CN220659225U - Centrifugal atomizing disk for 3D printing metal powder - Google Patents

Abstract

The utility model discloses a 3D printing metal powder centrifugal atomization disk, which relates to the technical field of a 3D printing metal powder centrifugal atomization disk, and includes a rotating centrifugal disk, a molybdenum mesh, a high-speed shaft, a high-speed motor, uniformly distributed holes, a rotating A rotating centrifugal wall is installed on the outside of the rotating centrifugal disk, and a plurality of evenly distributed holes are provided on the sides of the rotating centrifugal disk and the rotating centrifugal wall. The utility model, through the arrangement of the rotating centrifugal disk and the rotating centrifugal wall, enables the disk atomizer to achieve mass production and continuous production in multiple furnaces, the casting temperature is controllable, and the particle size of the metal particles can be uniformly controlled, and the metal During the particle formation process, under the action of high-speed rotating molybdenum mesh filtration, each metal particle is recrystallized, so that the particle size, sphericity, and the quality of individual particles can be accurately controlled. There are no hollow spheres or satellite spheres. Problems such as metal particle defects.

Description

A 3D printed metal powder centrifugal atomization disk

Technical field

The utility model relates to the technical field of a 3D printing metal powder centrifugal atomization disk, and in particular to a 3D printing metal powder centrifugal atomization disk.

Background technique

The centrifugal atomizer disk is the core component for obtaining metal particles and has a vital impact on the shaping of metal particles and product quality. Metal particles are used in additive manufacturing, especially in the field of metal 3D printing. The requirements for sphericity and particle size are extremely high. The metal mother liquid is used to pass through the component to obtain the metal particles.

At present, due to equipment limitations, the existing metal particle atomization trays cannot achieve the manufacturing and batch production of uniform fine particles. They are still in the stage of small-scale production. Moreover, due to the limitations of sphericity and particle size, the product quality cannot reach Requirements, it is common for powder particles to fail to meet the requirements or have uneven particle sizes, insufficient sphericity, or defects such as hollow balls and satellite balls. Important parts used in 3D printing have defects, so a centrifugal atomization of 3D printed metal powder is needed. to meet people’s needs.

Utility model content

The purpose of this utility model is to provide a 3D printed metal powder centrifugal atomization disk to solve the problem in the above-mentioned background technology that cannot realize the manufacturing and batch production of uniform fine particles, and at the same time, the product quality is limited by the sphericity and particle size. It is difficult to meet production requirements, resulting in defects such as hollow balls and satellite balls, which ultimately leads to defects in 3D printed parts.

In order to achieve the above purpose, the utility model provides the following technical solution: a 3D printing metal powder centrifugal atomization disk, including a rotating centrifugal disk, a molybdenum mesh, a high-speed shaft, a high-speed motor, uniformly distributed holes, and a rotating centrifugal wall. A rotating centrifugal wall is installed on the outside of the disk. A plurality of uniformly distributed holes are provided on the sides of the rotating centrifugal disk and the rotating centrifugal wall. A plurality of micron-level molybdenum meshes are provided inside the plurality of uniformly distributed holes. The rotating centrifugal wall is installed on the outside of the disk. A high-speed shaft is fixedly connected to the bottom of the disk, and a high-speed motor is installed at the lower end of the high-speed shaft.

Preferably, the molybdenum mesh includes a protective layer and a thermal conductive layer, the inner wall of the molybdenum mesh is provided with a protective layer, and the outer wall of the molybdenum mesh is provided with a thermal conductive layer.

Preferably, the rotating centrifuge disk is made of molybdenum.

Preferably, a high-speed bearing is provided on the outside of the high-speed shaft, and a wear-resistant gasket is provided on the upper surface of the high-speed bearing. The upper surface of the wear-resistant gasket is fixed to the bottom of the rotating centrifugal disk.

Preferably, the inner walls of the plurality of uniform holes match the size of the outer wall of the molybdenum mesh.

Preferably, the high-speed motor and the high-speed shaft are connected through high-speed bearings, and the wear-resistant gasket is made of high manganese steel.

Preferably, the protective layer is made of aluminum-based alloy material, and the thermal conductive layer is made of titanium-based alloy material.

The beneficial effects of this utility model are:

1. Overcoming the shortcomings of low efficiency of previous disc centrifuges, the above disc atomizer can achieve mass production, continuous production in multiple furnaces, and the casting temperature can be controlled.

2. For the problem that the previous disk centrifuge could not uniformly control the extrusion of high-temperature liquid, the atomization effect of the centrifugal atomization disk involved is more uniform.

3. In the past, the disc centrifuge could not control the particle size, and the metal particles were formed without recrystallization. The particle size of the metal particles can be uniformly controlled, and the metal particles can be filtered through the high-speed rotating molybdenum mesh during the formation process. Under the action, each metal particle is recrystallized, so that the particle size, sphericity, and quality of individual particles can be accurately controlled, and there are no metal particle defects such as hollow spheres and satellite spheres.

4. Compared with the disc centrifuge, under the synchronous use of centrifugal speed and multi-layer molybdenum mesh, the porosity can be optimized again. By using higher speed and finer gaps, and by increasing the casting temperature of the tundish, nanometer density can be achieved. , super nanoparticles.

Description of the drawings

Figure 1 is a schematic three-dimensional structural diagram of a 3D printed metal powder centrifugal atomization disk proposed by the utility model;

Figure 2 is a schematic diagram of the unfolded structure of the rotating centrifugal disk 1 of a 3D printed metal powder centrifugal atomization disk proposed by the utility model;

Figure 3 is a schematic diagram of the partially unfolded structure of the rotating centrifugal wall 6 of a 3D printed metal powder centrifugal atomization disk proposed by the utility model.

In the picture: 1. Rotating centrifugal disk; 2. Molybdenum mesh; 21. Protective layer; 22. Thermal conductive layer; 3. High-speed shaft; 4. High-speed motor; 5. Uniformly distributed holes; 6. Rotating centrifugal wall; 7. High-speed bearing ; 8. Wear-resistant gasket.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example.

Referring to Figure 1-3, a 3D printed metal powder centrifugal atomization disk includes a rotating centrifugal disk 1, a molybdenum mesh 2, a high-speed shaft 3, a high-speed motor 4, evenly distributed holes 5, and a rotating centrifugal wall 6. The rotating centrifugal disk 1 A rotating centrifugal wall 6 is installed on the outside. A plurality of uniformly distributed holes 5 are provided on the sides of the rotating centrifugal disk 1 and the rotating centrifugal wall 6. A plurality of micron-level molybdenum meshes 2 are provided inside the plurality of uniformly distributed holes 5. The rotating centrifugal disk 1 A high-speed shaft 3 is fixedly connected to the bottom of the high-speed shaft 3. A high-speed motor 4 is installed at the lower end of the high-speed shaft 3. The high-speed motor drives the turntable to rotate at high speed. The rotation of the high-speed motor 4 drives the rotating centrifugal disk 1 to perform high-speed rotating centrifugal motion. The number of revolutions is required to be 50,000. ~100,000 revolutions. Because the atomization disk moves in a vacuum environment, it is considered to be in direct contact with high-temperature molten steel and form metal powder with required particle size under the action of high-speed centrifugal force. The metal mother liquid is extruded out of the molybdenum mesh 2 under the action of centrifugal force. Due to the mist The melting plate rotates at high speed, and the high-temperature liquid continuously flows out along the tiny holes of the molybdenum mesh 2 under the action of the rotating centrifugal force, so that the high-temperature liquid is continuously atomized, and the high-temperature metal liquid is extruded and formed into spherical particles of a predetermined size during air flight, and gradually condenses. And form metal particles with high sphericity and uniform particle size.

As shown in Figure 2, the molybdenum mesh 2 includes a protective layer 21 and a thermal conductive layer 22. The inner wall of the molybdenum mesh 2 is provided with a protective layer 21, and the outer wall of the molybdenum mesh 2 is provided with a thermal conductive layer 22. Through the protective layer 21 and the thermal conductive layer 22, both A metal material with excellent wear resistance and corrosion resistance. It has the advantages of high hardness, high strength and high heat resistance. It is widely used in aviation, aerospace, medical and other fields.

As shown in Figures 1 and 3, the material of the rotating centrifugal disc 1 is molybdenum. The molybdenum element is used to easily combine with chromium, nickel, manganese and silicon to produce different types of stainless steel, tool steel, high-speed steel and alloy steel. The finished stainless steel has good corrosion resistance. The inner walls of the multiple uniformly distributed holes 5 match the size of the outer wall of the molybdenum mesh 2. The formed metal particles pass through the uniformly distributed holes 5 and the molybdenum mesh 2 of matching sizes. This makes the metal particles that come out have a better forming effect.

As shown in Figure 1, a high-speed bearing 7 is provided on the outside of the high-speed shaft 3, and a wear-resistant gasket 8 is provided on the upper surface of the high-speed bearing 7. The upper surface of the wear-resistant gasket 8 is fixed to the bottom of the rotating centrifugal disk 1. The high-speed motor 4 and high-speed shaft 3 are connected through high-speed bearing 7. The wear-resistant gasket 8 is made of high-manganese steel. By connecting with high-speed bearing 7, the over-speed and stable operation of the atomization disk turntable can be achieved. At the same time, the use of high-manganese steel can improve The service life of wear-resistant gasket 8 and high-speed bearing 7.

As shown in Figure 3, the protective layer 21 is made of aluminum-based alloy material, and the thermal conductive layer 22 is made of titanium-based alloy material. Through the arrangement of the protective layer 21 and the thermal conductive layer 22, the metal particles will not cause serious wear and tear on the inner wall. The problem is that the formed metal balls are not ideally formed.

Working principle of this utility model:

The metal mother liquid flows into the centrifugal disc casting cavity, and the high-speed motor 4 drives the high-speed shaft 3 to rotate rapidly. Then, driven by the rotating centrifugal disc 1, the liquid metal instantly passes through the molybdenum mesh 2 on the rotating centrifugal wall 6 through the action of high centrifugal force. The holes reserved in the body make the metal particles cool and crystallize under the action of air flight and vacuum protection during the process of passing through the holes. In actual manufacturing, the requirements of high-speed dynamic balance, increased rotation speed and safety and stability of high-speed operation are taken into consideration. , it can be considered that the shape of the rotating body is designed into a tower structure to further increase the number of revolutions and the safety and stability of the system;

This production process can realize continuous casting of multiple furnaces. The tundish is placed between the cavities of the upper pallet. The small casting stream is directly poured into the atomization plate. Through the direct contact between the atomization plate and the tundish, it can be divided into several containers for simultaneous use. Achieving continuous production, this process is not only limited to high-temperature alloys, but can also smelt higher-end alloy mother liquors such as high-entropy alloys, various non-ferrous metals, etc., and can even achieve materials with higher requirements above 2000°C, making them widely used Sex is broader.

The above are only preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person familiar with the technical field can, within the technical scope disclosed by the present utility model, implement the present utility model according to the present utility model. Novel technical solutions and utility model concepts, including equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims (7)

1. A 3D printed metal powder centrifugal atomization disk, including a rotating centrifugal disk (1), a molybdenum mesh (2), a high-speed shaft (3), a high-speed motor (4), uniformly distributed holes (5), and a rotating centrifugal wall ( 6), characterized in that: a rotating centrifugal wall (6) is installed on the outside of the rotating centrifugal disk (1), and a plurality of evenly distributed holes are provided on the sides of the rotating centrifugal disk (1) and the rotating centrifugal wall (6). (5), multiple micron-level molybdenum meshes (2) are provided inside the plurality of uniformly distributed holes (5), and a high-speed shaft (3) is fixedly connected to the bottom of the rotating centrifuge disk (1). A high-speed motor (4) is installed at the lower end of the shaft (3). 2. A 3D printing metal powder centrifugal atomization disk according to claim 1, characterized in that: the molybdenum mesh (2) includes a protective layer (21) and a thermal conductive layer (22), and the molybdenum mesh (2) The inner wall of 2) is provided with a protective layer (21), and the outer wall of the molybdenum mesh (2) is provided with a thermal conductive layer (22). 3. A 3D printed metal powder centrifugal atomization disk according to claim 1, characterized in that: the material of the rotating centrifugal disk (1) is molybdenum. 4. A 3D printed metal powder centrifugal atomization disk according to claim 1, characterized in that: a high-speed bearing (7) is provided on the outside of the high-speed shaft (3), and the upper part of the high-speed bearing (7) is A wear-resistant gasket (8) is provided on the surface, and the upper surface of the wear-resistant gasket (8) is fixed to the bottom of the rotating centrifuge disk (1). 5. A 3D printed metal powder centrifugal atomization disk according to claim 1, characterized in that the inner walls of the plurality of uniformly distributed holes (5) match the size of the outer wall of the molybdenum mesh (2). 6. A 3D printed metal powder centrifugal atomization disk according to claim 4, characterized in that: the high-speed motor (4) and the high-speed shaft (3) are connected through a high-speed bearing (7), and the wear-resistant The gasket (8) is made of high manganese steel. 7. A 3D printed metal powder centrifugal atomization disk according to claim 2, characterized in that: the protective layer (21) is made of aluminum-based alloy material, and the thermal conductive layer (22) is made of titanium-based alloy. material.