Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An ultrasonic atomization device and method for preparing spherical metal powder

An ultrasonic atomization and metal technology is applied in the field of ultrasonic atomization device and the preparation of spherical metal powder. Active metal and air contact reaction, good fluidity effect

Active Publication Date: 2022-06-21
SHANGHAI UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above three ultrasonic atomization devices, the ultrasonic tool head will be in direct or indirect contact with the molten metal, and cavitation corrosion will occur. The powder device is often not suitable for atomizing metal materials with strong atomization activity or high melting point, and it is difficult to obtain spherical metal powder with fine particle size, narrow particle size distribution, high sphericity and good fluidity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An ultrasonic atomization device and method for preparing spherical metal powder
  • An ultrasonic atomization device and method for preparing spherical metal powder
  • An ultrasonic atomization device and method for preparing spherical metal powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Select 17-4 stainless steel as the metal base material, use laser melting (the heat source generator is a YAG laser), the laser energy is 20kW, the laser frequency is 20kHz, the laser spot diameter is 100μm, and the metal base metal bar (diameter is 40mm) is set by The conveying system with rollers is used for transmission, and the feeding speed of the metal base material is 30mm / min; the chamber of the device is vacuumized to a pressure of 0.1Pa through the vacuum channel to prepare the spherical metal powder by ultrasonic atomization, and then the chamber is filled with inert gas through the inert gas channel. The pressure of nitrogen gas is 0.1MPa, and the flow rate of nitrogen gas charged to the atomization chamber is kept at 20m 3 / min, the heat source starts to work to melt the metal base metal bar, the material of the horn is 45# steel, the frequency of the mechanical vibration of the rack and pinion is 25kHz, the speed of the mesh screen is set to 60rpm, the metal...

Embodiment 2

[0083] 304 stainless steel is selected as the metal base material, and laser melting is adopted (the heat source generator is a YAG laser), the laser energy is 20kW, the laser frequency is 20kHz, the diameter of the laser spot is 100μm, and the metal base material bar (diameter is 40mm) is provided with rollers. The feeding speed of the metal base material is 30mm / min; the chamber of the device to prepare spherical metal powder is vacuumized by ultrasonic atomization through the vacuum channel to the pressure of 0.1Pa, and then the chamber is filled with inert gas nitrogen through the inert gas channel To the pressure of 0.1MPa, the flow rate of nitrogen filling into the atomization chamber is kept at 20m 3 / min, the heat source starts to work to melt the metal base metal bar, the material of the horn is 45# steel, the frequency of the mechanical vibration of the rack and pinion is 25kHz, the speed of the mesh screen is set to 60rpm, the metal droplets are rotated by centrifuga...

Embodiment 3

[0088] The GH4169 nickel-based superalloy is selected as the metal base material, and laser melting is adopted (the heat source generator is a YAG laser), the laser energy is 20kW, the laser frequency is 20kHz, the diameter of the laser spot is 100μm, and the metal base metal bar (diameter is 25mm) consists of A conveyor system equipped with rollers is provided for transmission, and the feeding speed of the metal base material is 50mm / min; the chamber of the device for preparing spherical metal powder is vacuumized to a pressure of 0.1Pa through ultrasonic atomization through a vacuum channel, and then filled into the chamber through an inert gas channel Inert gas nitrogen to the pressure of 0.1MPa, and the flow rate of nitrogen filling into the atomization chamber is kept at 20m 3 / min, the heat source starts to work to melt the metal base metal bar, the material of the horn is 45# steel, the frequency of the mechanical vibration of the rack and pinion is 25kHz, the speed of t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of spherical metal powder preparation, and in particular relates to an ultrasonic atomization device and a method for preparing spherical metal powder. The ultrasonic atomization device provided by the invention comprises an ultrasonic vibration system (1), a rack and pinion system (2) and an atomization system (3); the ultrasonic vibration system (1) comprises a fixedly connected transducer (1- 1) and a horn (1‑2); the atomization system (3) includes a fuse system (3‑1) and an atomization chamber (3‑2) below the fuse system (3‑1) ); the mesh sieve (3-2-1) is set in the atomization chamber (3-2); the horn (1-2) and the rack and pinion system (2) mesh; the gear teeth The bar system (2) and the spray chamber (3‑2) mesh. In the device provided by the invention, the horn has no contact with the molten metal, and there is no cavitation corrosion.

Description

technical field [0001] The invention belongs to the technical field of spherical metal powder preparation, in particular to an ultrasonic atomization device and a method for preparing spherical metal powder. Background technique [0002] Metal powder is small in size and various in variety, suitable for various processing methods. As a raw material, it is widely used in powder metallurgy, spraying, electronics and chemical industries. At present, metal powders include various materials such as cobalt-chromium alloys, stainless steel, aluminum alloys, bronze alloys, titanium alloys, and nickel-based alloys. In addition to good plasticity, the powder used in metal 3D printing must also meet the requirements of fine powder particle size, narrow particle size distribution, high sphericity and good fluidity. [0003] At present, the main methods of preparing metal powder are: mechanical pulverization method, rotary atomization method, gas atomization method, spheroidization meth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/08
CPCB22F9/082B22F2009/0832
Inventor 任忠鸣陈超越王江帅三三殷宇豪
Owner SHANGHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com