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A metal material for 3D printing and its preparation method and use method

A 3D printing and metal material technology, applied in the field of metal materials, can solve the problems of poor applicability, high printing cost, large material consumption, etc., and achieve the effect of saving cost and energy consumption

Active Publication Date: 2019-06-11
BEIJING DREAM INK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, an object of the present invention is to propose a metal material for 3D printing to make up for the problems of high printing cost, large material consumption, unsafe high-temperature heating and poor applicability in the prior art.

Method used

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preparation example Construction

[0024] The invention discloses a method for preparing a metal material for 3D printing, comprising: uniformly mixing a low melting point metal with a melting point below 30 degrees Celsius and a metal powder with a melting point above 1000 degrees Celsius for a period of time in a certain proportion; A variety of ways to make low-melting point metals react with some metal powders to generate new alloy reactants, wherein the melting point of the alloy reactants is higher than 30 degrees Celsius; after the above mixing, it can be obtained. Low melting point metals below 30 degrees Celsius, metal powders with melting points above 1000 degrees Celsius, and viscous liquid metal mixtures of alloy reactants of the two are used as metal materials for 3D printing; the metal mixture is formed after a period of time at room temperature The liquid state turns itself into a solid state.

[0025] During the printing and solidification process of the metal material for 3D printing, because i...

Embodiment 1

[0043] The metal material for 3D printing in this embodiment, the low melting point metal is gallium indium alloy, the mass fraction of each component of the alloy is: Ga 78.5%, In 21.5%, the metal powder is iron powder, and the mass fraction is the total mass of the metal material for 3D printing The content is 17%, and the particle size is 0.5-1 μm.

[0044] Simply mix the gallium-indium alloy and iron powder, put it into a ball mill jar, fill it with argon to 1.1 times the atmospheric pressure of the environment, and perform ball milling at a speed of 1000 rpm, and mix well for 15 minutes.

[0045] The obtained metal material for 3D printing is in a liquid state with a certain viscosity. It is taken out from the ball mill tank, quickly placed in a container filled with argon to 1.3 times the ambient atmospheric pressure, and stored in a freezer at -35°C.

[0046] When it needs to be used, take the metal material for 3D printing out of the freezing environment, thaw it in an...

Embodiment 2

[0048] The metal material for 3D printing in this embodiment, the low melting point metal is gallium indium alloy, the mass fraction of each component of the alloy is: Ga 84%, In 16%; the metal powder is nickel powder, and the mass fraction of nickel powder is the metal material for 3D printing 15%-20% of the total mass, the particle size is 10μm.

[0049] The gallium-indium alloy and nickel powder were briefly mixed, put into a ball mill jar, vacuumed to 0.6 kPa, ball milled at a speed of 800 rpm, and mixed uniformly for 0.5 hour.

[0050] The obtained room-temperature self-curing metal material for 3D printing is in the form of a paste, which is taken out from the ball mill jar, quickly placed in a container evacuated to 0.8 kPa, and stored at -30°C.

[0051] When it needs to be used, take the metal material for 3D printing out of the frozen environment, use an ultrasonic device or thaw it in an environment not higher than 80 degrees Celsius for 15 minutes and restore it to ...

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PUM

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Abstract

The invention proposes a metal material for 3D printing and its preparation method and use method. The preparation method includes: uniformly mixing a low-melting point metal or alloy with metal powder in a certain proportion for a period of time; during the mixing process, making the low-melting point metal Or the alloy reacts with the metal powder part, and it is frozen and stored in an argon-filled or vacuum environment. A room temperature self-curing metal material for 3D printing of the present invention can be in a liquid state or a paste state at room temperature, and can be extruded by a 3D printer without energy sources such as lasers, electron beams, or electric arcs for high-temperature sintering and melting. Self-curing is achieved through alloy reaction at room temperature, reducing the cost and energy consumption of 3D printing equipment.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a metal material for 3D printing, a preparation method and a use method thereof. Background technique [0002] 3D printing technology belongs to advanced additive manufacturing technology. It is a manufacturing method based on the idea of ​​calculus, layered scanning and superposition molding. In recent years, the 3D printing technologies of metal alloy materials that have been successfully researched and have certain practical applications mainly include: selected laser sintering (SLS) technology, selected laser melting (SLM) technology, laser melting deposition (LMD) technology and electron beam selective melting (EBSM) technology. ) technology, etc. The materials used in these technologies are special metal alloy powders, which are sintered or melted layer by layer by laser or electron beam and then formed. There are also some institutions researching and applying w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F9/04B22F3/00B33Y70/00B33Y10/00B22F10/10
CPCB22F1/0003B22F9/04B33Y10/00B33Y70/00B22F2009/043B22F2009/041B22F10/00B22F10/22B22F10/34B22F10/20Y02P10/25
Inventor 曹宇白安洋董仕晋于洋
Owner BEIJING DREAM INK TECH CO LTD
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