JPS5672101A - Production of iron powder - Google Patents
Production of iron powderInfo
- Publication number
- JPS5672101A JPS5672101A JP14725879A JP14725879A JPS5672101A JP S5672101 A JPS5672101 A JP S5672101A JP 14725879 A JP14725879 A JP 14725879A JP 14725879 A JP14725879 A JP 14725879A JP S5672101 A JPS5672101 A JP S5672101A
- Authority
- JP
- Japan
- Prior art keywords
- swarf
- powder
- grinding
- iron
- iron powder
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 239000001273 butane Substances 0.000 abstract 1
- 238000005255 carburizing Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000005261 decarburization Methods 0.000 abstract 1
- 229910000734 martensite Inorganic materials 0.000 abstract 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 abstract 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 abstract 1
- 238000004663 powder metallurgy Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 238000010583 slow cooling Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
PURPOSE: To make effective use of degreased and dehydrated swarf of iron and steel materials by subjecting said swarf to carburizing or hardening to embrittle the same then grinding the same and decarburizing the ground swarf and further imparting toughness and grinding the same and recycling the resulted powder to iron powder for powder metallurgy or iron powder for welding rod coating.
CONSTITUTION: Swarf of iron and steel materials is cleaned with a suitable cleaning soln. and is dried. Next, the pretreated swarf is carburized in a furnace, by using, for example, a butane gas, at 700W1,000°C, so as to have 0.6W2.0wt% carbon amounts. Next, the carburized swarf is hardened in a nonoxidative atmosphere to make martensite and embrittle the structure. The embrittled swarf is subjected to the primary grinding by mechanical means, after which it is decarburized and annealed through slow cooling by using endothermic type butane-modified gas, H2, etc. and under controlled decarburization temp. and in-furnace dew point. The resulted primary ground powder of ≤0.2wt% carbon amount is further subjected to the secondary grinding, whereby the intended iron powder is produced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14725879A JPS5672101A (en) | 1979-11-13 | 1979-11-13 | Production of iron powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14725879A JPS5672101A (en) | 1979-11-13 | 1979-11-13 | Production of iron powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5672101A true JPS5672101A (en) | 1981-06-16 |
Family
ID=15426156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14725879A Pending JPS5672101A (en) | 1979-11-13 | 1979-11-13 | Production of iron powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5672101A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0680393A4 (en) * | 1991-02-01 | 1994-02-11 | Sydney M Kaufman | Method of recycling scrap metal. |
-
1979
- 1979-11-13 JP JP14725879A patent/JPS5672101A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0680393A4 (en) * | 1991-02-01 | 1994-02-11 | Sydney M Kaufman | Method of recycling scrap metal. |
| EP0680393A1 (en) * | 1991-02-01 | 1995-11-08 | KAUFMAN, Sydney M. | Method of recycling scrap metal |
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