Equipment and method for separating irregular powder from spherical metal powder

A technology of metal powder and special-shaped powder, which is applied in the field of equipment for separating special-shaped powder from spherical metal powder, to achieve the effect of uniformity and quality improvement, and easy powder removal

Active Publication Date: 2017-09-05
SINO EURO MATERIALS TECH OF XIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the special-shaped particles that are closer to the size of the target range, direct screening cannot meet this requirement.

Method used

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  • Equipment and method for separating irregular powder from spherical metal powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take the 45-106 spherical titanium powder sample mixed with 30wt.% of <180μm-sized gravel as the sample to be tested, install 325 mesh screens on the upper and lower sides of the powder blowing pipeline and the air duct, and put the sample into the powder blowing pipeline of the equipment. The power of the fan is controlled at 100w, and the hinge is opened by 50%. The mass fraction of <180μm gravel in the collector is 3wt.%, and the separated sample is tested again to sieve the mass fraction of gravel <0.5wt.%. Up to 90%, to achieve good results.

Embodiment 2

[0042] Take the 106-180 size spherical titanium powder sample as the sample to be tested, and the proportion of non-spherical powder in the original sample is 1.51%. Install 200 mesh screens on the upper and lower sides of the powder blowing pipeline and the air duct respectively, and put the sample into the powder blowing tube On the road, the power of the fan is controlled at 130w, the hinge is opened by 30%, and the proportion of special-shaped powder obtained in the collector is 0.43%. The one-time removal rate reaches 72%, achieving a good separation effect.

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Abstract

Disclosed is equipment for separating irregular powder from spherical metal powder. A powder feeding tank body and a material tank body are arranged in a U-shaped tank. The material tank body is connected with a collector in the U-shaped tank. A net is arranged in the collector. The right end of the collector communicates with a powder blowing pipeline. The powder blowing pipeline is connected with an air duct. A net is arranged in the interior, on the right side of the U-shaped tank, of the powder blowing pipeline. The powder feeding tank is connected with the powder blowing pipeline. A draught fan is arranged in the powder blowing pipeline. A hinge valve is connected in the connecting position of the powder blowing pipeline and the air duct. A draught fan is arranged in the air duct. The air duct communicates with a top pipe opening of the collector. A separation method comprises the following steps that (1), screen nets are arranged, and the powder is located between the air duct screen net and the screen net at the bottom of the powder blowing pipeline; (2), samples enter from the powder feeding tank to the bottom of the powder blowing pipeline; (3), the draught fans are adjusted, and powder particles are layered in the powder blowing pipeline; (4), suction force of the collector is controlled by the hinge valve; and (5), after separating, the uniform and fine spherical metal powder is obtained in the material tank. The removal rate of sample separation at a time can reach 70%, and the irregular powder can be effectively separated from the spherical metal powder.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy industry, in particular to a device and method for separating special-shaped powder from spherical metal powder. Background technique [0002] Spherical metal powder is a common raw material used in metal injection molding, hot isostatic pressing, and laser / electron beam rapid prototyping. These technologies require spherical metal to have high fluidity to meet sufficient filling capacity, filling capacity, and Uniformity required for laying powder etc. If the fluidity is poor, defects of insufficient filling will be left in the above-mentioned filling, filling, and powder spreading, and holes will be formed after sintering, which requires the raw material to have extremely high fluidity. The main reason for the decrease in fluidity is that there are lumps, slag, flakes, strips, satellite powder and other special-shaped particles in the powder that are basically the same size as the pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B9/00B07B11/02B07B11/04B07B1/04
CPCB07B1/04B07B9/00B07B11/02B07B11/04
Inventor 刘洋韩志宇王庆相梁书锦张平祥
Owner SINO EURO MATERIALS TECH OF XIAN CO LTD
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