GB574583A - Process for making metallic alloys - Google Patents
Process for making metallic alloysInfo
- Publication number
- GB574583A GB574583A GB39544A GB39544A GB574583A GB 574583 A GB574583 A GB 574583A GB 39544 A GB39544 A GB 39544A GB 39544 A GB39544 A GB 39544A GB 574583 A GB574583 A GB 574583A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder
- iron
- cores
- nickel
- metals
- 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
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
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
574,583. Obtaining coherent masses from powdered metal; alloys. TELEPHONE MANUFACTURING CO., Ltd., and PADDLE, L. H. Jan. 8, 1944; No. 395. [Class 82 (i)] An alloy of two or more metals is made by mixing powder of the metals in the required ratio, pressing into a compact mass, heating until inter-diffusion, without any melting, makes the mass homogeneous, cooling, and then reducing to powder mechanically. An embrittling agent may be mixed with the metal powders, e.g. 0.05 to 0.25 per cent of sulphur with metal powder consisting of 81 per cent of nickel, 17 of iron and 2 of molybdenum, the iron and nickel having been produced, if desired, by the carbonyl process. This may be pressed to form a bar or ring by a pressure of 50 tons per square inch and then heated to 1100-1200‹ C. for 1-4 hours in hydrogen. The mass is then quenched in de-aerated water and crushed in a ball or impact mill. If required for loading and other induction coils, the cores of the powder may then be annealed. For the cores of coils for electrical wave filters 86 per cent of hydrogen-reduced or decarburisedcarbonyl-type iron powder may be mixed with 9.5 of silicon and 4.5 of aluminium and treated as before. For cores of permanent magnets, nickel, aluminium and cobalt in the recognised ratios may be used with 0.1. to 0.25 of iron oxide as embrittling agent. If a very fine powder is desired, the period of heating should not extend beyond that required for complete inter-diffusion. For a complex alloy or one in which the separate metals have widely different melting points, an alloy powder of some of the constituents is first made as above and then another constituent or constituents is or are added and the process repeated., except that the final crushing may be omitted if desired..
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB39544A GB574583A (en) | 1944-01-08 | 1944-01-08 | Process for making metallic alloys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB39544A GB574583A (en) | 1944-01-08 | 1944-01-08 | Process for making metallic alloys |
Publications (1)
Publication Number | Publication Date |
---|---|
GB574583A true GB574583A (en) | 1946-01-11 |
Family
ID=9703633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB39544A Expired GB574583A (en) | 1944-01-08 | 1944-01-08 | Process for making metallic alloys |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB574583A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2672415A (en) * | 1948-07-23 | 1954-03-16 | Fansteel Metallurgical Corp | Production of porous silver bodies |
GB2159835A (en) * | 1984-06-05 | 1985-12-11 | Cabot Corp | Silicon-rich alloy coatings |
-
1944
- 1944-01-08 GB GB39544A patent/GB574583A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2672415A (en) * | 1948-07-23 | 1954-03-16 | Fansteel Metallurgical Corp | Production of porous silver bodies |
GB2159835A (en) * | 1984-06-05 | 1985-12-11 | Cabot Corp | Silicon-rich alloy coatings |
GB2159835B (en) * | 1984-06-05 | 1989-06-01 | Cabot Corp | Silicon-rich alloy coatings |
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