Pulse on-off valve type metal 3D printing device

A technology of 3D printing and on-off valve, which is applied in the direction of additive manufacturing, process efficiency improvement, additive processing, etc. It can solve the problems of difficult control of ejection speed and deposition accuracy, impurity removal and purification of melt, and low viscosity of molten metal To achieve high-precision spray deposition forming, avoid uneven solidification, and improve printing accuracy

Active Publication Date: 2017-02-08
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the spray deposition rate is high, it is difficult to control the spray rate and deposition accuracy due to the low viscosity of the metal liquid
Moreover, the structure of traditional equipment is relatively simple, and the function is relatively single, and it is impossible to realize the functions such as impurity removal and purification of the melt.

Method used

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  • Pulse on-off valve type metal 3D printing device
  • Pulse on-off valve type metal 3D printing device
  • Pulse on-off valve type metal 3D printing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]A pulse on-off valve-type metal 3D printing device, which consists of: a vacuum system that provides a vacuum environment for the spray deposition process, a spray head (7) for realizing precise control of metal spray forming, and a multi-stage purification system for refining molten metal A device, a printing substrate (4) providing a stable deposition and forming environment, and a three-axis motion platform for realizing directional deposition of molten metal. , in order to realize the measurement and control part of the whole fused deposition process in a stable and orderly manner.

Embodiment 2

[0037] Before the spray deposition 3D printing starts, the printed metal material is put into the solid metal melting device (14), the two-stage vacuum pump (1) works, the vacuum valve (2) is opened, and the entire printing system is evacuated through the vacuum pipeline (3). After a certain degree of vacuum is reached, the metal material is heated by induction, and the refining agent is added, and the stirring rod (18) driven by the fixed ring (17) moves to make the refining agent diffuse evenly and generate slag. After the alloy is completely melted, carry out the slag removal treatment, and let it stand for a period of time to stabilize the alloy composition. Turn on the next-level melting device (9), and when the temperature reaches the preset value, pour the molten metal from the upper-level melting device into the current-level melting device, filter through the filter screen (11), and close the pressure cover (12) after completion. The pressure cover is connected with t...

Embodiment 3

[0039] Stable air pressure on the surface of the melt is realized by the air pressure control system, the pressure data is collected by the pressure sensor (23), and uploaded to the industrial computer for collection and analysis. When the air pressure is higher than the set value, open the solenoid valve (33) to communicate with the exhaust pipe (34) to deflate the system and reduce the pressure; when the air pressure is lower than the set value, open the solenoid valve (33) to communicate with the gas cylinder ( 31), inflate the system to increase the pressure.

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PUM

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Abstract

The invention discloses a pulse on-off valve type metal 3D printing device capable of realizing precise spray-deposition 3D printing formation of molten metal under the control of a pulse on-off valve. More specifically, the pulse on-off valve type metal 3D printing device is characterized in that a metal liquid is purified through melting and filtering, the precise controllable continuous spray of the molten metal is realized through controlling the pulse on-off of a rotating blade-shaped valve at a printing spray head, the movement of the spray head is controlled through a three-dimensional coordinate platform, a forming platform is provided with stable temperature by a printing substrate, and low-cost additive manufacturing equipment capable of realizing rapid metal melting, multistage purification and precise controllable spray deposition is finally designed.

Description

technical field [0001] The invention is mainly applied in the field of additive manufacturing of metal materials, and relates to a precise spray deposition forming device capable of realizing molten metal under the control of a pulse on-off valve. In more detail, the present invention is characterized in that the molten metal is purified through multi-stage melting and multi-stage filtration, and the precise and controllable injection of the molten metal is realized by controlling the pulsed on-off of the valve at the printing nozzle. Background technique [0002] 3D printing technology appeared in the 1980s. It is a technology that uses the method of gradually accumulating materials to manufacture solid parts. Compared with the traditional material removal-cutting technology, it is a "bottom-up" manufacturing method. . This technology does not require traditional tools and fixtures and multiple processing procedures, and can quickly and precisely manufacture parts of any c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/115B22F3/105B33Y30/00B33Y50/02
CPCB22F3/1007B22F3/115B33Y30/00B33Y50/02B22F2999/00B22F10/00B22F12/30B22F10/31B22F12/10B22F12/226B22F12/90B22F10/32B22F10/22B22F10/50B22F2201/10Y02P10/25
Inventor 单忠德范聪泽杨立宁戎文娟杨硕
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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