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Centrifugal atomization rotating disc, centrifugal atomization device and centrifugal atomization method

A technology of centrifugal atomization and rotating disk, which is applied in the field of metal powder making equipment, can solve the problems of centrifugal atomization that cannot be carried out continuously and stably, pitting and staining, and achieve uniform size, reduce pitting, and stable preparation Effect

Pending Publication Date: 2020-12-04
SHENZHEN FITECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the material of the atomization disc, the core component of the traditional centrifugal atomization equipment, is limited. 0 C~2000 0 C (degrees Celsius) melting point of such high-temperature metal liquids are prone to pitting and staining, which makes centrifugal atomization unable to be carried out continuously and stably.

Method used

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  • Centrifugal atomization rotating disc, centrifugal atomization device and centrifugal atomization method
  • Centrifugal atomization rotating disc, centrifugal atomization device and centrifugal atomization method
  • Centrifugal atomization rotating disc, centrifugal atomization device and centrifugal atomization method

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Effect test

Embodiment 1

[0055] Example 1: The disc core is made of high-strength graphite (Shanghai Toyo TTK-4), and the disc core is as follows figure 1 As shown, the disc core is a butterfly-shaped accommodation space with arc edges, the bracket is made of TC4 titanium alloy, the metal liquid is tin-based solder metal Sn5Pb92.5Ag2.5, and the fluid atomization temperature is 520 0 C (Celsius). The diameter of the disc core is 50mm, the rotational speed of the disc core is 45000rpm (revolution per minute), the linear velocity is 118m / s (meter per second), the continuous atomization is 8h (hour), and the flow rate is 200kg / h (kilogram per hour) , The obtained powder is measured by the European and American laser particle size analyzer LS-6, and the powder D1O=15μm (micron), D50=30μm, D90=50μm.

Embodiment 2

[0057] Embodiment 2: Apply the high-temperature metal atomization disk core in this application, the disk core is made of zirconia ceramics, the disk core is as figure 1 As shown, the disk core is a butterfly-shaped storage space with arc edges, the bracket is made of TC4 titanium alloy, the metal liquid is copper liquid, and the atomization temperature is 1200 0 C, the diameter of the turntable is 40mm, the rotation speed of the disk core is 50000rpm, the edge line speed of the disk core is 105m / s, the continuous atomization is 8h, the flow rate is 150kg / h, and the obtained powder is measured by the European and American laser particle size analyzer LS-6. D50=32μm, D90=51μm.

Embodiment 3

[0059] Embodiment 3: Using the high-temperature metal atomization disk core of the present application, the disk core is made of zirconia ceramics, the bracket is made of TC10 titanium alloy, the diameter of the disk core is 35mm, and the disk core is as follows Figure 5 As shown, the disc core is a conical bucket-shaped arc side disc, the angle of the cone bucket top angle is 120°, the rotational speed of the disc core is 55000rpm, and the linear velocity of the arc edge of the disc core is 100m / s. The atomized high-speed metal It is stainless steel 304, the atomization temperature is 1600 0 C, the flow rate is 150kg / h, continuous atomization for 4h, the obtained powder is measured as D1O=9μm, D50=30μm, D90=60μm. After sieving, the required 3D printing powder with a size distribution of 25 μm to 45 μm can be obtained.

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Abstract

The invention discloses a centrifugal atomization rotating disc, a centrifugal atomization device and a centrifugal atomization method. The centrifugal atomization rotating disc comprises a bracket made of a high-strength material and a disc core made of a high-temperature-resistant and corrosion-resistant material, and the disc core contains high-temperature liquid metal to be centrifugally atomized. The centrifugal atomization rotating disc is made of the high-temperature-resistant and corrosion-resistant material, and the bracket is made of the high-strength material so that the centrifugalatomization rotating disc can be suitable for atomization of high-melting-point liquid metal with the melting point ranging from 500 DEG C to 2000 DEG C; high-temperature liquid metal can be contained in the tops of the disc cores in different forms more conveniently, the surface shapes of the disc cores are quite beneficial for high-temperature metal liquid to stably keep uniform and equal-thickness liquid membranes moving towards the edge of a rotating disc under the effect of the centrifugal force, centrifugal atomization can form metal liquid droplet wires in a filamentous mode as much aspossible, and the liquid metal can be cooled into a geometrical shape which is uniform in size, concentrated in distribution and high in degree of sphericity.

Description

technical field [0001] The invention relates to the technical field of metal powder making equipment and methods, in particular to a centrifugal atomization rotating disk, a centrifugal atomization device and a centrifugal atomization method for centrifugal atomization of high-temperature liquid metal. Background technique [0002] Among the existing technologies, centrifugal atomization technology is the most widely used technology in the manufacture of contemporary tin-based metal powders. It has the advantages of large production capacity, high sphericity of powder products, and low oxygen content. [0003] The core component of the centrifugal atomization technology in the prior art is the centrifugal atomization disc. Generally, the conventional centrifugal atomization discs are made of titanium alloy, stainless steel and high-temperature steel, and are used for melting points <500 0 In the low temperature metal of C. [0004] In the centrifugal atomizing disk in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/10
CPCB22F9/10
Inventor 徐朴王思远刘传福刘硕石建豪
Owner SHENZHEN FITECH
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