GB1393468A - Production of stainless steel - Google Patents
Production of stainless steelInfo
- Publication number
- GB1393468A GB1393468A GB2998073A GB2998073A GB1393468A GB 1393468 A GB1393468 A GB 1393468A GB 2998073 A GB2998073 A GB 2998073A GB 2998073 A GB2998073 A GB 2998073A GB 1393468 A GB1393468 A GB 1393468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stainless steel
- added
- slag
- june
- supplied
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/005—Manufacture of stainless steel
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
1393468 Producing stainless steel ALLEGHENY LUDLUM INDUSTRIES Inc 25 June 1973 [29 June 1972] 29980/73 Heading C7D In the manufacture of stainless steel having a C content of less than 0À03%, cold Cr-containing material, e.g. Fe-Cr and stainless steel scrap, is charged into a basic oxygen furnace with molten ferrous metal and top blown with O 2 supplied by a water-cooled lance. When at least 80% of the total O 2 has been supplied, a mixture of 5 parts by vol of a non-oxidizing gas, e.g. Ar, and 2 parts of O 2 is blown on to the surface for the remainder of the blow. The C content of the total charge is at least 3À5% and the Cr-containing- material constitutes at least 10 wt per cent of the total charge. Ni may be added to the ferrous metal and/or scrap if desired. Slag-forming ingredients such as burnt lime, dolomitic burnt lime and fluorspar may be added before or during blowing. After blowing has ceased, a mixture of Fe-Cr, Si and CaF2 may be added to recover Cr from the slag.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26734072A | 1972-06-29 | 1972-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1393468A true GB1393468A (en) | 1975-05-07 |
Family
ID=23018387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2998073A Expired GB1393468A (en) | 1972-06-29 | 1973-06-25 | Production of stainless steel |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS5635724B2 (en) |
| AR (1) | AR197991A1 (en) |
| AT (1) | AT338310B (en) |
| AU (1) | AU5658973A (en) |
| BE (1) | BE801004A (en) |
| BR (1) | BR7304715D0 (en) |
| CA (1) | CA978367A (en) |
| DE (1) | DE2331600A1 (en) |
| ES (1) | ES415761A1 (en) |
| FR (1) | FR2190925B1 (en) |
| GB (1) | GB1393468A (en) |
| IT (1) | IT985756B (en) |
| NL (1) | NL7308843A (en) |
| PL (1) | PL84113B1 (en) |
| SE (1) | SE419560B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6023182B2 (en) * | 1979-12-01 | 1985-06-06 | 新日本製鐵株式会社 | Melting method for medium carbon high chromium molten metal |
| JPS5862520U (en) * | 1981-10-21 | 1983-04-27 | カシオ計算機株式会社 | Key switch for small electronic equipment |
| US4397685A (en) * | 1982-03-26 | 1983-08-09 | Union Carbide Corporation | Production of ultra low carbon steel by the basic oxygen process |
-
1973
- 1973-06-06 AU AU56589/73A patent/AU5658973A/en not_active Expired
- 1973-06-09 ES ES415761A patent/ES415761A1/en not_active Expired
- 1973-06-15 BE BE132347A patent/BE801004A/en not_active IP Right Cessation
- 1973-06-15 FR FR7321876A patent/FR2190925B1/fr not_active Expired
- 1973-06-20 DE DE2331600A patent/DE2331600A1/en not_active Ceased
- 1973-06-20 CA CA174,516A patent/CA978367A/en not_active Expired
- 1973-06-25 AT AT554373A patent/AT338310B/en not_active IP Right Cessation
- 1973-06-25 IT IT5098773A patent/IT985756B/en active
- 1973-06-25 GB GB2998073A patent/GB1393468A/en not_active Expired
- 1973-06-26 NL NL7308843A patent/NL7308843A/xx not_active Application Discontinuation
- 1973-06-27 BR BR471573A patent/BR7304715D0/en unknown
- 1973-06-28 AR AR24879473A patent/AR197991A1/en active
- 1973-06-29 PL PL1973163713A patent/PL84113B1/pl unknown
- 1973-06-29 SE SE7309257A patent/SE419560B/en unknown
- 1973-06-29 JP JP7296673A patent/JPS5635724B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AT338310B (en) | 1977-08-25 |
| AU5658973A (en) | 1974-12-12 |
| JPS5635724B2 (en) | 1981-08-19 |
| ATA554373A (en) | 1976-12-15 |
| BE801004A (en) | 1973-12-17 |
| SE419560B (en) | 1981-08-10 |
| DE2331600A1 (en) | 1974-01-17 |
| FR2190925A1 (en) | 1974-02-01 |
| NL7308843A (en) | 1974-01-02 |
| AR197991A1 (en) | 1974-05-24 |
| BR7304715D0 (en) | 1974-08-15 |
| CA978367A (en) | 1975-11-25 |
| ES415761A1 (en) | 1976-02-01 |
| FR2190925B1 (en) | 1978-06-30 |
| JPS4952709A (en) | 1974-05-22 |
| PL84113B1 (en) | 1976-03-31 |
| IT985756B (en) | 1974-12-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |