EP0062221A2 - Procédé de fabrication d'une poudre de métal ou d'un alliage métallique - Google Patents
Procédé de fabrication d'une poudre de métal ou d'un alliage métallique Download PDFInfo
- Publication number
- EP0062221A2 EP0062221A2 EP82102371A EP82102371A EP0062221A2 EP 0062221 A2 EP0062221 A2 EP 0062221A2 EP 82102371 A EP82102371 A EP 82102371A EP 82102371 A EP82102371 A EP 82102371A EP 0062221 A2 EP0062221 A2 EP 0062221A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- starting material
- foreign substance
- metal
- foreign
- powder
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 title claims abstract description 13
- 229910001092 metal group alloy Inorganic materials 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 16
- 239000000126 substance Substances 0.000 claims abstract description 33
- 239000007858 starting material Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 8
- 229910052787 antimony Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052797 bismuth Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 229910001369 Brass Inorganic materials 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 239000010951 brass Substances 0.000 claims description 5
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical group [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical group [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims 2
- 238000007493 shaping process Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000889 atomisation Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 239000000155 melt Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Images
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
Definitions
- the invention relates to a method for producing a metal or metal alloy powder with flake-shaped powder particles by mechanical comminution of a ductile starting material, the deformation into the leaflets taking place simultaneously with the comminution or in a separate mechanical operation.
- Platelet-shaped metal or metal alloy powders are widely used in coating materials because of their pronounced metallic luster, e.g. in body paints.
- a certain ductility of the starting material for its deformability is important for the formation of the leaflets. The development was and is therefore aimed at improving the deformability of the starting material.
- the ductile properties of the starting material for metal powder production make the comminution of the starting material, which is generally present as semolina, difficult. It was observed, however, that lead content in the metal grit makes the starting material harder and therefore easier to shred. However, this has the disadvantageous consequence that the deformability of the powder particles is severely impaired and the formation of leaflets is only possible to a very limited extent. For this reason, the difficulties in shredding the ductile starting material and thus the use of a cost-increasing outlay for the shredding process have been accepted in favor of easier deformability. A solution to the problem of improving the crushability of the starting material while at the same time maintaining its ductility by means of suitable additives to the starting material was not considered possible.
- the foreign substance in the grains of the starting material contains essentially only as an intermediate substance, i.e. as a separate (intermediate) phase and should not be embedded in the crystallites or their lattice
- the person skilled in the art will understand that in individual cases, i.e. for a certain starting material, the selection of the foreign substance to be determined by means of a few experiments and the upper limit for its proportion in the starting material. If the proportion was above this limit, embrittlement of the powder particles themselves would occur and the deformability of the material would be severely impaired.
- the storage character of the foreign substance as an intermediate substance must also be maintained at the temperatures that occur in the course of the deformation of the starting material to form the leaflets (generally 60 ° C to 100 ° C), i.e. there is no storage of the foreign substances in the crystallites of the source material may take place.
- the proportion of foreign substances in the starting material is also subject to an upper limit in that the color character of the metal particles is to be retained.
- the lower limit for the foreign matter content results from the purpose of the invention, namely to improve the crushability of the starting material.
- foreign substance also means a mixture of different substances the.
- Metals, metal alloys, semimetals and their compounds can be considered as foreign substances. It is also within the scope of the invention if the foreign substances effective according to the invention are formed from the metal or metals and an additive only when the starting material is produced and, for example, constitute an intermetallic compound.
- bismuth and antimony have proven to be suitable foreign substances for the purposes of the invention. Their proportions are generally between 0.1 and 5%, preferably between 1 and 2%.
- the procedure to be followed is that the structure described above is formed, that is to say the foreign substance is precipitated as an intermediate substance at the crystallite boundaries.
- This can be achieved by appropriate management of the cooling process in the atomization of the melt of the starting material containing the foreign substance, taking into account the state diagram applicable to the system in question (starting material / foreign substance), or by subsequent heat treatment (e.g. tempering).
- Copper semolina produced by atomization was continuously comminuted in a company ball mill. The comminution was then carried out using copper semolina, to which 0.5% Bi had been added in the melt prepared for atomization. The hourly output of the ball mill could be increased by approx. 30% with the same working conditions and the same quality of the discharged material.
- the drawing illustrates the structure of a (metal) grain which can be obtained by the process according to the invention using a micrograph traced for the sake of clarity and a diagram relating to a section (AA) placed through the grain, with which the distribution of the foreign substance (sb) embedded in the grain along the cut surface is shown schematically.
- the peaks of the diagram curve, the places with the strongest concentration of the foreign substance, are located between the individual crystallites, because according to the invention, the foreign substance accumulates at the interfaces of the crystallites when the melt solidifies.
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Chemically Coating (AREA)
- Forging (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT82102371T ATE21345T1 (de) | 1981-04-07 | 1982-03-23 | Verfahren zur herstellung eines metall- oder metall-legierungspulvers. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3113886A DE3113886C2 (de) | 1981-04-07 | 1981-04-07 | Verfahren zur Herstellung eines Metall- oder Metallegierungspulvers |
| DE3113886 | 1981-04-07 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84110312.0 Division-Into | 1982-03-23 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0062221A2 true EP0062221A2 (fr) | 1982-10-13 |
| EP0062221A3 EP0062221A3 (en) | 1983-03-30 |
| EP0062221B1 EP0062221B1 (fr) | 1986-08-13 |
Family
ID=6129494
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84110312A Expired EP0152522B1 (fr) | 1981-04-07 | 1982-03-23 | Procédé de fabrication d'une poudre de métal ou d'un alliage métallique |
| EP82102371A Expired EP0062221B1 (fr) | 1981-04-07 | 1982-03-23 | Procédé de fabrication d'une poudre de métal ou d'un alliage métallique |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84110312A Expired EP0152522B1 (fr) | 1981-04-07 | 1982-03-23 | Procédé de fabrication d'une poudre de métal ou d'un alliage métallique |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4404023A (fr) |
| EP (2) | EP0152522B1 (fr) |
| AT (2) | ATE38002T1 (fr) |
| BR (1) | BR8201969A (fr) |
| DE (1) | DE3113886C2 (fr) |
| ES (1) | ES8307147A1 (fr) |
| MX (1) | MX157229A (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2121411C1 (ru) * | 1997-12-05 | 1998-11-10 | Акционерное общество открытого типа "Уралэлектромедь" | Способ получения тонкодисперсного порошка из электрической меди и установка для его осуществления |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4891059A (en) * | 1988-08-29 | 1990-01-02 | Battelle Development Corporation | Phase redistribution processing |
| US5322666A (en) * | 1992-03-24 | 1994-06-21 | Inco Alloys International, Inc. | Mechanical alloying method of titanium-base metals by use of a tin process control agent |
| IL118088A0 (en) * | 1995-06-07 | 1996-08-04 | Anzon Inc | Colloidal particles of solid flame retardant and smoke suppressant compounds and methods for making them |
| US5935890A (en) * | 1996-08-01 | 1999-08-10 | Glcc Technologies, Inc. | Stable dispersions of metal passivation agents and methods for making them |
| AU3208099A (en) * | 1998-05-08 | 1999-11-29 | Ronald R Savin | Modification of metallic particles |
| US9321700B2 (en) | 2011-08-04 | 2016-04-26 | University Of Utah Research Foundation | Production of nanoparticles using homogeneous milling and associated products |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE44242C (de) * | H. LEHMANN in Berlin W., Blumshofstr. 5 | Verfahren zur Herstellung von Bronzepulvern aus Wismuth-Aluminiumbronze direkt aus dem Metallblock unter Vermeidung der Metallfolienschlägerei | ||
| US1790704A (en) * | 1931-02-03 | Obatobieb | ||
| US1632105A (en) * | 1925-03-25 | 1927-06-14 | Western Electric Co | Magnetic material and method of producing it |
| DE536824C (de) * | 1929-01-31 | 1931-10-27 | Int Standard Electric Corp | Verfahren zur Herstellung fein zerteilter, magnetisierbarer Legierungen fuer Massekerne, insbesondere Eisen-Nickel-Kobalt-Legierungen |
| DE865212C (de) * | 1940-04-21 | 1953-02-02 | Deutsche Edelstahlwerke Ag | Verfahren zur Herstellung von Legierungspulvern |
| DE1047967B (de) * | 1955-05-14 | 1958-12-31 | Walter Marx & Co K G | Verfahren zur Herstellung eines hochdispersen Zinkpigments mit Blattstruktur |
| US3787200A (en) * | 1967-09-05 | 1974-01-22 | Copper Range Co | Metal powders for roll compacting |
| US3765866A (en) * | 1968-09-09 | 1973-10-16 | Contemporary Res Inc | Production of copper and copper oxide powder for powder metallurgy |
| BE794142A (fr) * | 1972-01-17 | 1973-07-17 | Int Nickel Ltd | Alliages pour hautes temperatures |
| US3832156A (en) * | 1972-09-27 | 1974-08-27 | Us Bronze Powders Inc | Powdered metal process |
| DE2247299C3 (de) * | 1972-09-27 | 1979-03-01 | Vereinigte Aluminium-Werke Ag, 5300 Bonn | Verfahren zur pulvermetallurgischen Herstellung von Sinterkörpern aus Aluminiumlegierungen |
| DE2946135C2 (de) * | 1979-11-15 | 1982-09-16 | Vereinigte Aluminium-Werke Ag, 5300 Bonn | Verfahren zur Weiterzerkleinerung von Metallpulver |
-
1981
- 1981-04-07 DE DE3113886A patent/DE3113886C2/de not_active Expired
-
1982
- 1982-03-23 AT AT84110312T patent/ATE38002T1/de not_active IP Right Cessation
- 1982-03-23 EP EP84110312A patent/EP0152522B1/fr not_active Expired
- 1982-03-23 AT AT82102371T patent/ATE21345T1/de not_active IP Right Cessation
- 1982-03-23 EP EP82102371A patent/EP0062221B1/fr not_active Expired
- 1982-03-30 US US06/363,572 patent/US4404023A/en not_active Expired - Fee Related
- 1982-04-06 MX MX192183A patent/MX157229A/es unknown
- 1982-04-06 BR BR8201969A patent/BR8201969A/pt not_active IP Right Cessation
- 1982-04-07 ES ES511284A patent/ES8307147A1/es not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2121411C1 (ru) * | 1997-12-05 | 1998-11-10 | Акционерное общество открытого типа "Уралэлектромедь" | Способ получения тонкодисперсного порошка из электрической меди и установка для его осуществления |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3113886C2 (de) | 1983-01-20 |
| ES511284A0 (es) | 1983-06-16 |
| ATE38002T1 (de) | 1988-11-15 |
| DE3113886A1 (de) | 1982-10-21 |
| BR8201969A (pt) | 1983-03-08 |
| EP0152522A3 (en) | 1985-10-09 |
| ES8307147A1 (es) | 1983-06-16 |
| MX157229A (es) | 1988-11-07 |
| EP0152522B1 (fr) | 1988-10-19 |
| US4404023A (en) | 1983-09-13 |
| EP0152522A2 (fr) | 1985-08-28 |
| EP0062221B1 (fr) | 1986-08-13 |
| EP0062221A3 (en) | 1983-03-30 |
| ATE21345T1 (de) | 1986-08-15 |
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