A metal 3D printer airtight chamber atmosphere deoxygenation and circulation purification method and equipment

A 3D printer, cycle purification technology, applied in the direction of improving process efficiency, improving energy efficiency, additive manufacturing, etc., can solve the problems of affecting the monitoring of the processing process, affecting the processing quality, and black smoke falling off, so as to improve the molding quality and reduce smoke and dust , the effect of reducing the oxygen content of the gas

Active Publication Date: 2016-10-05
SOUTH CHINA UNIV OF TECH
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the accumulation of black smoke, part of the black smoke will fall off during the next processing, part of it will fall on the powder to pollute the powder, and part of it will fall on the molding surface and affect the processing quality
The black smoke adhering to the side of the observation window will seriously affect the monitoring of the processing process

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
  • A metal 3D printer airtight chamber atmosphere deoxygenation and circulation purification method and equipment
  • A metal 3D printer airtight chamber atmosphere deoxygenation and circulation purification method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] Such as figure 1 , 2shown. The metal 3D printer airtight chamber atmosphere deoxygenation and circulation purification equipment of the present invention includes an industrial computer (not shown in the figure) molding chamber 8, one end of the molding chamber 8 is provided, and the other end is provided with an air inlet 20; The front end of the molding chamber 8 is provided with a sealed door 9, and the bottom of the molding chamber 8 is provided with a sealed door detection sensor 11 for detecting whether the sealed door is closed. The airtight door detection sensor 11 adopts a Hall sensor to ensure the airtightness of the molding chamber 8 to ensure that the airtight door 9 is in a sealed closed state before processing.

[0039] The gas outlet 10 is connected to the gas inlet 20 through a gas circulation pipeline;

[0040] On the gas circulation pipeline between the air inlet 20 and the air outlet 10, a first pneumatic butterfly valve 21, a dust purifier 19, a s...

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 a metal 3D printer airtight chamber atmosphere deoxygenation and circulation purification method and equipment. The two ends of the molding chamber are respectively provided with an air inlet and an outlet, and the inlet and outlet are connected through a gas circulation pipeline; the gas circulation pipeline is provided with There are a first pneumatic butterfly valve, a dust purifier, a second pneumatic butterfly valve, and a dewatering dryer; a branch pipeline is provided on the gas circulation pipeline between the second pneumatic butterfly valve and the dewatering dryer, and the end of the branch pipeline is It is connected with a vacuum pump, molecular sieves and vacuum pipeline solenoid valves are installed on the branch pipeline; the molding chamber is connected with an inert gas source. The present invention can reduce the oxygen content in the molding chamber to the required range before processing, start the gas cycle purification during the processing, and maintain the purity of the gas in the molding chamber; introduce pressure detection and oxygen content detection, so that the oxygen content and oxygen content can be obtained during the processing. The pressure is always within a reasonable range. It improves the molding efficiency and quality of the 3D printer, and ensures the safety and reliability of the processing process.

Description

technical field [0001] The present invention relates to selective laser melting processing molding equipment, in particular to a metal 3D printer airtight chamber atmosphere deoxygenation and circulation purification method and equipment. Background technique [0002] During the forming process of selective laser melting, it needs to be protected by high-purity nitrogen, argon and other inert gases. During the processing of metal powder after laser focusing, a large amount of smoke in the forming room greatly weakens the protective effect of nitrogen. At the same time, a large amount of smoke adheres to the metal powder, which will directly affect the absorption of laser energy on the surface of each layer of metal powder. And ultimately affect the quality of metal forming parts. Therefore, it is necessary to circulate and purify the gas in the molding chamber. [0003] SLM molding needs to completely melt the metal material, and the metal material will be oxidized when in...

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): B22F3/105
CPCB22F10/20Y02P10/25
Inventor 王迪白玉超杨永强
Owner SOUTH CHINA 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