Auxiliary airflow type pneumatic on-demand sprayer for reducing diameter of metal droplet

A spray device and air flow technology, applied in the field of additive manufacturing, can solve the problems of restricting the development of metal droplet spraying additive manufacturing technology and affecting the quality of formed parts, achieving a simple structure, ensuring original performance, and improving molding accuracy. Effect

Active Publication Date: 2018-12-21
BEIJING UNIV OF TECH
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the metal droplet jet additive manufacturing technology, the forming process is restricted by the size of the metal d

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
  • Auxiliary airflow type pneumatic on-demand sprayer for reducing diameter of metal droplet
  • Auxiliary airflow type pneumatic on-demand sprayer for reducing diameter of metal droplet
  • Auxiliary airflow type pneumatic on-demand sprayer for reducing diameter of metal droplet

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] The present invention will be described in detail below with reference to the drawings and embodiments.

[0022] a) Since the invention needs to ensure the size of the droplets generated, there is a higher requirement on the diameter of the nozzle hole (8), which is between 50 μm and 200 μm. The setting of the nozzle (7) can facilitate the replacement of nozzles (7) of different sizes. At the same time, problems such as difficulty in handling when the nozzle (7) is blocked can be avoided.

[0023] b) In order to reduce the energy dissipation in the work of the pneumatic nozzle, the cone angle of the processed nozzle (7) should be less than 90°.

[0024] c) In order to ensure the service life of the pneumatic nozzle (5) and nozzle (7), the materials are made of high-temperature resistant ceramics and nickel-chromium alloys.

[0025] d) In order to improve the spray effect of the pneumatic nozzle (5), the cavity volume is set to a cylindrical cavity with a diameter of 20mm and a...

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

No PUM Login to view more

Abstract

The invention discloses an auxiliary airflow type pneumatic on-demand sprayer for reducing diameters of metal droplets, which belongs to the technical field of additive manufacturing. The auxiliary airflow type pneumatic on-demand sprayer comprises three parts: a heater, a sprayer, and an auxiliary air circuit device. The heater is mainly composed of a heating ring; the sprayer is mainly composedof an alloy casing, a nozzle casing, a nozzle, an end cover and the like; the auxiliary airflow device is mainly composed of an auxiliary airflow disk. In 3D printing, the on-demand sprayer can reducethe diameters of the droplets by adjusting the airflow of the auxiliary air circuit for a situation that the diameter of the nozzle cannot be continuously reduced, and can also be used for adjustingsome special cases that it is easy to oxidize when special metals are sprayed and the like; the forming precision is effectively improved, the original performances of the materials are ensured, and the working requirements under different conditions are satisfied.

Description

technical field [0001] The invention relates to an auxiliary airflow type pneumatic on-demand spraying device which can be used in droplet spraying to reduce the diameter of metal droplets, and belongs to the technical field of additive manufacturing. Background technique [0002] Metal droplet jet additive manufacturing technology is a 3D printing technology developed based on the principle of inkjet printing. Based on the "discrete-superposition" forming principle, the liquid metal is first controlled to generate uniform droplets, and then the droplets are deposited on a specific position of the substrate through the movement of the substrate to achieve point-by-point and layer-by-layer accumulation to form a complex three-dimensional solid structure. This technology has the advantages of simple process flow, low production cost, high density of formed parts, and good mechanical properties. It has broad application prospects in the fields of rapid prototyping of tiny metal...

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
IPC IPC(8): B22F3/115B33Y30/00
CPCB22F3/115B33Y30/00
Inventor 刘赵淼钟希祥徐元迪逄燕
Owner BEIJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap