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A kind of anti-vacuum evaporation metal additive manufacturing device and its working and manufacturing method

A technology of additive manufacturing and working methods, applied in the direction of manufacturing tools, additive processing, metal processing equipment, etc., can solve problems such as damage to the optical path, easy pollution of end optical devices, failure of manufacturing systems, etc., to achieve the effect of pollution control

Active Publication Date: 2021-09-28
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides an anti-evaporation and anti-vacuum evaporation metal additive manufacturing device suitable for high vacuum environment and its working and manufacturing method, and focuses on solving the problem that the metal vapor and metal droplets generated in the manufacturing process are easy to pollute the terminal optical devices and thus Destruction of the optical path leads to technical difficulties in the failure of the manufacturing system

Method used

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  • A kind of anti-vacuum evaporation metal additive manufacturing device and its working and manufacturing method
  • A kind of anti-vacuum evaporation metal additive manufacturing device and its working and manufacturing method
  • A kind of anti-vacuum evaporation metal additive manufacturing device and its working and manufacturing method

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Embodiment 1

[0070] Example 1: High vacuum environment anti-evaporation metal additive manufacturing device

[0071] For the embodiment of the present invention, please refer to figure 1 Shown is a high-vacuum environment anti-evaporation metal additive manufacturing device, which includes laser focusing head 6, high-speed shutter, low-speed shutter, metal melt 4, workbench and optical switch controller and other elements; There are two kinds of gates, high-speed optical gate and low-speed optical gate, between the laser focusing head 6 and the molten metal 4; The high-speed shutter 2 and the low-speed shutter include a low-speed shutter 3; the mechanical shutter is realized by periodic rotary motion, and the two shutters are opened at the same time. The controller sends out the light-off enabling signal; the continuous pulse control signal sent by the optical switch controller to the laser makes the laser beam output in a pulsed mode, and the pulsed laser acts on the surface of the metal...

Embodiment 2

[0078] Example 2: An optimal working method and sequence of a high-vacuum environment anti-evaporation metal additive manufacturing device

[0079] The embodiment of the present invention is an optimal working method based on the device in Embodiment 1. Using the method in the embodiment of the present invention for metal additive manufacturing can effectively prevent metal droplets from contaminating optical components and ensure the accuracy of metal additive manufacturing. Efficient and orderly.

[0080] The working method described in the embodiment of the present invention describes in detail a cycle of metal additive manufacturing process.

[0081] Specifically, please Figure 2a and Figure 2b shown, t 0 Two high-speed optical gates and one low-speed optical gate are fully opened at the same time; then the laser is controlled to start emitting light and close after a duration of dt (laser pulse width). At this time, the relationship can be satisfied by design: dt1 -t...

Embodiment 3

[0085] Example 3: An optimal design method for an anti-evaporation metal additive manufacturing device in a high vacuum environment

[0086] A high-vacuum environment anti-evaporation metal additive manufacturing device proposed by the present invention, its key design parameters include the distance L from the laser focusing head to the molten metal 0 , the distance L from the shutter to the molten metal 1 , the light output aperture of the laser focusing head d 0 , high-speed optical shutter aperture d 1 , low-speed shutter light aperture d 2 , high-speed shutter turntable diameter D 1 , the number of optical ports of the high-speed optical gate N 1 , the diameter of the low-speed shutter turntable D 2 , the number of optical ports of the low-speed optical gate N 2 , high-speed shutter speed Φ, low-speed shutter speed Φ / n 1 , Pulse laser repetition frequency Φ / n 1 no 2 , pulse laser width dt, single pulse laser energy dP, vapor arrival delay time t 2 -t 0 , steam ...

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Abstract

The invention relates to an anti-vacuum evaporation metal additive manufacturing device and its working and manufacturing method, wherein the device mainly includes a laser, a high-speed shutter, a low-speed shutter and an optical switch controller; the laser focusing head of the laser and the metal melting There are two types of gates: high-speed optical gate and low-speed optical gate; the pulsed laser acts on the surface of the metal material through the high-speed optical gate and the low-speed optical gate to melt it, and produces high-speed jet metal vapor and low-speed splash in the opposite direction of laser incidence. Metal droplets, steam and liquid droplets fly to the direction of the laser focusing head of the laser successively in a high vacuum environment. The outer side of the shutter baffle, in order to effectively protect the optical device, so that the metal additive manufacturing can be carried out in an orderly manner.

Description

technical field [0001] The invention relates to the field of extreme manufacturing technology, in particular to a vacuum-resistant metal additive manufacturing device and its working and manufacturing methods. Background technique [0002] Additive Manufacturing (AM), commonly known as 3D printing, combines computer-aided design, material processing and molding technology, based on digital model files, and uses software and numerical control systems to combine special metal materials, non-metal materials and medical biomaterials. , According to extrusion, sintering, melting, photo-curing, spraying and other ways to accumulate layer by layer, the manufacturing technology of manufacturing physical objects. Compared with the traditional processing mode of raw material removal, cutting, and assembly, it is a "bottom-up" manufacturing method through material accumulation, from scratch. This makes it possible to manufacture complex structural parts that were restricted by traditi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/342B23K26/062B23K26/70B23K26/12B33Y30/00B33Y10/00
CPCB33Y10/00B33Y30/00B23K26/062B23K26/1224B23K26/342B23K26/702
Inventor 张祺杨杰马红林王国玉范树迁
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI