JPS55152118A - Preparation of high chromium steel by vacuum oxygen lancing method - Google Patents
Preparation of high chromium steel by vacuum oxygen lancing methodInfo
- Publication number
- JPS55152118A JPS55152118A JP5926979A JP5926979A JPS55152118A JP S55152118 A JPS55152118 A JP S55152118A JP 5926979 A JP5926979 A JP 5926979A JP 5926979 A JP5926979 A JP 5926979A JP S55152118 A JPS55152118 A JP S55152118A
- Authority
- JP
- Japan
- Prior art keywords
- oxygen lancing
- chromium steel
- high chromium
- oxygen
- vacuum
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
PURPOSE: To refine the low carbon high chromium steel economically while the oxidation loss of Cr is reduced by a method wherein a preliminary decarburized amount by the oxygen lancing in the atmosheric pressure is reduced and a decarburized amount is increased by a vacuum oxygen lancing.
CONSTITUTION: In case of preparing the low carbon high chromium steel, as a stock material, steel scraps, high carbon Fe-Cr, high carbon Fe-Ni or the like are used and molten by an arc furnace. In this time, if a molten C amount is 0.80% or below, a vacuum oxygen lancing method (VOD) is directly applied to decarburize and refine to a low carbon range and, if 0.80W1.20% or more, the oxygen lancing is carried out in the atmospheric pressure to decarburize. In the C content of this degree, the oxidation of Cr is low even by the oxygen lancing decarburization under the atmospheric pressure. Particularly, after a high Cr steel containing C: 0.30W 1.20% is subjected to the oxygen lancing in an oxygen quantity 0.5Nm3/min., the vacuum natural decarburization is carried out at least for 10 or more min. to prepare a low carbon high chromium steel without oxidizing Cr.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54059269A JPS5921368B2 (en) | 1979-05-14 | 1979-05-14 | Manufacturing method of high chromium steel by vacuum oxygen blowing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54059269A JPS5921368B2 (en) | 1979-05-14 | 1979-05-14 | Manufacturing method of high chromium steel by vacuum oxygen blowing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55152118A true JPS55152118A (en) | 1980-11-27 |
| JPS5921368B2 JPS5921368B2 (en) | 1984-05-19 |
Family
ID=13108474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54059269A Expired JPS5921368B2 (en) | 1979-05-14 | 1979-05-14 | Manufacturing method of high chromium steel by vacuum oxygen blowing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921368B2 (en) |
-
1979
- 1979-05-14 JP JP54059269A patent/JPS5921368B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5921368B2 (en) | 1984-05-19 |
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