JPS55100902A - Preparation of high melting point sintered metal article - Google Patents
Preparation of high melting point sintered metal articleInfo
- Publication number
- JPS55100902A JPS55100902A JP639379A JP639379A JPS55100902A JP S55100902 A JPS55100902 A JP S55100902A JP 639379 A JP639379 A JP 639379A JP 639379 A JP639379 A JP 639379A JP S55100902 A JPS55100902 A JP S55100902A
- Authority
- JP
- Japan
- Prior art keywords
- cut
- punch
- lower punch
- press
- away
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 title abstract 3
- 229910052751 metal Inorganic materials 0.000 title abstract 3
- 238000002844 melting Methods 0.000 title abstract 2
- 230000008018 melting Effects 0.000 title abstract 2
- 239000000843 powder Substances 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 2
- 238000005245 sintering Methods 0.000 abstract 2
- 239000002019 doping agent Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
PURPOSE: To equalize the density of press-formed body totally by a method wherein, in the case of press-forming a high melting point metal powder to a rod like shape having cut-away surfaces at both end portions thereof, the said powder material is press-formed positioning the cut-away surfaces parallel to the pressurizing direction.
CONSTITUTION: A minute amount of Al, K, Si or the like is added to and mixed with high m.p. metal powder such as W, Mo or the like as a doping agent. This mixture is pressurized and formed by an upper punch 8, a lower punch 9, a mold main body 7 to prepare a rod like formed body 1 having cut-away surfaces 2 at both end portions. In this case, a lower punch 9 is formed so as to position a cut-away surface 7b parallel to a pressurizing direction of an upper punch 8. The above described mixture 10 is received between an upper and a lower punch 8, 9 and pressurised by an upper punch 8 to mold a rod shape 1 having cut-away surfaces 2. Because a distance between an upper and a lower punch is equal at any portions, total pressurizing density is equalized and, in case of applying an electric current and sintering while both ends are grasped by a holder, an uniform sintering condition is totally attained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP639379A JPS55100902A (en) | 1979-01-23 | 1979-01-23 | Preparation of high melting point sintered metal article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP639379A JPS55100902A (en) | 1979-01-23 | 1979-01-23 | Preparation of high melting point sintered metal article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55100902A true JPS55100902A (en) | 1980-08-01 |
| JPS633001B2 JPS633001B2 (en) | 1988-01-21 |
Family
ID=11637115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP639379A Granted JPS55100902A (en) | 1979-01-23 | 1979-01-23 | Preparation of high melting point sintered metal article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55100902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010060839A (en) * | 2008-09-03 | 2010-03-18 | Ricoh Co Ltd | Method for manufacturing image carrier protective agent, the image carrier protective agent, protective layer forming apparatus, image forming method, and image forming apparatus |
-
1979
- 1979-01-23 JP JP639379A patent/JPS55100902A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010060839A (en) * | 2008-09-03 | 2010-03-18 | Ricoh Co Ltd | Method for manufacturing image carrier protective agent, the image carrier protective agent, protective layer forming apparatus, image forming method, and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS633001B2 (en) | 1988-01-21 |
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