WO2015180639A1 - Système pour fabriquer et former un élément métallique en trois dimensions à empilement à double fusion du type à résistance - Google Patents

Système pour fabriquer et former un élément métallique en trois dimensions à empilement à double fusion du type à résistance Download PDF

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Publication number
WO2015180639A1
WO2015180639A1 PCT/CN2015/079890 CN2015079890W WO2015180639A1 WO 2015180639 A1 WO2015180639 A1 WO 2015180639A1 CN 2015079890 W CN2015079890 W CN 2015079890W WO 2015180639 A1 WO2015180639 A1 WO 2015180639A1
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WO
WIPO (PCT)
Prior art keywords
forming
metal member
melt
forming system
dimensional metal
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Application number
PCT/CN2015/079890
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English (en)
Chinese (zh)
Inventor
赵晴堂
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赵晴堂
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Publication date
Application filed by 赵晴堂 filed Critical 赵晴堂
Publication of WO2015180639A1 publication Critical patent/WO2015180639A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting

Definitions

  • the present invention relates to the field of processing and manufacturing, and more particularly to a system for rapid three-dimensional forming of metal parts.
  • the metal heating and melting system of the current metal component "3d manufacturing technology” is very complicated and large, and the efficiency is low, and some have certain dangers.
  • the advantage of the laser melting system is that the temperature is high and the power is easy to control.
  • the disadvantages are that it is very complicated, bulky, easy to damage, and low in efficiency (up to about 30%).
  • the advantages of the electron beam melting system are high power and high efficiency.
  • the disadvantage is that the strong X-ray radiation generated during work is harmful to the human body and requires a very thick radiation shielding layer.
  • the advantage of the plasma melting system is that the system is simple and harmless to the human body, and the disadvantage is that the manufacturing precision is low.
  • the technical problem solved by the present invention is to provide a system for rapid three-dimensional forming of metal parts to solve the above-mentioned shortcomings in the background art.
  • Resistive double-melting laminated three-dimensional metal component manufacturing forming system utilizes electrical energy to directly convert electrical energy into thermal energy to melt metal materials by electrical resistance of metal materials, and uses metal remelting method to manufacture metal materials by liquid extrusion lamination. member. Thereby reducing the cost and manufacturing difficulty and improving the quality of the components.
  • the resistive double-melt laminated three-dimensional metal component manufacturing forming system consists of a melt forming system, a material release system, a cooling and anti-oxidant delivery system, and a high-power power supply.
  • the melt forming system includes a base, a cooler, a forming head, and a forming table.
  • the cooler wraps the inner part of the forming head, and has a plurality of cooling gas inlets located at a position of the cooler surface near the base, and a cooling gas nozzle is located at a front portion of the forming head and lower than the graphite electrode outside the molten pool, the cooler Can be cooled and formed
  • the inert cooling gas ejected from the head cools the liquid metal for rapid solidification, and the ejected gas can be wrapped on the surface of the workpiece semi-finished product so as not to be oxidized to form an oxide film.
  • the function of the pedestal is to position the forming head and the cooler.
  • the base is connected to the servo motor or stepper motor and moved to the specified position by computer control.
  • the forming head comprises a head body, a fuse conveyor, a molten pool, a graphite electrode in the molten pool, and a graphite electrode outside the molten pool.
  • the head body is fixed on the base, and the vent pipe in the forming head conveys the inert cooling gas in the oxidation protection tube to the cooler.
  • the fuse conveyor is located in the head body and is two runners driven by a motor.
  • the pair of coil clamping fuses rely on friction to transport the fuses into the molten pool.
  • the molten pool is located in a high temperature resistant high temperature ceramic of the head material.
  • the graphite electrodes in the molten pool are respectively located inside the molten pool, and the electrodes are in a state of long-term energization.
  • the metal fuse contacts a pair of graphite electrode circuits in the molten pool to form a passage, and the electric energy is made of a metal fuse. The resistance is converted into heat and the metal fuse is melted.
  • the graphite electrode outside the molten pool is located at the tip of the forming head, and the electrode is in a state of long-term energization.
  • the liquid metal flows through the molten pool to the graphite electrode outside the molten pool and flows out, the liquid metal contacts the forming table, and the workpiece or forming table on the forming table And the graphite electrode outside the molten pool forms a current path through the liquid metal to heat the liquid metal again, and if there is a workpiece semi-finished product, the surface of the workpiece semi-finished product is once again melted, so that the new metal layer will be more closely combined with the original metal layer. together.
  • the forming table is a metal plate having a graphite layer on its surface, and the forming table is energized to form an electric circuit with the graphite electrode outside the molten pool.
  • the material release system consists of a fuse roll and a fuse roll motor.
  • the fuse coil has a bobbin shape and is wound with a metal fuse.
  • the fuse is a metal material.
  • the fuse winding motor is a stepping motor, which is connected to the fuse coil, and determines how much the fuse is discharged according to the pulse electric signal given by the computer.
  • the cooling and anti-oxidant delivery system consists of a liquid inert gas storage evaporation can, an air pump, an oxidation protection tube and a connecting pipe.
  • the liquid inert gas storage evaporation tank is a tank for storing liquid gas, and the surface has a corrugation to increase the surface area to accelerate the evaporation of liquid nitrogen.
  • the air pump connects the anti-oxidation protection tube and the cooler through a connecting pipe.
  • the anti-oxidation protection tube is composed of a tube body and a rubber sealing port, and is filled with an inert gas.
  • the anti-oxidation protection tube is connected to the forming head and the air pump, and the fuse enters the forming head through the anti-oxidation protection tube, which can prevent the fuse from being oxidized and contaminated.
  • the high power power source is two step-down current transformers. One is for the graphite electrode in a pair of molten pools, one for The graphite electrode and the forming station outside the molten pool are powered.
  • the present invention is a novel three-dimensional metal part manufacturing forming system, and the resistance heating simplifies the system and reduces the cost.
  • the technological double-melting method combines the new surface with the already formed surface more tightly when manufacturing the workpiece to improve product quality.
  • the entire system not only greatly reduces manufacturing costs but also improves product quality.
  • Figure 1 is a schematic view of the structure of the present invention.
  • FIG. 2 is a schematic view showing the structure of a forming head and a cooler of the present invention.
  • pedestal 1 forming head 2 cooler 3 forming table 4 molten pool outside graphite electrode 5 anti-oxidation protection tube 6 fuse 7 fuse winding motor 8 fuse roll 9 air pump 10 liquid inert gas storage evaporation tank 11 graphite inside the molten pool Electrode power supply 12 Electrode outside the graphite electrode Power supply 13 Rubber sealing port 14 Inside the molten pool Graphite electrode 15 Forming head vent pipe 16 Fuse conveyor 17 Cooling inert gas inlet 18 Fuse inlet 19 Cooling gas vent 20.
  • the resistive double-melt laminated three-dimensional metal component manufacturing forming system consists of a material release system, a melt forming system, a cooling and anti-oxidant delivery system, and a high-power power supply.
  • the material release system includes a fuse roll 9 fuse roll motor 8, which initiates the discharge of the fuse 7 from the fuse roll 9 when the forming head 2 is moved to the designated position.
  • the cooling and anti-oxidation system is composed of an anti-oxidation protection tube 6 air pump 10, a liquid inert gas storage evaporation tank 11, and the fuse is discharged and then enters the anti-oxidation protection tube 6 through the rubber sealing port 14, and the anti-oxidation protection tube 6 can be cooled by using an inert gas for cooling.
  • the air pump 10 can deliver the cooling inert gas in the liquid inert gas storage evaporation can 11 to the cooler 3 and the oxidation protection pipe 6 in the melt forming system including the susceptor, the cooler 3, the forming head 2, and the forming table 4.
  • the cooler 3 is a metal casing shell wrapped around the outside of the forming head 2, and a plurality of cooling inert gas inlets 18 are provided outside the position of the susceptor 1.
  • a cooling gas vent 20 is located at the front of the forming head and the like is higher than the forming head. 2.
  • the forming head 20 includes a graphite electrode 15 in the molten pool of the fuse conveyor 17, and the graphite electrode 5 outside the molten pool is fixed on the base 1 with a plurality of pairs of forming head inner venting tubes 16 for inerting the oxidation protecting tube.
  • the cooling gas is delivered to the cooler 3.
  • the fuse conveyor 17 is located in the head body and is two runners driven by the motor. The pair of runners convey the fuses to the molten pool by frictional force according to the clamping fuses.
  • the graphite electrode 15 in the molten pool is a pair of electrodes located inside the forming head. When the fuse 7 contacts the two electrodes, the fuse is melted.
  • the graphite electrode 5 outside the molten pool is an electrode outside the forming head, and the graphite electrode 5 outside the molten pool forms an electric circuit with the forming table 4.
  • the graphite electrode 5 outside the molten pool forms a passage with the forming table 4, and the molten metal is heated again, if there is a positive on the forming table
  • the workpiece is manufactured, when the molten metal contacts the last formed surface of the workpiece, the last formed table The surface is melted again and the new metal material is tightly integrated with the already formed metal material.
  • the high-power power supplies 12 and 13 are two AC buck-up transformers that can withstand large operating currents.
  • the fuse when the workpiece is manufactured, the fuse enters the molten pool and the electrode is melted and then flows out from the outer electrode of the molten pool to the forming table to be heated again. If the workpiece is being fabricated on the forming table, when the molten metal contacts the workpiece, the last formed shape On the surface, the last formed surface will be melted again, and the new metal material will be tightly integrated with the already formed metal material.
  • the inert cooling gas ejected from the cooler can cool and protect the workpiece being manufactured while forming a good crystallization environment for external cooling inside the part being formed, so that the newly laid metal layer and the last laid metal layer are very good. integrate.

Abstract

L'invention porte sur un système pour fabriquer et former un élément métallique en trois dimensions à empilement à double fusion du type à résistance, dans lequel système une résistance est utilisée pour chauffer des matériaux, et un procédé de refusion secondaire est adopté pour fabriquer rapidement des pièces métalliques. Le système comprend un système de fusion et de formation, un système de relâchement de matériau, un système de refroidissement et de transport d'antioxydant, et une source d'alimentation de forte puissance. Le système de fusion et de formation comprend une base (1), un refroidisseur (3), une tête de formation (2) et une table de formation (4). Le système de relâchement de matériau comprend un volume de matériau de fusion (9) et un moteur de volume de matériau de fusion (8) pour relâcher un matériau de fusion (7). Le système de refroidissement et de transport d'antioxydant comprend un réservoir de stockage et d'évaporation de gaz inerte liquide (11), une pompe à air (10), un tuyau de protection anti-oxydation (6) et une tubulure de liaison. La tête de formation (2) comprend un transporteur de matériau de fusion (17), une électrode en graphite à l'intérieur d'un bain de fusion (15), et une électrode en graphite à l'extérieur d'un bain de fusion (5). Le système de formation permet une formation en trois dimensions rapide d'une pièce métallique, et résout les problèmes de coût élevé, de faible densité de la pièce fabriquée et de médiocre qualité dans l'état de la technique.
PCT/CN2015/079890 2014-05-28 2015-05-27 Système pour fabriquer et former un élément métallique en trois dimensions à empilement à double fusion du type à résistance WO2015180639A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2014102331136 2014-05-28
CN201410233113.6A CN104001918B (zh) 2014-05-28 2014-05-28 电阻式双熔层叠三维金属构件制造成形系统

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WO2015180639A1 true WO2015180639A1 (fr) 2015-12-03

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CN (1) CN104001918B (fr)
WO (1) WO2015180639A1 (fr)

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EP3229997A4 (fr) * 2014-12-12 2018-10-03 Digital Alloys Incorporated Fabrication par couches de structures métalliques
EP3389982A4 (fr) * 2015-12-16 2019-05-22 Desktop Metal, Inc. Procédés et systèmes destinés à la fabrication additive
CN111483142A (zh) * 2019-01-25 2020-08-04 东莞一迈智能科技有限公司 一种液冷快拆式双头3d打印机
KR20210070390A (ko) * 2017-11-15 2021-06-14 그라낫 리서치, 리미티드 금속 액적 분사 시스템
US11853033B1 (en) 2019-07-26 2023-12-26 Relativity Space, Inc. Systems and methods for using wire printing process data to predict material properties and part quality

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CN104001918B (zh) * 2014-05-28 2017-01-18 赵晴堂 电阻式双熔层叠三维金属构件制造成形系统
CN104722761B (zh) * 2015-03-27 2016-10-19 赵晴堂 三维成形热熔系统
CN105081321B (zh) * 2015-08-24 2017-04-12 大连交通大学 激光3d打印成形非晶态金属构件冷却系统及其冷却方法
CN106560315A (zh) * 2015-10-01 2017-04-12 罗天珍 瞬变量挤出成型方法及其fdm‑3d打印机
CN105880598B (zh) * 2016-06-03 2018-02-09 梁福鹏 一种金属三维打印方法及其设备
CN106180709B (zh) * 2016-07-08 2019-06-28 南京钛陶智能系统有限责任公司 一种金属三维打印方法及其设备
CN106270518B (zh) * 2016-09-05 2019-03-12 南京钛陶智能系统有限责任公司 一种用于金属三维打印的液滴生成方法
CN106424725B (zh) * 2016-09-09 2019-07-05 赵晴堂 三段式热熔金属物料增材成型的方法

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EP3229997A4 (fr) * 2014-12-12 2018-10-03 Digital Alloys Incorporated Fabrication par couches de structures métalliques
US10335889B2 (en) 2014-12-12 2019-07-02 Digital Alloys Incorporated Systems for printing three-dimensional objects
US11813690B2 (en) 2014-12-12 2023-11-14 Relativity Space, Inc. Systems for printing three-dimensional objects
EP3389982A4 (fr) * 2015-12-16 2019-05-22 Desktop Metal, Inc. Procédés et systèmes destinés à la fabrication additive
KR20210070390A (ko) * 2017-11-15 2021-06-14 그라낫 리서치, 리미티드 금속 액적 분사 시스템
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CN111483142A (zh) * 2019-01-25 2020-08-04 东莞一迈智能科技有限公司 一种液冷快拆式双头3d打印机
US11853033B1 (en) 2019-07-26 2023-12-26 Relativity Space, Inc. Systems and methods for using wire printing process data to predict material properties and part quality

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CN104001918B (zh) 2017-01-18

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