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Metal powder preparation method and device based on thermal spraying

A metal powder, thermal spraying technology, applied in the field of powder metallurgy, can solve problems such as low efficiency, achieve the effect of improving efficiency, solving efficiency problems, and being conducive to the refinement of droplet size

Inactive Publication Date: 2018-01-12
张家港创博金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for forming metal droplets by thermal spraying low-tech and cooling with high-pressure gas to produce metal powder, which solves the problems of low efficiency brought by the existing atomization method through crucible melting technology

Method used

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  • Metal powder preparation method and device based on thermal spraying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Prepare metal aluminum, the device is as attached figure 1 shown. The raw material is cast metal aluminum wire with a diameter of 4.0 mm.

[0037] The wire feed rate of the thermal spray generator is 15g / min, the flow rate of argon gas is 150L / min, the flow rate of nitrogen gas is 12L / min, the current is 350A, the voltage is 65V, and the spray distance is 120mm. The cooling gas is compressed argon with a velocity of 300m / s. The size of the cooling beam is equivalent to the size of the metal droplet beam.

[0038] The size of the primary cooling sieve is 60-120 microns; the sieve size of the secondary filter is 20-60 microns;

Embodiment 2

[0040] Preparation of metal copper, the device is as attached figure 1 shown. The raw material is cast copper wire with a diameter of 3.6 mm.

[0041] The wire feed rate of the thermal spray generator is 16g / min, the flow rate of argon gas is 180L / min, the flow rate of nitrogen gas is 14L / min, the current is 420A, the voltage is 72V, and the spray distance is 180mm. The cooling gas is compressed argon with a velocity of 250m / s. The size of the cooling beam is equivalent to the size of the metal droplet beam.

[0042] The size of the primary cooling sieve is 80-160 microns; the sieve size of the secondary filter is 30-80 microns;

Embodiment 3

[0044] Preparation of metal copper-tin alloy, the device is as attached figure 1 shown. The raw material is copper-tin wire with a diameter of 5.0mm in cast state.

[0045]The wire feed rate of the thermal spray generator is 15g / min, the flow rate of argon gas is 150L / min, the flow rate of nitrogen gas is 12L / min, the current is 350A, the voltage is 650V, and the spray distance is 80-500mm. The cooling gas is compressed argon with a velocity of 300m / s. The size of the cooling beam is equivalent to the size of the metal droplet beam.

[0046] The size of the primary cooling sieve is 60-120 microns; the sieve size of the secondary filter is 20-60 microns;

[0047] It can be seen from the above-mentioned embodiments that the fat powder process based on the thermal spraying generating device to generate metal droplet beams and compressed gas beams for front cooling, saves the crucible smelting in the prior art, and greatly improves the production efficiency while realizing cont...

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Abstract

The invention relates to a metal powder preparation method and device based on thermal spraying. According to the technical scheme, a raw material wire rod is conveyed and then is formed into metal molten drop bundles through utilizing a thermal spraying generating device; accelerating cooling atomizing process is carried out on the front surface of the the metal molten drop bundles through high-speed compressed gas; target metal powder is prepared through a two-stage grading filtering device, and the size of the powder can be adjusted. According to the method, the crucible smelting process required by a traditional atomizing method is not needed, and the method is simple, convenient and efficient.

Description

technical field [0001] The invention relates to a method for preparing metal powder, and belongs to the technical field of powder metallurgy, in particular to a method and a device for preparing metal powder by using a thermal spraying technology and a high-pressure gas cooling method. Background technique [0002] In recent years, rapid prototyping or 3D printing has developed rapidly, and its special ability of flexible manufacturing has also been applied in more and more fields. However, due to its high cost and price, its industrial development space is restricted. [0003] Metal powder is one of the most important raw materials for rapid prototyping or 3D printing technology, and its cost accounts for more than 1 / 3 of the total cost. Therefore, reducing the manufacturing cost of powder materials is of great significance for reducing the cost of rapid prototyping or 3D printing and expanding its industrial application. [0004] Metal powder preparation can be made by c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B33Y70/00
Inventor 李晶
Owner 张家港创博金属科技有限公司
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