GB719047A - Manufacture of metal powders - Google Patents
Manufacture of metal powdersInfo
- Publication number
- GB719047A GB719047A GB235153A GB235153A GB719047A GB 719047 A GB719047 A GB 719047A GB 235153 A GB235153 A GB 235153A GB 235153 A GB235153 A GB 235153A GB 719047 A GB719047 A GB 719047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- alloys
- gas
- pressure
- alloy containing
- 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
- B22F9/06—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
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
719,047. Granulating metals; alloys. BERK & CO., Ltd., F. W. Jan. 27, 1953, No. 2351/53. Classes 82 (1) and 82 (2)] A process for the manufacture of metal powders substantially free from oxygen comprises subjecting a downwardly flowing stream of molten metal to the action of an annular and conical jet of aqueous liquid, the velocity of which is at least 60 ft. per sec., in an atmosphere of an inert or reducing gas which is under a sufficient pressure to balance the tendency of the jet to suck air into the system. The metal may be ferrous including alloys of Fe with Cr, Si, A1 and Ti, Cu and Cu-base alloys such as Cu-Pb, Pb, Sn, Al and Al-Mg alloys, Zn, brasses, bronzes, Cr, Ni and alloys thereof. The liquid may be water which may have dissolved in it up to 1 per cent. by weight of oxidation inhibitors such as sodium benzoate, sodium bichromate, sodium arsenite or ammonium chloride. The gas may be N 1 H 1 cracked NH, or argon. The pressure may be less than 60 inches of water above atmospheric pressure. In the form shown, molten metal 2 in a tundish 3 with a central hole 4 is heated by an electric heater 5, and water is jetted by nozzles 7 into a gas-tight chamber 10 having an inlet 11 for non-oxidizing gas, a water inlet 12, pressure gauges 13 and 18, an oxygen indicator 14, an overflow pipe 15, an outlet pipe 16 and a balancing pipe 17. A small excess pressure of not more than one inch of water may be obtained by filling the chamber 10 with water, allowing some of it to flow out and be replaced by a non-oxidizing gas, and then admitting more water to compress slightly the non- oxidizing gas. The Specification describes the treatment of four alloys with the following percentage compositions:-(i) stainless steel containing 17-12 Cr, 9.32 Ni, .21 Si and 68.1 Fe; (ii) a Cr-Ni alloy containing 74.23 Ni, 21.18 Cr, 2.44 Ti, .63 Al and .45 Fe; (iii) a Ni-Cu alloy containing 67.0 Ni, 30.0 Cu, 1.4 Fe and 1.0 Mn; and (iv) a Cu Pb alloy containing 70.05 Cu, 29.31 Pb, .09 Sn and .09 P. Specification 553,672 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB235153A GB719047A (en) | 1953-01-27 | 1953-01-27 | Manufacture of metal powders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB235153A GB719047A (en) | 1953-01-27 | 1953-01-27 | Manufacture of metal powders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB719047A true GB719047A (en) | 1954-11-24 |
Family
ID=9738033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB235153A Expired GB719047A (en) | 1953-01-27 | 1953-01-27 | Manufacture of metal powders |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB719047A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2870485A (en) * | 1955-10-28 | 1959-01-27 | Berk F W & Co Ltd | Manufacture of powders of copper and copper alloys |
| US2892215A (en) * | 1954-03-26 | 1959-06-30 | Mannesmann Ag | Process for the production of metal powder |
| DE1100429B (en) * | 1956-02-03 | 1961-02-23 | F W Berk & Company Ltd | Process for the production of metal powder by atomizing a liquid metal jet |
| DE2058964A1 (en) * | 1969-12-15 | 1971-06-24 | Stora Kopparbergs Bergslags Ab | Method and device for the continuous cooling of powder produced by granulating a molten material |
-
1953
- 1953-01-27 GB GB235153A patent/GB719047A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2892215A (en) * | 1954-03-26 | 1959-06-30 | Mannesmann Ag | Process for the production of metal powder |
| US2870485A (en) * | 1955-10-28 | 1959-01-27 | Berk F W & Co Ltd | Manufacture of powders of copper and copper alloys |
| DE1100429B (en) * | 1956-02-03 | 1961-02-23 | F W Berk & Company Ltd | Process for the production of metal powder by atomizing a liquid metal jet |
| DE2058964A1 (en) * | 1969-12-15 | 1971-06-24 | Stora Kopparbergs Bergslags Ab | Method and device for the continuous cooling of powder produced by granulating a molten material |
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