Combined atomization type device and method for preparing spherical metal alloy micro powder

A technology of metal alloy and micropowder, which is applied in the field of 3D printing, can solve the problems of high cost, irregular shape of micropowder, and increased difficulty, and achieve the effect of improving sphericity, particle size controllability, and controllability

Active Publication Date: 2017-06-20
连云港倍特超微粉有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plasma method RF plasma gun fire high-energy plasma gun as a heat source, the required equipment is complex, the raw material requirements are high, the cost is high, and it is difficult to meet the production requirements of mass production of 3D printing metal powder
Due to the fast cooling speed of the water atomization method, there are disadvantages that the shape of the micropowder is irregular, the sphericity is not good, and the oxygen content in the product is too high.
Although the sphericity of the product produced by the inert gas atomization method is greatly improved, and the yield of fine powder is high, satellite droplets are prone to appear on the surface of the product micropowder, r

Method used

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  • Combined atomization type device and method for preparing spherical metal alloy micro powder
  • Combined atomization type device and method for preparing spherical metal alloy micro powder

Examples

Experimental program
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Example Embodiment

[0078] Example 1

[0079] It is suitable for the production of 3D printed spherical 316L stainless steel powder.

[0080] The inner diameter of the shell (9) of the atomization chamber is 5.5m, the height of the straight section is 4.0m, the capacity of the induction melting furnace (1) is 30kg, the diameter of the leak hole of the gas atomization spray ring (4) is 5mm, and the spray top angle is 40°, choose a cone-shaped centrifugal atomization turntable (5) with a diameter of 100mm, the top angle of the cone is 140°, the intersection of the upper end of the centrifugal atomization turntable (5) and the gas atomization spray ring (4) The distance between the points is 30 mm, and the speed of the high-speed motor (7) is set to 6000 rpm.

[0081] Select 30kg of 316L stainless steel raw material with an oxygen content of less than 200ppm (mass), first wash with water and ultrasonically clean the surface of the raw material to remove impurities on the surface of the raw material, and o...

Example Embodiment

[0085] Example 2

[0086] It is suitable for the production of spherical Ti6Al4V alloy powder for 3D printing.

[0087] The inner diameter of the shell (9) of the atomization chamber is 6.0m, the height of the straight section is 5.0m, the capacity of the induction melting furnace (1) is 30kg, the diameter of the leak hole of the gas atomization spray ring (4) is 6mm, and the spray top angle is 45°, choose a cone centrifugal atomization turntable (5) with a diameter of 120mm, the top angle of the cone is 120°, the upper end of the centrifugal atomization turntable (5) and the gas atomization spray ring (4) meet The distance between the points is 40mm, and the speed of the high-speed motor (7) is set to 10000rpm.

[0088] 30kg of Ti6Al4V alloy raw material with oxygen content of less than 200ppm (mass) is selected, and first washed with water and ultrasonically cleaned to remove impurities on the surface of the raw material, and dried to obtain the metal alloy raw material to be melt...

Example Embodiment

[0092] Example 3

[0093] It is suitable for the production of spherical metal titanium powder for 3D printing.

[0094] The inner diameter of the shell (9) of the atomization chamber is 7.0m, the height of the straight cylinder section is 5.5m, the capacity of the induction melting furnace (1) is 30kg, the diameter of the leak hole of the gas atomization spray ring (4) is 6.5mm, and the spray top angle Is 50°, choose the cone centrifugal atomization turntable (5) with a diameter of 130mm, the top angle of the cone is 130°, the upper end of the centrifugal atomization turntable (5) and the gas atomization spray ring (4) spray the gas The distance between the intersections is 50mm, and the speed of the high-speed motor (7) is set to 8000rpm.

[0095] Select 30 kg of metal titanium raw material with an oxygen content of less than 100 ppm (mass), first wash with water and perform ultrasonic cleaning to remove impurities on the surface of the raw material, and obtain the metal alloy raw...

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Abstract

The invention relates to a combined atomization type device and method for preparing spherical metal alloy micro powder. The device comprises an induction melting furnace, a tundish, an inert gas pipe for atomization, a gas atomization spray ring, a centrifugal atomization rotating disc, a high-speed motor, a motor protection shell, an atomization chamber shell, a fixed support and a melting operation bin shell. According to the combined atomization type device and method for preparing the spherical metal alloy micro powder, powder prepared through gas atomization and powder prepared through centrifugal atomization are combined to be used together, so that the pressure of gas for gas atomization and the rotating speed of the centrifugal atomization rotating disc are decreased, the operation difficulty in the manufacturing and production processes of the device is substantially lowered, mass production is achieved, and the prepared metal alloy micro powder meets the specification and requirements of 3D printing for the metal alloy micro powder; and particularly, the method provided by the invention has the advantages that a metal alloy micro powder product is narrow in particle size distribution and good in controllability, the degree of sphericity is significantly improved, the oxygen content is substantially reduced, and meanwhile, the equipment investment and production operation cost are reduced.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and relates to a device and method for preparing spherical metal alloy micropowder by combined atomization, in particular to a device and method for producing metal alloy spherical powder for 3D printing. Background technique [0002] 3D printing (additive manufacturing) technology, especially the 3D printing technology of complex metal components, has become one of the most concerned emerging technologies in the world. Compared with the traditional machining process, 3D printing technology is not limited by the geometric shape of the parts, reduces expensive costs, shortens research and development time, low labor costs, and does not require pre-processing and post-processing processes, making it a very useful tool. potential technology. In order to obtain high-quality metal alloy formed parts, in addition to important conditions such as process, equipment and software, metal alloy powder m...

Claims

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Application Information

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IPC IPC(8): B22F9/10
CPCB22F9/10
Inventor 孟令光胡硕真呼和涛力郑兰君王秀霞
Owner 连云港倍特超微粉有限公司
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