EP0546106A1 - Mechanical alloying process - Google Patents
Mechanical alloying processInfo
- Publication number
- EP0546106A1 EP0546106A1 EP19910918004 EP91918004A EP0546106A1 EP 0546106 A1 EP0546106 A1 EP 0546106A1 EP 19910918004 EP19910918004 EP 19910918004 EP 91918004 A EP91918004 A EP 91918004A EP 0546106 A1 EP0546106 A1 EP 0546106A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- comminuting
- welding
- product
- carried out
- transition
- 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.)
- Withdrawn
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
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
Definitions
- the tangential velocities of the opposing rolls at a roll bite may be essentially equal, or one roll may be made to roll at a faster velocity than the other, in order to superimpose a shearing action on the material in the roll bite.
- the work roll surface may be roughened to increase the coefficient of friction. This increases the thickness of the powder mass and, it is believed, would eliminate a need in some cases to employ two rolling stages per "pass", the first using a large diameter roll to partially consolidate the powder mass and the second using a small diameter roll to get maximum plastic strain. Since surface finish is not normally of concern here, the roughness could be microns in "amplitude.” Care should be taken to avoid dislodging portions of the roughened roll surface, thus creating a source of contamination. The possibility exists of using laser or electron beam pitting as a controlled means. Alternatively, abrasive grit blasting could be employed.
Abstract
L'invention permet d'obtenir un alliage mécanique par laminage (13) de matière (A, B). Elle est caractérisée par une certitude d'évènements d'usinage et de soudage, comparée à l'apparition statistique ou aléatoire de ces évènements dans le broyage à boules utilisé antérieurement. Les étages de broyage (18) peuvent être combinés avec le laminage et ils peuvent être commandés séparément. Des particules de préférence non broyées sont acheminées pour être laminées.The invention makes it possible to obtain a mechanical alloy by rolling (13) of material (A, B). It is characterized by a certainty of machining and welding events, compared to the statistical or random occurrence of these events in the ball milling used previously. The grinding stages (18) can be combined with rolling and can be ordered separately. Particularly unmilled particles are conveyed to be laminated.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57490590A | 1990-08-30 | 1990-08-30 | |
US574905 | 1990-08-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0546106A1 true EP0546106A1 (en) | 1993-06-16 |
EP0546106A4 EP0546106A4 (en) | 1993-12-29 |
Family
ID=24298131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910918004 Withdrawn EP0546106A4 (en) | 1990-08-30 | 1991-08-28 | Mechanical alloying process |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0546106A4 (en) |
JP (1) | JPH06502891A (en) |
WO (1) | WO1992004150A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0768563B2 (en) * | 1991-05-27 | 1995-07-26 | 大同特殊鋼株式会社 | Method for producing hard particle dispersed alloy powder |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3041716A (en) * | 1956-01-18 | 1962-07-03 | Commissariat Energie Atomique | Method of treating metallic powders |
US3099080A (en) * | 1957-07-01 | 1963-07-30 | Int Nickel Co | Method of converting metal powder into flake |
DE2625233A1 (en) * | 1975-12-03 | 1977-06-08 | Ford Werke Ag | METAL POWDER PRODUCTION METHOD |
WO1989010194A1 (en) * | 1988-04-29 | 1989-11-02 | Scientific Generics Limited | Processing method and apparatus |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4391634A (en) * | 1982-03-01 | 1983-07-05 | Huntington Alloys, Inc. | Weldable oxide dispersion strengthened alloys |
-
1991
- 1991-08-28 JP JP3516664A patent/JPH06502891A/en active Pending
- 1991-08-28 WO PCT/US1991/006154 patent/WO1992004150A1/en not_active Application Discontinuation
- 1991-08-28 EP EP19910918004 patent/EP0546106A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3041716A (en) * | 1956-01-18 | 1962-07-03 | Commissariat Energie Atomique | Method of treating metallic powders |
US3099080A (en) * | 1957-07-01 | 1963-07-30 | Int Nickel Co | Method of converting metal powder into flake |
DE2625233A1 (en) * | 1975-12-03 | 1977-06-08 | Ford Werke Ag | METAL POWDER PRODUCTION METHOD |
WO1989010194A1 (en) * | 1988-04-29 | 1989-11-02 | Scientific Generics Limited | Processing method and apparatus |
Non-Patent Citations (1)
Title |
---|
See also references of WO9204150A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH06502891A (en) | 1994-03-31 |
EP0546106A4 (en) | 1993-12-29 |
WO1992004150A1 (en) | 1992-03-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19930325 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE DE ES FR GB IT SE |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BENJAMIN, JOHN S. |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19931111 |
|
AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): AT BE DE ES FR GB IT SE |
|
17Q | First examination report despatched |
Effective date: 19950721 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19970114 |