JPS57126946A - Production of sintered tool steel - Google Patents
Production of sintered tool steelInfo
- Publication number
- JPS57126946A JPS57126946A JP1244581A JP1244581A JPS57126946A JP S57126946 A JPS57126946 A JP S57126946A JP 1244581 A JP1244581 A JP 1244581A JP 1244581 A JP1244581 A JP 1244581A JP S57126946 A JPS57126946 A JP S57126946A
- Authority
- JP
- Japan
- Prior art keywords
- sintering
- sintered
- tool steel
- alloy
- sintered tool
- 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
Abstract
PURPOSE: To obtain a sintered tool steel having a high density and excellent abrasion resistance by a method wherein a reducing gas is introduced and pressure is controlled during the sintering of a compact of a high alloy steel powder containing C, Cr, V and W, and both sintering and nitriding are carried out simultaneously by introducing nitrogen gas.
CONSTITUTION: A powddr of a high-alloy high speed steel containing C, Cr, V, W and Mo, Co is compacted. In a part or the entire period of the sintering of the compacted body under a reduced pressure, a reducing gas such as CO is introduced into a sintering furnace and the pressure inside the furnace is controlled at 0.2W500 Torr, under which condition the compacted body is heat treated and sintered. In a part or the entire part of the period from the start of sintering to a cooling process, nitrogen gas is introduced and temperature is raised so as to conduct a nitriding treatment concurrently with the sintering. Accordingly, a sintered alloy having a high density and being nitrided can be obtained by only the sintering process, and a sintered tool steel having a long useful life and suitable for continuous cutting or the like can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1244581A JPS57126946A (en) | 1981-01-29 | 1981-01-29 | Production of sintered tool steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1244581A JPS57126946A (en) | 1981-01-29 | 1981-01-29 | Production of sintered tool steel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57126946A true JPS57126946A (en) | 1982-08-06 |
Family
ID=11805515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1244581A Pending JPS57126946A (en) | 1981-01-29 | 1981-01-29 | Production of sintered tool steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57126946A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60224753A (en) * | 1984-04-19 | 1985-11-09 | Fujitsu Ltd | Manufacture of stainless sintered material |
-
1981
- 1981-01-29 JP JP1244581A patent/JPS57126946A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60224753A (en) * | 1984-04-19 | 1985-11-09 | Fujitsu Ltd | Manufacture of stainless sintered material |
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