EP2440349A1 - Method for processing metal powder - Google Patents
Method for processing metal powderInfo
- Publication number
- EP2440349A1 EP2440349A1 EP10722682A EP10722682A EP2440349A1 EP 2440349 A1 EP2440349 A1 EP 2440349A1 EP 10722682 A EP10722682 A EP 10722682A EP 10722682 A EP10722682 A EP 10722682A EP 2440349 A1 EP2440349 A1 EP 2440349A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal powder
- pellets
- deformed
- powder particles
- baffle plate
- 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.)
- Granted
Links
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
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- 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
- B22F9/10—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 using centrifugal force
Definitions
- the invention relates to a method for processing metal powder, which consists of a plurality of Metallpulverkü- gel.
- the object of the invention is to provide a method for processing metal powder, which consists of a plurality of metal powder globules, can be provided by means of which metal powder with non-spherical metal powder particles can be produced.
- FIG. 1 is a flowchart for explaining a method for processing metal powder according to a first embodiment of the invention
- Figure 2 is a flowchart for explaining a method for processing metal powder according to a second embodiment of the invention.
- the inventive method is provided as a starting material metal powder, which consists of a plurality of metal powder beads whose diameter is in the range of 100 microns to 500 microns.
- metal powder can be produced, for example, by means of the above-mentioned method.
- a first step S1 the metal powder pellets are heated to a temperature at which the metal powder pellets are in the doughy state.
- This heating of the metal powder pellets can be carried out using an induction process, by application of radiant heat or in a hot inert gas stream.
- a collision of the metal powder pellets in the doughy state is brought about with a baffle body in order to obtain deformed metal powder particles.
- This baffle may be a baffle that is at right angles or at some other angle to the metal powder bead stream.
- This baffle plate may be formed propeller-shaped. Furthermore, can they are designed to be movable, for example, rotate or swiveled constantly.
- the metal powder particles deformed by collision with the baffle plate become as follows
- Step S3 collected in a collection vessel An advantageous embodiment is to transport the deformed metal powder particles by means of a conveyor belt in the collecting vessel, wherein the conveyor belt is disposed either between the baffle plate and the collecting vessel or wherein the conveyor belt itself serves as a baffle plate.
- An alternative embodiment consists of colliding the metal powder pellets in the doughy state against one another in order to obtain deformed metal powder particles with a non-spherical surface.
- step S4 After collecting the deformed metal powder particles in the collecting vessel, cooling of the deformed metal powder particles takes place in a step S4 until they are again in a solid state.
- the metal powder particles provided by step S2 in the collecting vessel in which they are collected in accordance with step S3 may be subjected to another processing.
- the resulting metal powder particles have, in contrast to the starting material projections, edges and corners.
- metal powder which consists of a large number of such deformed metal powder particles
- a drilling tool made, for example, of steel with internal, helically extending cooling channels
- the steel powder is kneaded with a binder which binds with the binder kneaded steel powder is passed through a pressing tool to produce a strand with internal, rectilinear cooling channels
- the Pressing strand leaving each strand is cut to a desired length
- the resulting blank is supported under support over its entire length of a rolling motion whose velocity varies linearly and steadily over the length of the body, so that the blank is twisted, and wherein the twisted
- the blank is sintered and then provided on its outer shell with spiral flutes.
- Starting material used the same metal powder as in the method explained with reference to FIG 1, is carried out in a first step Sl, a heating of the metal powder spheres to a temperature at which the metal powder pellets are in the doughy state.
- a subsequent step Sl / 2 the metal powder pellets in the doughy state are subjected to an acceleration.
- This acceleration can be carried out by a magnetic field, by means of a spinning process or by means of a protective gas flow.
- the accelerated metal powder pellets which are in the doughy state, are subjected to a collision with an impact body in a subsequent step S2 in order to be deformed in the same way as in the method explained with reference to FIG.
- the metal powder particles deformed by the collision are collected in a collecting vessel according to a subsequent step S3, where they cool according to a step S4, so that the metal powder particles are finally in a solid state.
- the metal powder consisting of a plurality of metal powder pellets is processed to provide metal powder composed of a plurality of metal powder particles which are not spherical are but have projections, corners and edges.
- metal powder pellets located in the doughy state are accelerated before their collision process, it can happen that metal powder pellets burst during the collision, so that a plurality of even smaller, deformed metal powder particles are formed from a metal powder pellet. This leads to a further improvement of the above-described and desired entanglement of the metal powder particles in the blank and thus to an even further dimensional stability of the blank.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009024120A DE102009024120A1 (en) | 2009-06-06 | 2009-06-06 | Process for processing metal powder |
PCT/EP2010/057383 WO2010139614A1 (en) | 2009-06-06 | 2010-05-28 | Method for processing metal powder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2440349A1 true EP2440349A1 (en) | 2012-04-18 |
EP2440349B1 EP2440349B1 (en) | 2019-07-03 |
Family
ID=42670556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10722682.1A Active EP2440349B1 (en) | 2009-06-06 | 2010-05-28 | Method for processing steel powder |
Country Status (6)
Country | Link |
---|---|
US (1) | US9132481B2 (en) |
EP (1) | EP2440349B1 (en) |
JP (1) | JP5787883B2 (en) |
DE (1) | DE102009024120A1 (en) |
ES (1) | ES2742260T3 (en) |
WO (1) | WO2010139614A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009024119A1 (en) * | 2009-06-06 | 2010-12-09 | Arno Friedrichs | Process for processing metal powder |
US9555473B2 (en) * | 2011-10-08 | 2017-01-31 | The Boeing Company | System and method for increasing the bulk density of metal powder |
JP6036597B2 (en) * | 2013-08-02 | 2016-11-30 | トヨタ自動車株式会社 | Magnet powder manufacturing apparatus and manufacturing method |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2181123A (en) * | 1937-02-11 | 1939-11-28 | Glidden Co | Treatment of metallic powders |
JPS61166905A (en) | 1985-01-16 | 1986-07-28 | Sumitomo Special Metals Co Ltd | Production of raw material powder for permanent magnet |
JPH01321096A (en) | 1988-06-24 | 1989-12-27 | Senju Metal Ind Co Ltd | Method of deforming spheroidal powder solder |
DE69000179T2 (en) | 1989-04-10 | 1993-01-07 | Gte Prod Corp | METHOD FOR PRODUCING FINE PARTICLE POWDERS BY SPRAYING WITH A HOT DISC. |
US5039476A (en) * | 1989-07-28 | 1991-08-13 | Ube Industries, Ltd. | Method for production of powder metallurgy alloy |
JP2751080B2 (en) | 1989-07-28 | 1998-05-18 | 宇部興産株式会社 | Manufacturing method of metal powder molding material |
BR0009107A (en) * | 1999-03-19 | 2002-12-31 | Cabot Corp | Method for producing niobium powder and other metallic powders by grinding |
JP2004043883A (en) | 2002-07-11 | 2004-02-12 | Murata Mfg Co Ltd | Heat treatment method for metal powder |
TWI381897B (en) | 2004-12-22 | 2013-01-11 | Taiyo Nippon Sanso Corp | Process for producing metallic ultra fine powder |
JP2006351688A (en) | 2005-06-14 | 2006-12-28 | Sumitomo Metal Mining Co Ltd | Producing method of samarium-iron-nitrogen-based magnet fine powder |
JP2007324270A (en) * | 2006-05-31 | 2007-12-13 | Toyota Motor Corp | Method of manufacturing magnetic powder, and dust core |
US7691177B2 (en) * | 2006-10-30 | 2010-04-06 | Niotan, Inc. | Method and an apparatus of plasma processing of tantalum particles |
DE102009024119A1 (en) | 2009-06-06 | 2010-12-09 | Arno Friedrichs | Process for processing metal powder |
-
2009
- 2009-06-06 DE DE102009024120A patent/DE102009024120A1/en not_active Ceased
-
2010
- 2010-05-28 EP EP10722682.1A patent/EP2440349B1/en active Active
- 2010-05-28 ES ES10722682T patent/ES2742260T3/en active Active
- 2010-05-28 US US13/265,652 patent/US9132481B2/en active Active
- 2010-05-28 WO PCT/EP2010/057383 patent/WO2010139614A1/en active Application Filing
- 2010-05-28 JP JP2012513553A patent/JP5787883B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2010139614A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2440349B1 (en) | 2019-07-03 |
US9132481B2 (en) | 2015-09-15 |
JP2012529560A (en) | 2012-11-22 |
WO2010139614A1 (en) | 2010-12-09 |
JP5787883B2 (en) | 2015-09-30 |
DE102009024120A1 (en) | 2010-12-09 |
US20120060576A1 (en) | 2012-03-15 |
ES2742260T3 (en) | 2020-02-13 |
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