• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1503635 Making metal powder LEYBOLDHERAEUS-VERWALTUNG GmbH 2 June 1976 28 June 1975 22859/76 Heading C7X In a method of producing metal powder, a rod of the metal is progressively melted by an electron beam in a vacuum, the droplets falling on to a rotating plate which throws off particles of molten metal, wherein the rotating plate is scanned by the focal spot of an electron beam to traverse a radial zone on the plate Fig. 5 (not shown). Molten droplets from rotating rod 12 fall on to plate 17 and are thrown along flight path 30 where they solidify by radiation and fall into receptacle 34, the plate being scanned by an electron beam from gun 26. The plate 17 rotates at 3,600-15,000rpm, and the diameter of the focal spot is 0À01 to 0À1 of the plate diameter. In a modified apparatus Fig. 3, (not shown) the rod 12 is fed horizontally, the melt droplets initially falling into a container (36) and heated by a further electron beam (38) before passing to plate 17 via an overflow (37). The plate 17, Fig. 4, preferably comprises an upper member 18 (of the same material as rod 12) attached to rotatable base-plate 19 (with provision for watercooling), the upper member 18 having a central recess 47 and conical portion 49.
    公开号:SU860683A1
    申请号:SU762353704
    申请日:1976-05-03
    公开日:1981-08-30
    发明作者:Штефан Херберт；Айхерт Ханс；Хаймерль Йозеф
    申请人:Лейбольд Хероз Гмбх Унд Ко.Кг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to powder metallurgy, in particular, to methods for producing metal powders by centrifugal spraying of molten metal and installations for carrying out centrifugal spraying. A known method for producing metallic powders involves melting a metal with an electron beam and centrifugally spraying the melt by crushing a melted metal. Also known is an apparatus for implementing this method, including a vacuum chamber, an electron gun, a device for fixing the sprayed metal and driving it back; 1. However, these method and apparatus for producing metal powders do not allow the production of particles of a given size, and therefore their practical applicability is limited. The closest to the proposed technical essence and the achieved effect are the method of obtaining metal powders and the installation for implementing this method. The known method includes the electron-beam melting of the original rod metal in vacuum, feeding the melt onto the surface of the rotating disk and centrifugal spraying of the melt, and the installation for implementing the method is a vacuum chamber, a device for fixing the original rod metal, an electron-beam melt and a collecting tank powder, while the disk is installed in the center of the vacuum chamber and is made in the form of a conical cup, and the chamber is equipped with vacuum closures. The disadvantages of the known technical solution are the inability to obtain spherical particles of a given size due to the high viscosity of the melt located on the disk surface and the limited radial size of the cylindrical vacuum chamber. The purpose of the invention is the manufacture of spherical particles of a given size. To achieve this goal, the molten metal on the disk surface is additionally heated with a scanning electron beam, the diameter of which is smaller than the diameter of the disk, and the beam is scanned.
    radially with respect to the axis of the disk.
    In addition, in the installation for carrying out the method, the vacuum chamber is made up of a disk expanding in the direction perpendicular to the axis and provided with a nozzle in which a device for fixing the starting metal is installed, one of the electron beam guns is equipped with a device for scanning the beam, the disk is mounted eccentrically to the camera axis and central notch.
    On fi1. 1 shows a plant for the preparation of metal powders, a longitudinal section; in fig. 2 - the same cross section; in fig. 3 — disk for centrifugal spraying, longitudinal section; in fig. 4 - the same, top view.
    The installation consists of a vacuum chamber 1 made horizontally expanding, a device 2 made in the form of an electrode rod with a branch pipe 3 and equipped with a drive 4, a nozzle 5 mounted above the chamber and provided with a vacuum gate 6, a disk 7 consisting of a replaceable upper a part 8 made of a material similar to the sprayed one and the bottom part of a table U mounted on a shaft 10 connected to a drive 11 and provided with a vacuum seal 12, a bearing 13 and a connecting head 14 for supplying ox / 1 imposing water .
    Electron beam guns 15 and 16 are mounted inside chamber 1, one of which (15) is designed to melt the metal, and the other (16) is equipped with a beam scanning device 17 and is intended to add additional heat to the molten metal on the surface of the disk 7. The beam is scanned along disc radius (downstream from the center of the disc in the plane of Fig. 2}. Guns 15 and 16 are connected to a high voltage source 18. Chamber 1 is connected to a vacuum pump 19. Trajectories 20 diverge as they move away from the disc with a small opening angle. Corner The opening of the particle flow corresponds to the cross-sectional shape of the inner cavity of the vacuum chamber. powder.
    The upper part 8 of the disk is connected to the table 9 by means of a dovetail connection 25. The table is made with a channel 26 for a refrigerant (in particular water) connected to the shaft 10 and provided with a concentric pipe 27. At the top of the disk is made
    central hemispherical recess 28, to the circumferential edge 29 of which transition zone 30 fits, designed as a divergent truncated cone and ending with a chamfer 31 around the circumference of disc 7. At the same time, the radius of curvature of the recess is 0.61, 0 of the cone base diameter ( respectively, R and Di in Fig. 3).
    In addition, in FIG. 4, an electron beam scanning amplitude 32 and paths 33 of movement of individual particles along the disk surface are indicated.
    The implementation of the proposed method in the process of installation is as follows.
    The melt droplets formed during melting of the front end of the metal arrive at the rotating disk 7, on the surface of which the electron beam scans in the radial direction. When this occurs, additional heating of the molten metal and its centrifugal spraying,. disk rotation is 3,600,100 rpm, the rotational speed of the original preform is 5 to 20 rpm, the scanning frequency of the electron beam is 30-100 Hz, the diameter of the electron beam vyr :. between 0.1 and 0.01 disk diameter.
    In one embodiment, the proposed device can be made with an intermediate beam heated by an electron beam, equipped with a drainage chute. In this case, the tank is installed directly under the molten Eg of the first end of the syngnese metal, and the drain chute is above the disk. Such an embodiment of the device makes it possible to lengthen the residence time of the metal in the molten state and increase its degree of purification from impurities.
    Using the proposed method and device for its implementation allows improving the quality of metal powders by increasing their purity and homogeneity of the fractional composition.
    权利要求:
    Claims (2)
    [1]
    1. A method of producing metal powders, comprising electron-beam melting of a metal preform in vacuum, melt feed to the surface of a rotating disk and centrifugal melting of the melt, characterized in that, in order to manufacture spherical particles of a given size, the molten metal on the disk surface is additionally heated by a scanning electron beam, the diameter of which is less than the diameter of the disk, while ska; - beam is carried out in the radial direction with respect to the axis of the digco.
    [2]
    2. An apparatus for carrying out the method according to claim 1, comprising a vacuum chamber, a device for securing a rod metal blank, electron beam guns, a disk for centrifugally spraying the melt and a container for collecting powder, characterized in that the vacuum chamber is expanding in the direction perpendicular the disk axis and is equipped with a nozzle in which a device for securing a metal billet is installed, one of) the electron-beam guns is equipped with a device for scanning the beam, and the disk for centrifugal The spraying device is mounted eccentrically to the camera axis and is made with a central recess.
    Sources of information taken into account in the examination
    1, the patent of Germany No. 1783089, cl. 31 September 23/08, 1971.
    17
    PlJf.2
    类似技术:
    公开号 | 公开日 | 专利标题
    SU860683A1|1981-08-30|Method and unit for producing metallic powders
    US4218410A|1980-08-19|Method for the production of high-purity metal powder by means of electron beam heating
    US4474604A|1984-10-02|Method of producing high-grade metal or alloy powder
    CN87106354A|1988-03-30|The method and apparatus of manufacturing and further processing metallic substances
    DE4221512C2|1996-08-14|Process for producing rapidly solidified, flaky metal powder and device for producing the same
    US4482375A|1984-11-13|Laser melt spin atomized metal powder and process
    US2356599A|1944-08-22|Process and apparatus for comminuting liquid substances
    EP0931611A2|1999-07-28|Manufacture of large diameter spray formed components
    US4178335A|1979-12-11|Method of producing solid particles of metal
    US2439776A|1948-04-13|Apparatus for forming solidified particles from molten material
    US4639567A|1987-01-27|Method and apparatus for melting rod-shaped material with an induction coil
    US4036568A|1977-07-19|Machines for manufacture of powders
    EP0452685B1|1995-01-04|Method of and apparatus for producing metal powder
    US4067674A|1978-01-10|Furnace for the production of spherical particles
    SU933264A1|1982-06-07|Apparatus for producing bimetallic powder by melt spraying
    JPS6462405A|1989-03-08|Apparatus for producing rotating disk type metal powder
    US3428182A|1969-02-18|Centrifugal machine
    JP2808836B2|1998-10-08|Powder manufacturing apparatus and powder manufacturing method
    SU422536A1|1974-04-05|DEVICE FOR OBTAINING SPRAY POWDERS
    RU2762455C1|2021-12-21|Method for creating structural gradient powder materials
    US2904859A|1959-09-22|Method and apparatus for producing metal filaments
    RU2742125C1|2021-02-02|Device for production of metal powders by centrifugal spraying method
    CN209918887U|2020-01-10|Adjustable coaxial powder feeding laser direct deposition nozzle
    RU1785824C|1993-01-07|Device for spraying molten metal
    SU1708525A1|1992-01-30|Apparatus for producing amorphous metal powders
    同族专利:
    公开号 | 公开日
    AT357006B|1980-06-10|
    CS193076B2|1979-09-17|
    SE406282B|1979-02-05|
    FR2317040A1|1977-02-04|
    GB1503635A|1978-03-15|
    JPS525659A|1977-01-17|
    FR2317040B1|1982-05-21|
    DE2528999A1|1977-01-27|
    ATA455576A|1979-10-15|
    BR7603714A|1977-01-25|
    NL7605120A|1976-12-30|
    DE2528999C2|1984-08-23|
    AR213094A1|1978-12-15|
    CA1077210A|1980-05-13|
    SE7605657L|1976-12-29|
    US4295808A|1981-10-20|
    DD123932A1|1977-01-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2699431C1|2018-12-10|2019-09-05|Государственный научный центр Российской Федерации - федеральное государственное унитарное предприятие "Исследовательский Центр имени М.В. Келдыша"|Method of producing spherical metal powders and apparatus for its implementation|US3275787A|1963-12-30|1966-09-27|Gen Electric|Process and apparatus for producing particles by electron melting and ultrasonic agitation|
    US3582529A|1969-09-24|1971-06-01|Air Reduction|Electron beam heating apparatus and control system therein|
    US3721511A|1971-02-18|1973-03-20|M Schlienger|Rotating arc furnace crucible|
    US3869232A|1971-03-15|1975-03-04|Leybold Heraeus Verwaltung|Apparatus for preparing pellets by means of beams of charged particles|
    US3829538A|1972-10-03|1974-08-13|Special Metals Corp|Control method and apparatus for the production of powder metal|
    US3963812A|1975-01-30|1976-06-15|Schlienger, Inc.|Method and apparatus for making high purity metallic powder|SU933122A1|1977-03-22|1982-06-07|Предприятие П/Я Г-4361|Apparatus for producing pellets|
    US4190404A|1977-12-14|1980-02-26|United Technologies Corporation|Method and apparatus for removing inclusion contaminants from metals and alloys|
    DE3024752C2|1980-06-30|1988-02-25|Leybold-Heraeus Gmbh, 5000 Koeln, De|
    US4435342A|1981-11-04|1984-03-06|Wentzell Jospeh M|Methods for producing very fine particle size metal powders|
    DE3211861A1|1982-03-31|1983-10-06|Leybold Heraeus Gmbh & Co Kg|METHOD AND DEVICE FOR PRODUCING HIGH-PURITY CERAMIC-FREE METAL POWDERS|
    JPS6136561B2|1982-06-01|1986-08-19|Ulvac Corp|
    EP0134808B1|1983-01-24|1990-09-12|Gte Products Corporation|Method for making ultrafine metal powder|
    US4488031A|1983-04-13|1984-12-11|Nuclear Metals, Inc.|Rotary electrode disc apparatus|
    FR2545202B1|1983-04-29|1989-04-07|Commissariat Energie Atomique|METHOD AND DEVICE FOR COOLING A MATERIAL AND APPLICATION TO THE PREPARATION OF REFRACTORY MATERIALS BY TEMPERING|
    GB2142046B|1983-06-23|1987-01-07|Gen Electric|Method and apparatus for making alloy powder|
    US5120352A|1983-06-23|1992-06-09|General Electric Company|Method and apparatus for making alloy powder|
    JPS60162703A|1984-02-04|1985-08-24|Agency Of Ind Science & Technol|Production of metallic powder|
    DE3518829A1|1985-05-24|1986-11-27|Heliotronic Forschungs- und Entwicklungsgesellschaft für Solarzellen-Grundstoffe mbH, 8263 Burghausen|METHOD FOR THE PRODUCTION OF MOLDED BODIES FROM SILICON GRANULES FOR THE PRODUCTION OF SILICONE MELTS|
    US4689074A|1985-07-03|1987-08-25|Iit Research Institute|Method and apparatus for forming ultrafine metal powders|
    US5093602A|1989-11-17|1992-03-03|Charged Injection Corporation|Methods and apparatus for dispersing a fluent material utilizing an electron beam|
    US5268018A|1991-11-05|1993-12-07|General Electric Company|Controlled process for the production of a spray of atomized metal droplets|
    US5176874A|1991-11-05|1993-01-05|General Electric Company|Controlled process for the production of a spray of atomized metal droplets|
    US5171358A|1991-11-05|1992-12-15|General Electric Company|Apparatus for producing solidified metals of high cleanliness|
    US7829011B2|2007-12-10|2010-11-09|The Boeing Company|Metal powder production system and method|
    KR101605050B1|2008-06-27|2016-03-21|커먼웰쓰 사이언티픽 앤드 인더스트리얼 리서치 오가니제이션|Rotary atomiser for atomising molten material|
    US8057203B2|2008-10-02|2011-11-15|Gap Engineering LLC|Pyrospherelator|
    US8344281B2|2009-04-28|2013-01-01|The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration|Use of beam deflection to control an electron beam wire deposition process|
    GB2500039A|2012-03-08|2013-09-11|Siemens Plc|Rotary slag granulator with an annular metal disc and central cylinder containing plug of refractory material|
    GB2500038A|2012-03-08|2013-09-11|Siemens Plc|Rotary slag atomising granulator with metal disk and cooling system|
    US10689196B2|2012-10-10|2020-06-23|Xyleco, Inc.|Processing materials|
    KR20150067144A|2012-10-10|2015-06-17|질레코 인코포레이티드|Equipment protecting enclosures|
    JP6516624B2|2015-08-11|2019-05-22|株式会社ディスコ|Laser processing equipment|
    JP2019530803A|2016-09-23|2019-10-24|オーロラ ラブス リミテッド|Powder forming apparatus and powder forming process|
    CN109202095A|2018-11-09|2019-01-15|中国工程物理研究院机械制造工艺研究所|Metal material based on electron-beam melting is centrifuged milling method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2528999A|DE2528999C2|1975-06-28|1975-06-28|Process and device for the production of high-purity metal powder by means of electron beam heating|
    [返回顶部]