JPS57126947A - Production of sintered high alloy tool steel - Google Patents
Production of sintered high alloy tool steelInfo
- Publication number
- JPS57126947A JPS57126947A JP1244681A JP1244681A JPS57126947A JP S57126947 A JPS57126947 A JP S57126947A JP 1244681 A JP1244681 A JP 1244681A JP 1244681 A JP1244681 A JP 1244681A JP S57126947 A JPS57126947 A JP S57126947A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- tool steel
- sintered
- sintering
- furnace
- 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
Landscapes
- Powder Metallurgy (AREA)
Abstract
PURPOSE: To improve the compactibility and compressibility of a powder material and obtain a sintered high alloy tool steel having a high density by a method wherein a mixture of a low-C tool steel powder with a required amount of a graphite powder is compacted, and a reducing gas is introduced and the pressure inside a furnace is controlled during the sintering of the compact.
CONSTITUTION: To a powder of a tool steel, specifically a low-C high speed steel containing 0.2W0.8wt% of fixed carbon, a graphite powder is mixed in such an amount as to meet the C content requirement after sintering, and the mixture of the powders is compacted. In a part or the entire part of a sintering process of the compact, a reducing gas such as CO is introduced into a furnace, the pressure inside the furnace is controlled at 0.2W500 Torr and the compact is sintered by raising the temperature to about 1,200W1,300°C. In this process, the amount of dissolved C in the alloy powder is reduced to lower the hardness of the powder and improve the compactibility and compressibility of the powder, and the residual oxygen content is lowered by appropriately selecting the reducing-type sintering conditions, thereby obtaining a sintered high alloy tool steel having a high density. The sintered tool steel has a cutting capability comparable or superior to that of a corresponding tool steel produced by melting.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1244681A JPS57126947A (en) | 1981-01-29 | 1981-01-29 | Production of sintered high alloy tool steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1244681A JPS57126947A (en) | 1981-01-29 | 1981-01-29 | Production of sintered high alloy tool steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57126947A true JPS57126947A (en) | 1982-08-06 |
Family
ID=11805546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1244681A Pending JPS57126947A (en) | 1981-01-29 | 1981-01-29 | Production of sintered high alloy tool steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57126947A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61190043A (en) * | 1985-02-20 | 1986-08-23 | Hitachi Metals Ltd | Parts for dies for ic producing equipment |
| US6854366B2 (en) | 2001-05-14 | 2005-02-15 | Citizen Watch Co., Ltd. | Product recovery apparatus and product recovery method |
-
1981
- 1981-01-29 JP JP1244681A patent/JPS57126947A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61190043A (en) * | 1985-02-20 | 1986-08-23 | Hitachi Metals Ltd | Parts for dies for ic producing equipment |
| US6854366B2 (en) | 2001-05-14 | 2005-02-15 | Citizen Watch Co., Ltd. | Product recovery apparatus and product recovery method |
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