Device and method for preparing spherical metal powder

A metal powder and spherical technology, applied in the field of powder metallurgy, can solve the problems of wide particle size distribution of metal powder, large gas consumption and high production cost, and achieve the effects of uniform particles, high energy density and easy operation.

Inactive Publication Date: 2016-06-15
西安赛隆增材技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Among them, gas atomization uses high-speed airflow to break the liquid metal flow into small liquid droplets and solidify into powder. However, the metal powder prepared by gas atomization has a wide particle size distribution, and there are many hollow powders and satellite particles. The equipment is huge. Large gas consumption and high production cost
[0005] The centrifugal atomization method is to use the centrifugal force generated by the rotation to throw out the molten liquid droplets and condense them to obtain a spherical powder. There are mainly plasma rotating electrode atomization and rotating disc atomization powder making technologies. The front end of the high-speed rotating metal rod melts, and then rely on the centrifugal force of...

Method used

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  • Device and method for preparing spherical metal powder
  • Device and method for preparing spherical metal powder

Examples

Experimental program
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Effect test

Embodiment 1

[0071] A method for preparing spherical metal powder using the device, comprising the following steps:

[0072] Step 1. First, degrease the molybdenum alloy bar with a diameter of 30 mm and a length of 300 mm with a detergent, and perform surface treatment to remove impurities with absolute ethanol; then pass the metal bar through the pulverizing furnace body The center position of the top and the dynamic seal arranged at the center position of the top, so that a part of the metal bar is located outside the pulverizing furnace body, forming a connection end, so that the other part of the metal bar is located at the The inside of the pulverizing furnace body is described as a free end, and the connection end is fixedly connected with the rotary feed mechanism to drive the rotary feed mechanism. The rotating speed of the rotary feed mechanism is 80r / min, and the feed speed is 5mm / s, the metal bar is rotated at a constant speed and inserted into the pulverizing furnace body;

[...

Embodiment 2

[0078] A method for preparing spherical metal powder using the device, comprising the following steps:

[0079] Step 1. First, degrease the niobium metal bar with a diameter of 60 mm and a length of 1000 mm with a detergent, and perform surface treatment to remove impurities with absolute ethanol; then pass the metal bar through the pulverizing furnace body The center position of the top and the dynamic seal arranged at the center position of the top, so that a part of the metal bar is located outside the pulverizing furnace body, forming a connection end, so that the other part of the metal bar is located at the The inside of the powder-making furnace body is described as a free end, and the connection end is fixedly connected with the rotary feed mechanism, and the rotary feed mechanism is driven. The rotating speed of the rotary feed mechanism is 70r / min, and the feed speed is 3mm / s, the metal bar is rotated at a constant speed and inserted into the pulverizing furnace body...

Embodiment 3

[0085] A method for preparing spherical metal powder using the device, comprising the following steps:

[0086] Step 1. First, degrease the superalloy metal bar with a diameter of 80 mm and a length of 2000 mm with a detergent, and perform surface treatment with absolute ethanol to remove impurities; then pass the metal bar through the pulverizing furnace The center position of the top of the body and the dynamic seal arranged at the center position of the top, so that a part of the metal bar is located outside the pulverizing furnace body, forming a connection end, so that the other part of the metal bar is located The inside of the powder-making furnace body forms a free end, and the connection end is fixedly connected with the rotary feed mechanism to drive the rotary feed mechanism. The rotating speed of the rotary feed mechanism is 60r / min, and the feed speed 2mm / s, the metal bar is rotated at a constant speed and inserted into the pulverizing furnace body;

[0087] Step...

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Abstract

The invention belongs to the technical field of powder metallurgy, and particularly relates to a device and method for preparing spherical metal powder. The device comprises a metal bar, at least one plasma gun and a rotating disk; the metal bar is arranged in the center of the top of a furnace for preparing powder; the plasma guns are arranged around the metal bar, and predetermined angles are formed between the plasma guns and the metal bar; the rotating disk is arranged under the metal bar; the furnace for preparing the powder is filled with inert gas. According to the preparation method, plasma arcs generated by the plasma guns are adopted to melt the metal bar, generated metal droplets fall on the rotating disk rotating at a high speed, the metal droplets are thrown out and scattered through centrifugal force, and the metal powder with the fine particle size is formed after the metal droplets are cooled. According to the device and method for preparing the spherical metal powder, the structure is simple, the running cost and energy consumption are low, and the spherical metal powder prepared through the method is high in degree of sphericity, fine in particle size and high in purity.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy, and in particular relates to a device and method for preparing spherical metal powder. Background technique [0002] High-quality spherical metal powder is an important raw material necessary for the production fields of powder metallurgy near net shape, injection molding, thermal spraying, 3D printing and electronic packaging, and is an important basis for the quality of the final product. With the rapid development of injection molding, thermal spraying, 3D printing and other technologies, the performance requirements for the particle size, purity and shape of metal powder raw materials in the above fields have gradually increased, and the powder preparation has been promoted to high purity, narrow particle size distribution and Development in the direction of low cost. [0003] At present, the preparation of spherical metal powder mainly adopts atomization technology, including gas ...

Claims

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Application Information

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IPC IPC(8): B22F9/10B22F1/00
CPCB22F9/10B22F2999/00B22F1/065B22F2201/10
Inventor 贺卫卫陈斌科向长淑朱纪磊凤治华王超黄瑜苏腾飞
Owner 西安赛隆增材技术股份有限公司
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