form fine droplets carrying nano-reinforced particles, which are then spheroidized and solidified into powder.

[0041]...

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Abstract

The invention relates to a preparation method of a metal base nanometer composite powder material for added material manufacturing, and belongs to the technical field of preparation of metal powder. Nanometer reinforcing particles are introduced in the atomization powder preparation process, so that atomization powder preparation and nanometer particle reinforcement are synchronously finished to realize metallurgical bonding of a basal body and nanometer particles. Compared with the prior art, the method can efficiently prepare the nanometer composite powder material with high sphericity and good fluidity, and is more suitable for industrial preparation of the composite powder material for added material manufacturing.

Description

technical field [0001] The invention belongs to the technical field of powder material preparation, and in particular relates to a method for preparing a metal-based nanocomposite powder material for additive manufacturing. Background technique [0002] Metal matrix composites refer to a material with metal as a continuum formed by combining two or more materials with different physical and chemical properties by using composite technology. According to the different reinforcing phases added to the metal matrix, it can be roughly divided into particle, whisker and long fiber reinforced composites. Compared with traditional matrix alloys, composite materials have the characteristics of high specific strength and specific stiffness, excellent high-temperature mechanical properties, and good wear resistance. They have very broad application prospects in aerospace, automotive, electronics, and transportation industries. Among them, particle-reinforced composite materials have s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B22F1/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/082B22F2009/0824B22F1/054
Inventor 张少明贺会军张金辉赵新明赵文东袁国良盛艳伟朱学新刘英杰郑明月刘建王志刚安宁
Owner BEIJING COMPO ADVANCED TECH
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