JPS57116736A - Manufacture of integrated steel ingot having partially different composition - Google Patents
Manufacture of integrated steel ingot having partially different compositionInfo
- Publication number
- JPS57116736A JPS57116736A JP312081A JP312081A JPS57116736A JP S57116736 A JPS57116736 A JP S57116736A JP 312081 A JP312081 A JP 312081A JP 312081 A JP312081 A JP 312081A JP S57116736 A JPS57116736 A JP S57116736A
- Authority
- JP
- Japan
- Prior art keywords
- remelting
- atmosphere
- ingot
- manufacture
- steel ingot
- 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
- Treatment Of Steel In Its Molten State (AREA)
Abstract
PURPOSE: To manufacture easily and surely an integrated high and low pressure rotor or the like by remelting a steel ingot having a single composition by a consumption system arc melting method while suitably changing the melting atmosphere from a vacuum or an inert gas atmosphere to a nitrogen atmosphere between the first half and the latter half of the remelting or during the remelting.
CONSTITUTION: An Fe alloy contg. by wt., 0.05W0.3% C, <0.1% Si, 0.3W1.5% Mn, 0.5W13% Cr, 0.5W2% Mo, 0.1W0.5% V, 0.5W2% Ni and 0.01W0.5% Nb or Ta is forged to manufacture a steel ingot having said single composition. This ingot is remelted by a consumption system arc melting method while changing the remelting atmosphere from a vacuum or an inert gas atmosphere to a ni- trogen atmosphere at any time during the remelting to add 0.01W0.2% N. Thus, a single ingot having a partially different composition is manufactured. This ingot is formed into the shape of an integrated high and low pressure turbine rotor or the like.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP312081A JPS57116736A (en) | 1981-01-14 | 1981-01-14 | Manufacture of integrated steel ingot having partially different composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP312081A JPS57116736A (en) | 1981-01-14 | 1981-01-14 | Manufacture of integrated steel ingot having partially different composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57116736A true JPS57116736A (en) | 1982-07-20 |
Family
ID=11548491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP312081A Pending JPS57116736A (en) | 1981-01-14 | 1981-01-14 | Manufacture of integrated steel ingot having partially different composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57116736A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59164656A (en) * | 1983-03-10 | 1984-09-17 | 富士不燃建材工業株式会社 | Manufacture of refractory construction material |
| JPS59145514U (en) * | 1983-03-17 | 1984-09-28 | 千吉株式会社 | Layered sleeves |
-
1981
- 1981-01-14 JP JP312081A patent/JPS57116736A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59164656A (en) * | 1983-03-10 | 1984-09-17 | 富士不燃建材工業株式会社 | Manufacture of refractory construction material |
| JPS59145514U (en) * | 1983-03-17 | 1984-09-28 | 千吉株式会社 | Layered sleeves |
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