JPS56123303A - Hot working method for powder of high speed steel - Google Patents
Hot working method for powder of high speed steelInfo
- Publication number
- JPS56123303A JPS56123303A JP2688680A JP2688680A JPS56123303A JP S56123303 A JPS56123303 A JP S56123303A JP 2688680 A JP2688680 A JP 2688680A JP 2688680 A JP2688680 A JP 2688680A JP S56123303 A JPS56123303 A JP S56123303A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- high speed
- speed steel
- reduction
- forging
- 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
- Metal Rolling (AREA)
- Powder Metallurgy (AREA)
Abstract
PURPOSE: To save forging process and apply hot working under lessened energy by hot rolling the powder high speed steel sintered compactly by an HIP method by specifying the relations among rolling ratios, temperatures, and reduction of area.
CONSTITUTION: High speed steel power is HIP treated, whereby a compactly sintered body is obtained. This powder high speed steel billet is hot rolled without forging. This hot rolling is accomplished at 5W50% reduction of area per pass at 1,000W1,200°C in a region of ≤4 rolling ratios and at 10W75% reduction of area per pass at ≥800°C in a region of ≤4 rolling ratios. This method saves forging prior to forging by performing rolling under gentle rolling conditions up to 4 rolling ratio at which there is no more segregation of deposit to grain boundary and performs working to a required size by the hot rolling alone. Hence, the reduction in cost and the considerable improvement in productivity are achieved.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2688680A JPS5817802B2 (en) | 1980-03-03 | 1980-03-03 | Hot working method for powder high speed steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2688680A JPS5817802B2 (en) | 1980-03-03 | 1980-03-03 | Hot working method for powder high speed steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56123303A true JPS56123303A (en) | 1981-09-28 |
| JPS5817802B2 JPS5817802B2 (en) | 1983-04-09 |
Family
ID=12205741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2688680A Expired JPS5817802B2 (en) | 1980-03-03 | 1980-03-03 | Hot working method for powder high speed steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5817802B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07179908A (en) * | 1993-09-27 | 1995-07-18 | Crucible Materials Corp | Sulfur-containing powder metallurgy tool steel object |
-
1980
- 1980-03-03 JP JP2688680A patent/JPS5817802B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07179908A (en) * | 1993-09-27 | 1995-07-18 | Crucible Materials Corp | Sulfur-containing powder metallurgy tool steel object |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5817802B2 (en) | 1983-04-09 |
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