ES472730A1 - Procedimiento para la fabricacion de aceros inoxidables - Google Patents
Procedimiento para la fabricacion de aceros inoxidablesInfo
- Publication number
- ES472730A1 ES472730A1 ES78472730A ES472730A ES472730A1 ES 472730 A1 ES472730 A1 ES 472730A1 ES 78472730 A ES78472730 A ES 78472730A ES 472730 A ES472730 A ES 472730A ES 472730 A1 ES472730 A1 ES 472730A1
- Authority
- ES
- Spain
- Prior art keywords
- nozzle
- refining phase
- blast
- inert gas
- refining
- 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
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/35—Blowing from above and through the bath
-
- 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
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)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Procedimiento para la fabricación de aceros inoxidables con contenidos de carbono muy pequeños a partir de una masa fundida de acero que contiene Cr o Cr-Ni con contenidos elevados de carbono en un convertidor, que presenta por lo menos una tobera de soplado por debajo del nivel del baño y por lo menos una lanza de soplado por encima del nivel del baño, introduciéndose en varias fases de afino de la masa fundida de acero en la primera fase de afino oxígeno a través de la lanza de soplado y gas inerte a través de la tobera de soplado y en fases de afino de la masa fundida de acero que siguen a aquélla a través de las toberas de soplado oxígeno en combinación con gas inerte, reduciéndose con el contenido de carbono en disminución en la masa fundida de acero la porción de oxígeno introducida en proporción con la porción de gas inerte, que se caracteriza por el hecho de que se emplean toberas de soplado que varían en la sección transversal, en las que se extiende una varilla desplazable axialmente desde el extremo de la tobera, desplazándose hacia delante la varilla en la primera fase de afino, con la disminución mayor posible de la sección transversal de la tobera, con su extremo libre hasta la boca de la tobera y la varilla se extrae en las fases de afino siguientes para obtener el mayor aumento posible de la sección transversal de la tobera.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2737832A DE2737832C3 (de) | 1977-08-22 | 1977-08-22 | Verwendung von im Querschnitt veränderlichen Blasdüsen zur Herstellung von rostfreien Stählen |
Publications (1)
Publication Number | Publication Date |
---|---|
ES472730A1 true ES472730A1 (es) | 1979-02-16 |
Family
ID=6017019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES78472730A Expired ES472730A1 (es) | 1977-08-22 | 1978-08-21 | Procedimiento para la fabricacion de aceros inoxidables |
Country Status (10)
Country | Link |
---|---|
US (1) | US4178173A (es) |
JP (1) | JPS5443113A (es) |
AR (1) | AR216170A1 (es) |
AT (1) | AT370774B (es) |
DE (1) | DE2737832C3 (es) |
ES (1) | ES472730A1 (es) |
FR (1) | FR2401225A1 (es) |
GB (1) | GB2002818B (es) |
IT (1) | IT1098098B (es) |
SE (1) | SE443154B (es) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4334921A (en) * | 1979-04-16 | 1982-06-15 | Nippon Steel Corporation | Converter steelmaking process |
US4280838A (en) * | 1979-05-24 | 1981-07-28 | Sumitomo Metal Industries, Ltd. | Production of carbon steel and low-alloy steel with bottom blowing basic oxygen furnace |
JPS6013402B2 (ja) * | 1979-05-24 | 1985-04-06 | 住友金属工業株式会社 | ガス循環システムを有する鋼の精錬装置 |
JPS5921367B2 (ja) * | 1979-05-29 | 1984-05-19 | 大同特殊鋼株式会社 | 含クロム鋼の精錬方法 |
JPS5623215A (en) * | 1979-08-02 | 1981-03-05 | Nippon Kokan Kk <Nkk> | Converter steel making method |
DE2931957A1 (de) * | 1979-08-07 | 1981-02-12 | Maximilianshuette Eisenwerk | Verfahren zur herstellung von stahl mit niedrigem wasserstoffgehalt in einem sauerstoffdurchblaskonverter |
EP0030360B2 (de) * | 1979-12-11 | 1988-09-28 | Eisenwerk-Gesellschaft Maximilianshütte mbH | Stahlerzeugungsverfahren |
DD154026A5 (de) * | 1979-12-28 | 1982-02-17 | Creusot Loire | Mischblasverfahren zur raffination der metalle im konverter |
US4302244A (en) * | 1980-07-18 | 1981-11-24 | Pennsylvania Engineering Corporation | Steel conversion method |
US4358314A (en) * | 1980-09-03 | 1982-11-09 | British Steel Corporation | Metal refining process |
AU540689B2 (en) * | 1980-12-20 | 1984-11-29 | K.K. Kobe Seiko Sho | Tuyere for blowing gas into molten metal bath container |
JPS57145917A (en) * | 1981-03-03 | 1982-09-09 | Sumitomo Metal Ind Ltd | Refining method for high chromium steel |
AU8474782A (en) * | 1981-06-19 | 1982-12-23 | British Steel Corp. | Refining of steel from pig iron |
US4470582A (en) * | 1982-02-15 | 1984-09-11 | Zirconal Processes Limited | Introduction of substances into molten metal |
US4397685A (en) * | 1982-03-26 | 1983-08-09 | Union Carbide Corporation | Production of ultra low carbon steel by the basic oxygen process |
US4402739A (en) * | 1982-07-13 | 1983-09-06 | Kawasaki Steel Corporation | Method of operation of a top-and-bottom blown converter |
US4557758A (en) * | 1982-12-16 | 1985-12-10 | Mizin Vladimir G | Steelmaking process |
JPS59150009A (ja) * | 1983-02-12 | 1984-08-28 | Daido Steel Co Ltd | 鋼の精錬方法 |
US4472195A (en) * | 1983-08-15 | 1984-09-18 | Olin Corporation | Process for decarburizing alloy melts |
JPS6050108A (ja) * | 1983-08-29 | 1985-03-19 | Nippon Steel Corp | 複合精錬炉による極低炭素鋼溶製法 |
US4462825A (en) * | 1983-09-01 | 1984-07-31 | United States Steel Corporation | Method for increasing the scrap melting capability of metal refining processes |
JPS6063307A (ja) * | 1983-09-14 | 1985-04-11 | Kawasaki Steel Corp | 極低炭素鋼の転炉製鋼法 |
US4783219A (en) * | 1985-11-13 | 1988-11-08 | Nippon Kokan Kabushiki Kaisha | Method for melting and reducing chrome ore |
JPS62167811A (ja) * | 1986-01-20 | 1987-07-24 | Nippon Kokan Kk <Nkk> | 溶融還元製鋼法 |
US4711430A (en) * | 1986-04-01 | 1987-12-08 | Union Carbide Corporation | Side-injected metal refining vessel and method |
US4647019A (en) * | 1986-04-01 | 1987-03-03 | Union Carbide Corporation | Very small refining vessel |
US4708738A (en) * | 1986-04-01 | 1987-11-24 | Union Carbide Corporation | Method for refining very small heats of molten metal |
WO1989002478A1 (en) * | 1987-09-10 | 1989-03-23 | Nkk Corporation | Process for producing molten stainless steel |
JPH01215912A (ja) * | 1988-02-24 | 1989-08-29 | Kawasaki Steel Corp | 含クロム溶鉄の製造方法 |
US5328658A (en) * | 1993-08-04 | 1994-07-12 | Daido Tokushuko Kabushiki Kaisha | Method of refining chromium-containing steel |
CN112212700B (zh) * | 2020-09-03 | 2021-09-14 | 钢铁研究总院 | 一种环缝式供气元件和供气方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE610265A (es) * | 1960-11-18 | |||
GB1253581A (en) * | 1968-02-24 | 1971-11-17 | Maximilianshuette Eisenwerk | Improvements in processes and apparatus for making steel |
US4001009A (en) * | 1969-04-03 | 1977-01-04 | Hannsgeorg Bauer | Process for the manufacture of steels with a high chromium content |
US3728101A (en) * | 1970-11-09 | 1973-04-17 | Armco Steel Corp | Process for making stainless steel |
AT337736B (de) * | 1973-02-12 | 1977-07-11 | Voest Ag | Verfahren zum frischen von roheisen |
US3854932A (en) * | 1973-06-18 | 1974-12-17 | Allegheny Ludlum Ind Inc | Process for production of stainless steel |
JPS518109A (es) * | 1974-06-07 | 1976-01-22 | British Steel Corp |
-
1977
- 1977-08-22 DE DE2737832A patent/DE2737832C3/de not_active Expired
-
1978
- 1978-08-09 SE SE7808526A patent/SE443154B/sv not_active IP Right Cessation
- 1978-08-10 US US05/932,598 patent/US4178173A/en not_active Expired - Lifetime
- 1978-08-16 AR AR273342A patent/AR216170A1/es active
- 1978-08-21 ES ES78472730A patent/ES472730A1/es not_active Expired
- 1978-08-21 GB GB7834068A patent/GB2002818B/en not_active Expired
- 1978-08-21 AT AT0606178A patent/AT370774B/de not_active IP Right Cessation
- 1978-08-22 IT IT26928/78A patent/IT1098098B/it active
- 1978-08-22 FR FR7824408A patent/FR2401225A1/fr active Granted
- 1978-08-22 JP JP10152678A patent/JPS5443113A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
DE2737832A1 (de) | 1979-03-01 |
GB2002818A (en) | 1979-02-28 |
SE7808526L (sv) | 1979-02-23 |
JPS5443113A (en) | 1979-04-05 |
ATA606178A (de) | 1982-09-15 |
JPS568084B2 (es) | 1981-02-21 |
SE443154B (sv) | 1986-02-17 |
IT7826928A0 (it) | 1978-08-22 |
US4178173A (en) | 1979-12-11 |
AR216170A1 (es) | 1979-11-30 |
GB2002818B (en) | 1982-03-03 |
AT370774B (de) | 1983-05-10 |
DE2737832C3 (de) | 1980-05-22 |
FR2401225A1 (fr) | 1979-03-23 |
IT1098098B (it) | 1985-08-31 |
DE2737832B2 (de) | 1979-09-13 |
FR2401225B1 (es) | 1982-12-03 |
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US4280838A (en) | Production of carbon steel and low-alloy steel with bottom blowing basic oxygen furnace | |
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JPS6123844B2 (es) | ||
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19991007 |