3D printing metal powder and preparation method thereof

A metal powder, 3D printing technology, used in metal processing equipment, transportation and packaging, additive processing, etc., can solve the problems of low oxygen content, residual pores in parts, and high powder sphericity

Inactive Publication Date: 2019-03-19
安徽恒利增材制造科技有限公司
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  • Abstract
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Problems solved by technology

At present, the preparation methods of metal powder for 3D printing mainly include atomization method, plasma method, rotating electrode method, plasma fuse method, etc. Among them, the atomization method has the advantages of low environmental pollution, high powder sphericity, and low oxygen content. And the advantages of large cooling rate have become the main method for producing high-performance spherical metal and alloy powders, but the inventors found in the process of pr

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  • 3D printing metal powder and preparation method thereof
  • 3D printing metal powder and preparation method thereof
  • 3D printing metal powder and preparation method thereof

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific examples.

[0021] In order to improve the bulk density of the metal powder, the compactness and mechanical strength of the printed product, the embodiment of the present invention provides a 3D printing metal powder, the powder includes titanium alloy powder with a particle size of 25-45 μm, and titanium alloy powder with a particle size of 40-65 μm. Nickel powder and chromium powder with a particle diameter of 60-85 μm, wherein titanium alloy powder accounts for 30-60 wt.%, nickel powder accounts for 15-30 wt.%, and chromium powder accounts for 10-25 wt.%.

[0022] In some optional embodiments, the embodiment of the present invention specifically provides a 3D printing metal powder, which includes titanium alloy powder with a particle size of 25-45 μm, nickel powder with a particle ...

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Abstract

The invention discloses 3D printing metal powder and a preparation method thereof and relates to the technical field of metal materials. The 3D printing metal powder disclosed by the invention adoptstitanium alloy powder, nickel powder and chromium powder which are different in particle size and proportion as raw materials; ultrasonic water atomization is adopted for preparing the metal powder; the high frequency of ultrasound is beneficial for achieving a cavatition effect in molten metal so that the molten metal is uniformly split into small liquid drops; the preparation method is combinedwith a water atomization method; on one hand, the relatively large specific heat capacity and the high cooling speed of water are beneficial for industrial large-scale production; on the other hand, water is used as a medium, which is beneficial for reducing the generation rate of hollow powder and satellite powder; the prepared powder is good in compression formability; the strength of a printedfinished product is enhanced; meanwhile the final annealing treatment reduces the oxidization effect of oxygen in water to metals; and the overall preparation method is simple and is low in energy consumption.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a 3D printing metal powder and a preparation method thereof. Background technique [0002] 3D printing, also known as rapid prototyping, has attracted people's attention since its appearance, and 3D printing materials that determine the quality of 3D printed products have also received widespread attention. At present, the raw materials used in 3D printing materials according to the different printed products mainly include polymer materials, metal materials, ceramic materials, etc. Since metal materials have special properties and gloss that cannot be compared with other materials, the printed products are used in automobiles, molds, Energy, aerospace and other industries have broad application prospects. [0003] The metal raw materials commonly used in 3D printing are divided into powder form and wire form. Since metal powder can be used in selective laser melting (Se...

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Application Information

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IPC IPC(8): B22F1/00B22F9/08C22C14/00C22C30/00B33Y70/00
CPCC22C14/00C22C30/00B22F9/082B33Y70/00B22F1/052B22F1/142
Inventor 夏建强徐宏
Owner 安徽恒利增材制造科技有限公司
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