JPS5716155A - Free cutting sintered iron - Google Patents
Free cutting sintered ironInfo
- Publication number
- JPS5716155A JPS5716155A JP9098680A JP9098680A JPS5716155A JP S5716155 A JPS5716155 A JP S5716155A JP 9098680 A JP9098680 A JP 9098680A JP 9098680 A JP9098680 A JP 9098680A JP S5716155 A JPS5716155 A JP S5716155A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- lead
- copper
- grains
- 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.)
- Granted
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
PURPOSE: To improve the machinability of sintered iron using no special means when sintering, by diffusing copper phase and lead phase into the crystal boundary of iron grains in the base material and by inhibiting the alloying of carbon from an atmosphere with the iron base metal.
CONSTITUTION: 0.2W3wt% lead and 0.5W5wt% copper in the form of free powder particles or alloy powder particles are mixed with iron powder to be molded and then the molded item is sintered in a non oxidizing atmosphere. Further, to the mixture, MnS powder and CaS powder may be added. It is best to carry out the sintering at a temperature which is sufficient to result in no chipping when the molded item is machined thereafter and at which the carbon component is hardly alloyed with the iron base metal. Lead and copper improve the machinability of the sintered body. Lead is alloyed with a part or the entire of copper to diffuse rapidly into gaps between iron grains and into the boundary of iron grains and to cover iron grains with the newly formed alloy, thereby inhibiting the alloying of caron with the iron grains. For attaining such effects, each content of lead and copper need exceed the above-mentioned each lower limit, respectively, but, on the other hand, when the content exceeds the upper limit corresponding to it, lead obstructs bonding between iron grains and is apt to result in the formation of defects in machining of the sintered body, while copper is excessively alloyed with iron so that the hardness of iron base metal is raised and the machinability of the sintered body is deteriorated.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9098680A JPS5716155A (en) | 1980-07-02 | 1980-07-02 | Free cutting sintered iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9098680A JPS5716155A (en) | 1980-07-02 | 1980-07-02 | Free cutting sintered iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5716155A true JPS5716155A (en) | 1982-01-27 |
| JPS6230261B2 JPS6230261B2 (en) | 1987-07-01 |
Family
ID=14013826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9098680A Granted JPS5716155A (en) | 1980-07-02 | 1980-07-02 | Free cutting sintered iron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5716155A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59147082A (en) * | 1983-02-10 | 1984-08-23 | Sumitomo Metal Ind Ltd | Coal liquefaction |
| US5346529A (en) * | 1992-03-23 | 1994-09-13 | Tecsyn Pmp, Inc. | Powdered metal mixture composition |
| WO2016190038A1 (en) * | 2015-05-27 | 2016-12-01 | 株式会社神戸製鋼所 | Mixed powder for iron-based powder metallurgy, method for producing same, sintered body produced using same, and method for producing sintered body |
| CN107326253A (en) * | 2017-05-27 | 2017-11-07 | 江苏金基特钢有限公司 | One kind is easy to the iron Preparation Method of Cutting Steel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216684A (en) * | 1975-07-29 | 1977-02-08 | Showa Electric Wire & Cable Co Ltd | Heat and radiation ray-resistant cables |
| JPS578869A (en) * | 1980-06-18 | 1982-01-18 | Fujitsu Ltd | Panel function control system |
-
1980
- 1980-07-02 JP JP9098680A patent/JPS5716155A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216684A (en) * | 1975-07-29 | 1977-02-08 | Showa Electric Wire & Cable Co Ltd | Heat and radiation ray-resistant cables |
| JPS578869A (en) * | 1980-06-18 | 1982-01-18 | Fujitsu Ltd | Panel function control system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59147082A (en) * | 1983-02-10 | 1984-08-23 | Sumitomo Metal Ind Ltd | Coal liquefaction |
| US5346529A (en) * | 1992-03-23 | 1994-09-13 | Tecsyn Pmp, Inc. | Powdered metal mixture composition |
| WO2016190038A1 (en) * | 2015-05-27 | 2016-12-01 | 株式会社神戸製鋼所 | Mixed powder for iron-based powder metallurgy, method for producing same, sintered body produced using same, and method for producing sintered body |
| JP2016222943A (en) * | 2015-05-27 | 2016-12-28 | 株式会社神戸製鋼所 | Mixed powder for iron-based powder metallurgy, method for producing the same, sintered body produced using the same, and method for producing the same |
| CN107614158A (en) * | 2015-05-27 | 2018-01-19 | 株式会社神户制钢所 | The sintered body of its making of ferrous based powder metallurgical mixed powder and its manufacture method and use and the manufacture method of sintered body |
| CN107326253A (en) * | 2017-05-27 | 2017-11-07 | 江苏金基特钢有限公司 | One kind is easy to the iron Preparation Method of Cutting Steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6230261B2 (en) | 1987-07-01 |
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