GB897343A - Improvements in or relating to the manufacture of sintered metal articles - Google Patents
Improvements in or relating to the manufacture of sintered metal articlesInfo
- Publication number
- GB897343A GB897343A GB2763459A GB2763459A GB897343A GB 897343 A GB897343 A GB 897343A GB 2763459 A GB2763459 A GB 2763459A GB 2763459 A GB2763459 A GB 2763459A GB 897343 A GB897343 A GB 897343A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- compact
- formers
- cadmium
- coating
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials For Medical Uses (AREA)
Abstract
A sintered metal article containing ducts, holes or voids is produced by compacting metal powder around shaped formers which consist of a core of non ductile high melting point material such as stainless steel and a coating of a volatilisable metal such as cadmium, zinc or indium, preheating the compact at a temperature high enough to volatilise the coating metal, removing the metal cores and finally sintering the compact. The thickness of the metal coating should be less than 20% of the diameter of the core and the formers should be so positioned in the compact that at least one end of each former is exposed at a face of the compact during the preheating. In a specific example a mixture of metal powders to form an alloy of 20% Cr, 16% Co, 2,35% Ti, 1,35% Al, 0,07%-0,1% C, 0,05% B and the balance Ni, is pressed around formers of stainless steel 0,061 inch diameter coated with a layer of cadmium 0,005 inch thick at 35 tons per square inch in a floating die assembly. The cadmium is removed by heating at 650 DEG C. in vacuum and after cooling the steel formers are removed. The compact is finally sintered in hydrogen or vacuum at 1300 DEG C. to 1325 DEG C. for 20 hours. Specification 611,466 is referred to.ALSO:A sintered metal article containing ducts, holes or voids is produced by compacting metal powder around shaped formers which consist of a core of non-ductile high melting point material such as stainless steel and a coating of a volatilisable metal such as cadmium, zinc or indium, preheating the compact at a temperature high enough to volatilise the coating metal, removing the metal cores and finally sintering the compact. The thickness of the metal coating should be less than 20% of the diameter of the core and the formers should be so positioned in the compact that at least one end of each former is exposed at a face of the compact during the preheating. In a specific example a mixture of metal powders is pressed around formers of stainless steel 0,061 inch diameter coated with a layer of cadmium 0,005 inch thick at 35 tons per square inch in a floating die assembly. The cadmium is removed by heating at 650 DEG C in vacuum and after cooling the steel formers are removed. Specification 611,466 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2763459A GB897343A (en) | 1959-08-12 | 1959-08-12 | Improvements in or relating to the manufacture of sintered metal articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2763459A GB897343A (en) | 1959-08-12 | 1959-08-12 | Improvements in or relating to the manufacture of sintered metal articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB897343A true GB897343A (en) | 1962-05-23 |
Family
ID=10262797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2763459A Expired GB897343A (en) | 1959-08-12 | 1959-08-12 | Improvements in or relating to the manufacture of sintered metal articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB897343A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981002862A1 (en) * | 1980-04-01 | 1981-10-15 | Jaeger Eberhard Gmbh | Nozzle with a plurality of channels,particularly burner nozzle for a welding apparatus and the like and manufacturing method thereof |
| EP3210693A1 (en) * | 2016-02-29 | 2017-08-30 | General Electric Company | Casting with a second metal component formed around a first metal component using hot isostatic pressing |
-
1959
- 1959-08-12 GB GB2763459A patent/GB897343A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981002862A1 (en) * | 1980-04-01 | 1981-10-15 | Jaeger Eberhard Gmbh | Nozzle with a plurality of channels,particularly burner nozzle for a welding apparatus and the like and manufacturing method thereof |
| EP3210693A1 (en) * | 2016-02-29 | 2017-08-30 | General Electric Company | Casting with a second metal component formed around a first metal component using hot isostatic pressing |
| CN107127346A (en) * | 2016-02-29 | 2017-09-05 | 通用电气公司 | The casting of the second hardware is formed around the first hardware using high temperature insostatic pressing (HIP) |
| US10343218B2 (en) | 2016-02-29 | 2019-07-09 | General Electric Company | Casting with a second metal component formed around a first metal component using hot isostactic pressing |
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