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All-in-one machine and preparation method for preparing low-oxygen metal powder

A metal powder, all-in-one technology, applied in the field of metal powder processing, can solve the problems of inability to remove, long process dispersion process, backward equipment, etc., to achieve the effect of facilitating automatic control, solving oxidation phenomenon, and ensuring sealing

Inactive Publication Date: 2019-02-15
XIAN JIAYE AVIATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment mainly uses the laser optical system and the high-frequency vibration device to powder the metal rod, but the oxide layer on the surface of the metal rod keeps oxygen in the metal powder and cannot be removed. These oxidized metal powders will have a certain impact on the performance of the product. Impact
[0006] At present, in the process of metal powder processing, the process of hydrogenation, pulverization, dehydrogenation and re-pulverization of metal raw materials is required, but the powder production line equipment used now is backward, the process is scattered and the process is long, the process integration is poor, and the production capacity of the equipment is low. , the total cost is high, the quality of raw materials to product processing is low, and the process requirements cannot be met
The existing powder making process needs to load out the hydrogenated raw materials, transfer them to a ball mill for further processing and grinding, and the product is easily oxidized during the process of discharging and loading, resulting in too high oxygen content in the product, which cannot meet the process requirements

Method used

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  • All-in-one machine and preparation method for preparing low-oxygen metal powder
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  • All-in-one machine and preparation method for preparing low-oxygen metal powder

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Effect test

Embodiment 1

[0043] see figure 1 As shown, it is an all-in-one machine for preparing low-oxygen metal powder realized by the embodiment of the present invention, including a resistance wire heating furnace 1, a reaction bomb 2, a positive and negative pressure system 3 and a power unit 4, and a resistance wire heating furnace 1 An installation hole 11 for accommodating the reaction projectile 2 is provided in the axial direction, and the reaction projectile 2 passes through the installation hole 11 and is rotatably connected with the resistance wire heating furnace 1 . In the embodiment, the resistance wire heating furnace 1 equipped with the upper and lower half-opening devices is used to heat the reaction projectile 2, and the upper and lower half-opening devices can be used to open the furnace body to speed up the cooling rate of the reaction projectile 2 and facilitate the reaction. For the daily maintenance of the bomb body 2, water cooling can also be used to accelerate the cooling o...

Embodiment 2

[0056] A titanium suboxide powder with a particle size of 325 mesh, an oxygen content of less than 0.12%, a nitrogen content of less than 0.02%, and a hydrogen content of less than 0.01%. The production cycle of 500kg of 325 mesh titanium alloy powder is 1.5 days. Among them, the titanium alloy powder Contains aluminum and vanadium. Its preparation method is as follows: use Ti6Al4V alloy metal chipping as raw material, add it into the all-in-one machine for preparation, undergo high-temperature positive pressure hydrogen treatment, normal temperature micro-positive pressure powder, high temperature and low pressure dehydrogenation treatment, and obtain an oxygen content lower than 0.12%. , a 325-mesh titanium powder product with a nitrogen content of less than 0.02% and a hydrogen content of less than 0.01%.

Embodiment 3

[0058] A titanium suboxide powder with a particle size of 200 meshes, an oxygen content of less than 0.09%, a nitrogen content of less than 0.02%, and a hydrogen content of less than 0.01%. Its preparation method is as follows: use titanium sponge as raw material, grind it into 200 mesh powder, sieve it through a powder filter, add it to the all-in-one machine for preparation, undergo high-temperature positive pressure hydrogen treatment, normal temperature slightly positive pressure powder, high temperature Low-pressure dehydrogenation treatment to obtain a 200-mesh titanium powder product with an oxygen content of less than 0.09%, a nitrogen content of less than 0.02%, and a hydrogen content of less than 0.01%.

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Abstract

The invention provides an all-in-one machine and a preparation method for preparing low-oxygen metal powder. The device comprises an electric resistance wire heating furnace, a reaction elastic body,a positive and negative pressure system and a power device. The integration of the powder preparation process is realized, the airtightness of the powder preparation process is ensured, the oxidationphenomenon occurred during the loading process in the prior art is solved, and the all-in-one machine for preparing the low-oxygen metal powder is simple in structure, convenient to use, low in cost,and convenient in automation control. The method integrates a high-temperature positive-pressure hydrogen absorption process, an inert gas shielding micro-positive-pressure powder preparation processand a high-temperature negative-pressure dehydrogenation powder preparation process into a whole, is short in process period, realizes full-process seal protection, is safe and reliable, and ensures that the oxygen content in the metal powder is kept within the required range.

Description

technical field [0001] The invention relates to the technical field of metal powder processing, in particular to an all-in-one machine for preparing low-oxygen metal powder and a preparation method. Background technique [0002] Oxidation is an inherent property of all metal powders and in general the presence of these oxides can adversely affect the properties of the finished product prepared from these powders, resulting in a lower quality product. [0003] For example, the oxygen content of metal powders used for 3D printing, hot isostatic pressing, and metal injection molding has a direct relationship to product performance. The lower the oxygen content, the better the molding effect. [0004] In the patent of invention with the application number CN200780036469.9, a method for preparing a metal powder with a purity at least as high as that of the starting powder and an oxygen content equal to or less than 10 ppm is disclosed. 1-10 -7 Said metal powder, which contains ...

Claims

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Application Information

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IPC IPC(8): B22F9/02
CPCB22F9/023
Inventor 徐昭布国亮杨万朋成佳佳杨群贺利鹏
Owner XIAN JIAYE AVIATION TECH