JPS57200501A - Iron powder having high compressibility for high strength powder metallurgy product and preparation thereof - Google Patents
Iron powder having high compressibility for high strength powder metallurgy product and preparation thereofInfo
- Publication number
- JPS57200501A JPS57200501A JP56084456A JP8445681A JPS57200501A JP S57200501 A JPS57200501 A JP S57200501A JP 56084456 A JP56084456 A JP 56084456A JP 8445681 A JP8445681 A JP 8445681A JP S57200501 A JPS57200501 A JP S57200501A
- Authority
- JP
- Japan
- Prior art keywords
- reduced
- powder
- iron powder
- compressibility
- mesh
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract 9
- 238000004663 powder metallurgy Methods 0.000 title abstract 2
- 239000000843 powder Substances 0.000 abstract 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0235—Starting from compounds, e.g. oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
PURPOSE:To prepare an iron powder for a powder metallurgy product excellent in sinterability and sinter tensile strength without losing compressibility by a method wherein a relatively small amount of a reduced iron powder is mixed in an unfinished reduced water atomized iron powder and the resulting mixture is reduced and crushed. CONSTITUTION:A mixture consisting of 70-95% unfinished reduced water atomized iron powder whose particle size ratio of 100 mesh or less is 90wt% or more and the remainder reduced iron powder whose particle size ratio of 325 mesh or less is 70% or more is subjected to finish reduction in a temp. range of 850-1,050 deg.C under a reducing atmosphere with a dew point 0-15 deg.C and the obtained finished reduced cake is crushed to obtain a desired iron product whose powder ratio of 100 mesh or less is 80% or more. In the above described method, a compounding ratio of the reduced iron fine powder is reduced to prevent the lowering of compressibility and the deterioration of moldability. In addition, the atmosphere of finish reduction is pref. a H2 gas or an ammonia decomposed gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56084456A JPS57200501A (en) | 1981-06-03 | 1981-06-03 | Iron powder having high compressibility for high strength powder metallurgy product and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56084456A JPS57200501A (en) | 1981-06-03 | 1981-06-03 | Iron powder having high compressibility for high strength powder metallurgy product and preparation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57200501A true JPS57200501A (en) | 1982-12-08 |
| JPS6156283B2 JPS6156283B2 (en) | 1986-12-02 |
Family
ID=13831119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56084456A Granted JPS57200501A (en) | 1981-06-03 | 1981-06-03 | Iron powder having high compressibility for high strength powder metallurgy product and preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57200501A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008150648A (en) * | 2006-12-15 | 2008-07-03 | Jfe Steel Kk | Iron powder for powder metallurgy |
| WO2015004880A1 (en) * | 2013-07-09 | 2015-01-15 | Ｊｆｅスチール株式会社 | Iron powder for bearing and method for producing iron powder for bearing |
-
1981
- 1981-06-03 JP JP56084456A patent/JPS57200501A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008150648A (en) * | 2006-12-15 | 2008-07-03 | Jfe Steel Kk | Iron powder for powder metallurgy |
| WO2015004880A1 (en) * | 2013-07-09 | 2015-01-15 | Ｊｆｅスチール株式会社 | Iron powder for bearing and method for producing iron powder for bearing |
| JPWO2015004880A1 (en) * | 2013-07-09 | 2017-03-02 | Ｊｆｅスチール株式会社 | Iron powder for bearings and method for producing iron powder for bearings |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6156283B2 (en) | 1986-12-02 |
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