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A pulse on-off valve metal 3D printing device

A 3D printing, on-off valve technology, applied in the direction of additive manufacturing, process efficiency improvement, additive processing, etc., can solve the problem 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: 2019-11-05
BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD
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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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  • A pulse on-off valve metal 3D printing device
  • A pulse on-off valve metal 3D printing device
  • A pulse on-off valve metal 3D printing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]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, a three-axis motion platform for realizing directional deposition of molten metal, and a part for measuring and controlling in a stable and orderly manner for realizing the entire fusion deposition process.

Embodiment 2

[0038] Before spray deposition 3D printing starts, the printed metal material is put into the solid metal primary melting device (14), the two-stage vacuum pump (1) works, the vacuum valve (2) is opened, and the entire equipment shell ( 19) Vacuumize the packaged printing system. After reaching a certain degree of vacuum, start to use the induction heating device (13) connected to the solid metal melting device (15) for metal materials, add refining agent, and the stirring rod driven by the fixed ring (17) ( 18) The movement makes the refining agent spread evenly and produces slag. After the alloy is completely melted, the slag removal treatment is carried out, and the alloy composition is stabilized after standing for a period of time to form a uniform primary metal melt (16). Open the metal melt (9) in the next-level melting device, which has a pressure cover (12) connected by bolts (25), so that the internal gas pressure can be maintained, and the temperature is raised by t...

Embodiment 3

[0040] Stable air pressure on the surface of the melt is realized by the air pressure control system (22), and the pressure data is collected by the pressure sensor (23), uploaded to the industrial computer for collection and analysis. The air pressure is adjusted by connecting the pressure pipe (21), and the flow rate of the gas is stabilized by the pressure reducing and stabilizing valve (32). When the air pressure is lower than the set value, open the solenoid valve (33) to communicate with the gas cylinder (35) to 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, which can realize precise jet deposition 3D printing of 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 by melting and filtering, and the precise and controllable continuous injection of the molten metal is realized by controlling the pulsed on-off of the rotary blade-shaped valve at the printing nozzle, and controlled by a three-dimensional coordinate platform. The movement of the nozzle, the printing substrate provides a stable temperature for the forming platform, and finally designs a low-cost additive manufacturing equipment that can achieve rapid metal melting, multi-stage purification, and precise and controllable spray deposition.

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 Patents(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 BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD