JPS558430A - Production of powder for powder metallurgy - Google Patents
Production of powder for powder metallurgyInfo
- Publication number
- JPS558430A JPS558430A JP8018478A JP8018478A JPS558430A JP S558430 A JPS558430 A JP S558430A JP 8018478 A JP8018478 A JP 8018478A JP 8018478 A JP8018478 A JP 8018478A JP S558430 A JPS558430 A JP S558430A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- fine particles
- metallurgy
- control
- machining
- 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
Abstract
PURPOSE: To make control of carbon content easy and efficiently produce the powder for powder metallurgy of superior toughness by annealing ductile cast iron machining powder to pearlite structure and disintegrating this thereby separating fine particles.
CONSTITUTION: Machining powder of ductile cast iron of C; 2 to 5%, bond C; 0.4% or under is annealed to change its structure from ferrite to pearlite and make the bond C 0.7 to 1.0%. This machining powder is disintegrated with an impact hammer mill or the like and the fine particles are separated by a cyclone to control the contained C content to 1.0 to 2.5%. This method lets the segregation of the fine particles of a lighter specific gravity containing a large amount of C to be prevented and makes the control of C content easy. The use of such powder for metallurgy enables the moldings having superior toughness to be readily produced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8018478A JPS6049683B2 (en) | 1978-06-30 | 1978-06-30 | Manufacturing method of powder for powder metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8018478A JPS6049683B2 (en) | 1978-06-30 | 1978-06-30 | Manufacturing method of powder for powder metallurgy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS558430A true JPS558430A (en) | 1980-01-22 |
| JPS6049683B2 JPS6049683B2 (en) | 1985-11-05 |
Family
ID=13711270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8018478A Expired JPS6049683B2 (en) | 1978-06-30 | 1978-06-30 | Manufacturing method of powder for powder metallurgy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6049683B2 (en) |
-
1978
- 1978-06-30 JP JP8018478A patent/JPS6049683B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6049683B2 (en) | 1985-11-05 |
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