GB799973A - Method of producing shaped bodies from aluminium powder - Google Patents
Method of producing shaped bodies from aluminium powderInfo
- Publication number
- GB799973A GB799973A GB25441/56A GB2544156A GB799973A GB 799973 A GB799973 A GB 799973A GB 25441/56 A GB25441/56 A GB 25441/56A GB 2544156 A GB2544156 A GB 2544156A GB 799973 A GB799973 A GB 799973A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- parts
- bearings
- powder
- nodular
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0408—Light metal alloys
- C22C1/0416—Aluminium-based alloys
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
A process for producing shaped bodies such as thin-walled and profiled parts (e.g. ribbons, bearings) from Al powder comprises plastically deforming (e.g. extruding) a mixture of both flaky and nodular Al powders, together with any desired alloying components such as powdered Si, graphite, and intermetallic compounds of Al. The flakes are preferably lenticular with ragged edges, may be be slightly oxidized, and their grease content should be less than 0.4 per cent. Powders both flaky and nodular may be comparatively coarse, e.g. 60 per cent under 40m is useful for bearings. In an example, 39 parts by weight of nodular Al powder with grain size 80 per cent under 40m and with an oxide content of 6 per cent were mixed with 39 parts of lenticular Al powder of which 55 per cent passed a screen of 40m mesh and having an oxide content of 8 per cent. To this mix were added 20 parts of Si powder (60m ) and 2 parts powdered graphite (40m ), and the whole was cold compressed at 2 tons per sq. cm. into shapes of 72 mm. diameter. The shapes were heated for an hour at 440 DEG C., extruded into a channel section suitable for bearings, cut, and forged in forming dies into the finished halves of bearings.ALSO:A process of producing shaped bodies such as thin-walled and profiled parts (e.g., ribbons, bearings) from Al powder comprises plastically deforming (e.g. extruding) a mixture of both flaky and nodular Al powders, together with any desired alloying components such as powdered Si, graphite, and intermetallic compounds of Al. The flakes are preferably lenticular with ragged edges, may be slightly oxidized, and their grease content should be less than 0,4 per cent. Powders both flaky and nodular may be comparatively coarse, e.g., 60 per cent under 40m is useful for bearings. In an example, 39 parts by weight of nodular Al powder with grain size 80 per cent under 40m and with an oxide content of 6 per cent were mixed with 39 parts of lenticular Al powder of which 55 per cent passed a screen of 40m mesh and having an oxide content of 8 per cent. To this mix were added 20 parts of Si powder (60m ) and 2 parts powdered graphite (40m ), and the whole was cold compressed at 2 tons per sq. cm. into shapes of 72 mm. diameter. The shapes were heated for an hour at 440 DEG C., extruded into a channel section suitable for bearings, cut, and forged in forming dies into the finished halves of bearings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE799973X | 1955-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB799973A true GB799973A (en) | 1958-08-13 |
Family
ID=6711725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25441/56A Expired GB799973A (en) | 1955-08-31 | 1956-08-20 | Method of producing shaped bodies from aluminium powder |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB799973A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3166417A (en) * | 1962-05-07 | 1965-01-19 | Int Nickel Co | Platinum-group metal sheet |
US3179516A (en) * | 1962-04-27 | 1965-04-20 | Dow Chemical Co | Direct powder rolling |
US3250838A (en) * | 1964-08-04 | 1966-05-10 | Alloys Res & Mfg Corp | Techniques for compacting aluminum powder mixtures |
US3791800A (en) * | 1971-02-03 | 1974-02-12 | Amsted Ind Inc | Powder metallurgy aluminum parts |
-
1956
- 1956-08-20 GB GB25441/56A patent/GB799973A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3179516A (en) * | 1962-04-27 | 1965-04-20 | Dow Chemical Co | Direct powder rolling |
US3166417A (en) * | 1962-05-07 | 1965-01-19 | Int Nickel Co | Platinum-group metal sheet |
US3250838A (en) * | 1964-08-04 | 1966-05-10 | Alloys Res & Mfg Corp | Techniques for compacting aluminum powder mixtures |
US3791800A (en) * | 1971-02-03 | 1974-02-12 | Amsted Ind Inc | Powder metallurgy aluminum parts |
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