EP1008407B1 - Einrichtung und Verfahren zur Herstellung von Metallpulver in Kapseln durch Verdüsung von Schmelzen - Google Patents

Einrichtung und Verfahren zur Herstellung von Metallpulver in Kapseln durch Verdüsung von Schmelzen Download PDF

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Publication number
EP1008407B1
EP1008407B1 EP99890354A EP99890354A EP1008407B1 EP 1008407 B1 EP1008407 B1 EP 1008407B1 EP 99890354 A EP99890354 A EP 99890354A EP 99890354 A EP99890354 A EP 99890354A EP 1008407 B1 EP1008407 B1 EP 1008407B1
Authority
EP
European Patent Office
Prior art keywords
powder
metal
metal powder
gas
separator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99890354A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1008407A3 (de
EP1008407A2 (de
Inventor
Claes Tornberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voestalpine Boehler Edelstahl GmbH
Original Assignee
Boehler Edelstahl GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boehler Edelstahl GmbH filed Critical Boehler Edelstahl GmbH
Publication of EP1008407A2 publication Critical patent/EP1008407A2/de
Publication of EP1008407A3 publication Critical patent/EP1008407A3/de
Application granted granted Critical
Publication of EP1008407B1 publication Critical patent/EP1008407B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0896—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid particle transport, separation: process and apparatus

Definitions

  • the invention relates to a device and to a method for Creation of starting material for powder metallurgy parts.
  • the invention relates to a device for the production of Metal powder from melts with at least one metallurgical vessel for Treating and / or providing the liquid metal, a Atomizing chamber with a nozzle part for atomizing the liquid metal, a separator for a classification of the formed metal powder, a Encapsulation system for introducing and closing it in a container as well as conveying and connecting means for powder transport in the device and Lines with regulators and terminals and the like for the provision of Verdüsungsmedien.
  • the invention comprises a method for the production of metal powder Melting, wherein liquid metal from a metallurgical vessel into a Atomizing introduced, in this by means of a gaseous medium atomized solidified and classed and formed in such a formed metal powder Capsules is filled, after which they are closed and further processing be supplied.
  • a method for the production of metal powder Melting wherein liquid metal from a metallurgical vessel into a Atomizing introduced, in this by means of a gaseous medium atomized solidified and classed and formed in such a formed metal powder Capsules is filled, after which they are closed and further processing be supplied.
  • the cheap Structural and in particular mechanical property features are compared with conventional goods, with high-alloyed PM materials improved because they have no gross primary excretion, even if the respective content of these precipitating elements is high
  • a powder metallurgical production of workpieces is essentially such that a molten metal in a thin stream into a cavity, a so-called Verdüsungshunt, introduced and the melt stream by means of one, a high kinetic energy having or effecting gas flow from nozzles, is divided into small droplets.
  • the droplets freeze when further wandering the chamber in a very short time and are called Powder grains collected. Then there is a further cooling and optionally a classification of the metal powder, which ultimately in a Metal capsule is enclosed, whereupon the capsules at a pressing be subjected to high temperature.
  • This hot pressing can be done by forging or rolling the deformation temperature brought capsules or by a hot-isostatic pressing (HIP-en) are carried out the same, wherein a Together sintering of the powder grains and a disappearance of the cavities between these erfollgen and a completely dense workpiece with extreme fine-grained all-around homogeneous structure arises.
  • HIP-en hot-isostatic pressing
  • a device for metal powder production can be a, substantially vertical or have a substantially horizontal atomization chamber, depending on the which Verdüsgungsart or direction is provided for the molten metal.
  • the invention is based on the object to provide apparatus for the production of metal powder from melts, which favored preferential solidification criteria of metal droplets, a special Having atomization chamber, an advantageous simple powder delivery in the Equipment used, closest possible powder grain packing for filling of Capsules provides and low overall height of the device as well as high Economy in the creation of facilities has.
  • the object of a device of the type mentioned is According to the invention solved in that the atomization chamber, which entry side is in communication with the metallurgical vessel and in its longitudinal extent is formed inclined at an angle down, discharge with a Um arrangementssteil interacts, to which part in continuation of the conveyor for the powder, an upturned tube connects and this riser in a disintegrator upstream of the separator opens, wherein the with the Desintegrator connected via a diverter valve connects with a separator a collecting container which itself with the interposition of a Shut-off device with an encapsulation system or powder capsule in conjunction can be brought.
  • the positioned after the riser in a high position disintegrator has the Advantage that the powder with the use of gravity easily a separator can be supplied, after which in the same way then the selected Powder fractions can be introduced into a collecting container.
  • the collection container has according to the invention on the discharge side a shut-off, so if necessary large quantities of powder according to the requirements in a variety of small Capsules can be bottled.
  • the parts atomizing chamber, riser, disintegrator, and separator Collecting container each at least one short-term detachable and attachable Have cleaning closure means or a similar cleaning opening and that the bypass part is designed to be removable.
  • the bypass part undloder the riser at least one feed for the pipe in the upward Directed effective carrier gas (s), are particularly favorable tunable Flow conditions and thus an advantageous powder delivery in the Facility accessible and it can be particularly effective the respective Internal pressure conditions are set up.
  • the powder which often during the manufacturing process, if necessary Depending on the batch, with different grain sizes over time, can occur a contribution into a capsule to be further treated, if the Collecting container on the bottom side at least one connection for the supply of gas to Homogenization of the powder fraction has.
  • the capacity of the collecting tank corresponds to the quantity of powder that is made a batch of liquid metal can be created in the distributor.
  • a pressure is adjustable, the order is more than 0.1 bar above ambient pressure.
  • the further aim of the invention is characterized in a generic method achieved that formed in the obliquely downwardly inclined atomization chamber Metal powder in the lower or discharge side area of the same merged, used in a downstream bypass part, introduced by means Conveyed gas in a pipe guide upwards into a disintegrator, in particular into a cyclone separator, introduced, disintegrated and subsequently is classified, whereupon the desired fractions of the powder in a container collected, in this flows through from below with gas and mixed in such a way whereupon after collection of a desired amount of homogenized powder Introducing the metal powder into a capsule and closing it respectively.
  • the advantages of the method according to the invention are, in particular, that at a sputtering of the liquid metal stream in the inclined Verdüsungshunt the trajectory of the droplets is increased and by the Atomizing medium early solidification and effective cooling the powder grains are effected.
  • the transport of the powder takes place with comparatively low gas flow through the chamber, so that a collecting and introducing the grains in the bypass part under favorable conditions given is.
  • the powder by conveying gas, which is a exerts further cooling effect, conveyed upwards and subsequently disintegrated, classified and placed in the sump, what plant and procedurally by a low heat load and by the Gravity effect is advantageous executable.
  • Particularly effective and Gütsteigernd for use in capsules according to the invention is a flow of the powder in the collecting tank with gas from below, because with it not only one homogeneous powder mixture formed but also a dense powder grain packing can be achieved.
  • An oxidation of the powder grain surfaces and an internal Inertgasbelastung Hot compacting to non-porous workpieces is preventable when the Production of the metal powder and its encapsulation while avoiding the ingress of air or at an overpressure of inert gas in the system.
  • each in one first process step atomized a charge or melt to metal powder and this is introduced after processing in at least one capsule and in this which is then postponed in a subsequent step of the process the arranged in the individual parts of the device cleaning closures carried out and the equipment parts are cleaned of powder residues, after which the cleaning openings are sealed and providing the Device for atomization of another batch takes place.
  • a molten metal is in one metallurgical vessel 2 and provided by means of a nozzle in the form of a thin Metal stream introduced into a Verdüsungshunt 3.
  • the metal stream 3 is through one of a gas nozzle part 12 in the upper region of the atomization chamber 3 exiting gas stream with high kinetic energy atomized and thereby formed powder grains are introduced into a bypass part 4.
  • a Delivery gas supply line 13 from the compressed gas line system 10 is an upward directed promotion of the powder in a riser 5, which by means of a Supply pipe 51 is connected to a disintegrator 6.
  • the atomizing and conveying gas is from the disintegrator in a gas return line 15 under Interposition of a filter 16, a gas cooler 17 and a fine filter 18th a pump 11 fed again.
  • a continuation of the metal powder from the Disintegrator 6 takes place with the interposition of a deflection valve 61 which a scrap portion of a powder scrap container 71 can be fed, wherein a Carrying into a separator 7 takes place.
  • desired powder fractions are subsequently in a collecting container. 8 introduced and at least temporarily in this by a mixed gas fed 14th homogenized.
  • a shut-off device 81 from the collecting container can processed metal powder of a molten metal 1 or a batch in one or in several powder capsule (s) are introduced.
  • the atomizing chamber 3 has a removable cover 31 of an upper cleaning opening and is discharge side to open by a method of the deflection part 4.
  • the riser 5 and the disintegrator 6 of Powder residues are cleaned.
  • the separator 7 and the Collecting 8 possible by removing the container covers.

Landscapes

  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
EP99890354A 1998-12-09 1999-11-04 Einrichtung und Verfahren zur Herstellung von Metallpulver in Kapseln durch Verdüsung von Schmelzen Expired - Lifetime EP1008407B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT206698 1998-12-09
AT0206698A AT407620B (de) 1998-12-09 1998-12-09 Einrichtung und verfahren zur herstellung von metallpulver in kapseln

Publications (3)

Publication Number Publication Date
EP1008407A2 EP1008407A2 (de) 2000-06-14
EP1008407A3 EP1008407A3 (de) 2004-06-09
EP1008407B1 true EP1008407B1 (de) 2005-08-17

Family

ID=3527050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99890354A Expired - Lifetime EP1008407B1 (de) 1998-12-09 1999-11-04 Einrichtung und Verfahren zur Herstellung von Metallpulver in Kapseln durch Verdüsung von Schmelzen

Country Status (11)

Country Link
US (1) US6405512B1 (zh)
EP (1) EP1008407B1 (zh)
JP (1) JP4148308B2 (zh)
AT (2) AT407620B (zh)
BR (1) BR9907410A (zh)
DE (1) DE59912426D1 (zh)
DK (1) DK1008407T3 (zh)
ES (1) ES2245083T3 (zh)
SI (1) SI1008407T1 (zh)
TW (1) TW453923B (zh)
UA (1) UA49067C2 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013105371A1 (de) * 2013-05-24 2014-11-27 J. C. Binzer Gmbh & Co. Kg Verfahren zum Herstellen mikrofeiner Fasern und Vorrichtung zur Durchführung des Verfahrens

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100488671C (zh) * 2007-02-09 2009-05-20 北京蓝景创新科技有限公司 金属粉末制备装置
DE102007027110A1 (de) * 2007-06-13 2008-12-18 Wacker Chemie Ag Verfahren und Vorrichtung zum Verpacken von polykristallinem Siliciumbruch
DE102011111365A1 (de) 2011-08-29 2013-02-28 Eads Deutschland Gmbh Oberflächenpassivierung von aluminiumhaltigem Pulver
IN2013CH04500A (zh) 2013-10-04 2015-04-10 Kennametal India Ltd
US11213888B2 (en) * 2016-05-03 2022-01-04 Raytheon Technologies Corporation Additive manufactured powder processing system
CN108247074A (zh) * 2018-04-23 2018-07-06 安徽哈特三维科技有限公司 一种用于制备低成本高纯净度球形金属粉体的装置及方法
EP3747574A1 (de) * 2019-06-05 2020-12-09 Hightech Metal ProzessentwicklungsgesellschaftmbH Verfahren und vorrichtung zur herstellung von materialpulver
CN111957955B (zh) * 2020-08-11 2022-05-27 杭州富阳横山复合材料有限公司 一种粉末冶金的压制设备

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US3695795A (en) * 1970-03-20 1972-10-03 Conn Eng Assoc Corp Production of powdered metal
SE421758B (sv) 1970-11-11 1982-02-01 Uddeholms Ab Anordning enligt svenskt patent 6916675-9 for granulering av smelt metall
US4124377A (en) * 1977-07-20 1978-11-07 Rutger Larson Konsult Ab Method and apparatus for producing atomized metal powder
SE425837B (sv) * 1979-05-31 1982-11-15 Asea Ab Anleggning for gasatomisering av en smelta, innefattande kylorgan
US5024695A (en) * 1984-07-26 1991-06-18 Ultrafine Powder Technology, Inc. Fine hollow particles of metals and metal alloys and their production
DE3546040A1 (de) * 1985-12-24 1987-07-02 Eckart Standard Bronzepulver Vorrichtung zur herstellung von metallpulver aus einer metallschmelze
SE461848B (sv) * 1987-12-09 1990-04-02 Hg Tech Ab Foerfarande foer atomisering av vaetskor och anordning foer genomfoerande av foerfarandet
EP0325676B1 (en) * 1988-01-29 1993-01-07 Norsk Hydro A/S Apparatus for producing metal powder
DE3913649A1 (de) * 1989-04-26 1991-01-17 Krupp Pulvermetall Gmbh Verfahren und anlage zum herstellen metallischer pulver aus einer metallschmelze durch gasverduesen
DE4011392B4 (de) * 1990-04-09 2004-04-15 Ald Vacuum Technologies Ag Verfahren und Vorrichtung zur Formung eines Gießstrahls
US5272718A (en) * 1990-04-09 1993-12-21 Leybold Aktiengesellschaft Method and apparatus for forming a stream of molten material
DE4117140A1 (de) * 1991-05-25 1992-11-26 Wolfgang Seidler Verfahren und vorrichtung zur herstellung von pulvern und granulaten in kugelform aus einer schmelze
US5433978A (en) * 1993-09-27 1995-07-18 Iowa State University Research Foundation, Inc. Method of making quasicrystal alloy powder, protective coatings and articles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013105371A1 (de) * 2013-05-24 2014-11-27 J. C. Binzer Gmbh & Co. Kg Verfahren zum Herstellen mikrofeiner Fasern und Vorrichtung zur Durchführung des Verfahrens
DE102013105371B4 (de) * 2013-05-24 2021-02-25 BinNova GmbH & Co. KG Verfahren zum Herstellen mikrofeiner Fasern und Vorrichtung zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
AT407620B (de) 2001-05-25
ATE302082T1 (de) 2005-09-15
BR9907410A (pt) 2001-03-20
ES2245083T3 (es) 2005-12-16
UA49067C2 (uk) 2002-09-16
DK1008407T3 (da) 2005-12-12
TW453923B (en) 2001-09-11
US6405512B1 (en) 2002-06-18
EP1008407A3 (de) 2004-06-09
SI1008407T1 (sl) 2006-02-28
EP1008407A2 (de) 2000-06-14
ATA206698A (de) 2000-09-15
DE59912426D1 (de) 2005-09-22
JP4148308B2 (ja) 2008-09-10
JP2000256709A (ja) 2000-09-19

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