EP0226912A3 - Verfahren zum Herstellen von hochwertigem Stahl - Google Patents
Verfahren zum Herstellen von hochwertigem Stahl Download PDFInfo
- Publication number
- EP0226912A3 EP0226912A3 EP86116948A EP86116948A EP0226912A3 EP 0226912 A3 EP0226912 A3 EP 0226912A3 EP 86116948 A EP86116948 A EP 86116948A EP 86116948 A EP86116948 A EP 86116948A EP 0226912 A3 EP0226912 A3 EP 0226912A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- melt
- oxygen
- content
- quality steel
- making high
- 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.)
- Withdrawn
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000010959 steel Substances 0.000 title abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 5
- 239000000155 melt Substances 0.000 abstract 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- 229910052760 oxygen Inorganic materials 0.000 abstract 3
- 239000001301 oxygen Substances 0.000 abstract 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000007664 blowing Methods 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- 238000005261 decarburization Methods 0.000 abstract 1
- 150000002926 oxygen Chemical class 0.000 abstract 1
- 239000002893 slag Substances 0.000 abstract 1
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
- C21C5/32—Blowing from above
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
(1) eine Entkohlung durch Aufblasen von Sauerstoff bis unterhalb 0,1%°C;
(2) eine Behandlung der Schmelze mit Kohlenstoff, wobei man zerkleinerte Kohle mit möglichst grosser Ge schwindigkeit in das Bad einführt, so dass Schmelze und Schlacke in Wallung geraten, bis der Sauerstoffgehalt der Schmelze etwa 250-400 ppm O oder weniger und der Kohlen stoffgehalt etwa 0.04-0.07 % C oder mehr beträgt;
(3) eine auf die Lage der Temperatur des Produktes % C x % 0 und des angestrebten C-Gehaltes ausgerichtete gezielte Aufkohlung der Schmelze, so dass eine möglichst sauerstoff reie und dem anvisierten Kohlenstoffgehalt angenäherte Schmelze für die Fertigbehandlung in der Pfanne anfällt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU86225A LU86225A1 (de) | 1985-12-23 | 1985-12-23 | Verfahren zum herstellen von hochwertigem stahl |
| LU86225 | 1985-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0226912A2 EP0226912A2 (de) | 1987-07-01 |
| EP0226912A3 true EP0226912A3 (de) | 1989-04-26 |
Family
ID=19730608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86116948A Withdrawn EP0226912A3 (de) | 1985-12-23 | 1986-12-05 | Verfahren zum Herstellen von hochwertigem Stahl |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0226912A3 (de) |
| JP (1) | JPS62158811A (de) |
| AU (1) | AU590801B2 (de) |
| BR (1) | BR8605894A (de) |
| CA (1) | CA1288954C (de) |
| LU (1) | LU86225A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019215678A1 (de) * | 2019-10-11 | 2021-04-15 | Sms Group Gmbh | Verfahren zum Entphosphern einer Stahlschmelze während des Frischprozesses |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3702243A (en) * | 1969-04-15 | 1972-11-07 | Nat Steel Corp | Method of preparing deoxidized steel |
| LU84168A1 (de) * | 1982-05-25 | 1984-03-07 | Arbed | Verfahren zum aufkohlen von metallschmelzen |
| EP0165198A2 (de) * | 1984-05-15 | 1985-12-18 | Arbed S.A. | Lanze zur Beschleunigung fester Teilchen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6823981A (en) * | 1980-03-21 | 1981-10-15 | Nippon Steel Corporation | Multi-stage steel making |
-
1985
- 1985-12-23 LU LU86225A patent/LU86225A1/de unknown
-
1986
- 1986-10-23 AU AU64325/86A patent/AU590801B2/en not_active Ceased
- 1986-11-05 CA CA000522224A patent/CA1288954C/en not_active Expired - Lifetime
- 1986-12-02 BR BR8605894A patent/BR8605894A/pt unknown
- 1986-12-05 EP EP86116948A patent/EP0226912A3/de not_active Withdrawn
- 1986-12-22 JP JP30403586A patent/JPS62158811A/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3702243A (en) * | 1969-04-15 | 1972-11-07 | Nat Steel Corp | Method of preparing deoxidized steel |
| LU84168A1 (de) * | 1982-05-25 | 1984-03-07 | Arbed | Verfahren zum aufkohlen von metallschmelzen |
| EP0165198A2 (de) * | 1984-05-15 | 1985-12-18 | Arbed S.A. | Lanze zur Beschleunigung fester Teilchen |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62158811A (ja) | 1987-07-14 |
| EP0226912A2 (de) | 1987-07-01 |
| LU86225A1 (de) | 1987-07-24 |
| AU6432586A (en) | 1987-06-25 |
| BR8605894A (pt) | 1987-08-25 |
| CA1288954C (en) | 1991-09-17 |
| AU590801B2 (en) | 1989-11-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE DE ES FR GB IT NL SE |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE DE ES FR GB IT NL SE |
|
| 17P | Request for examination filed |
Effective date: 19891007 |
|
| 17Q | First examination report despatched |
Effective date: 19910117 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Withdrawal date: 19910518 |
|
| R18W | Application withdrawn (corrected) |
Effective date: 19910518 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SCHLEIMER, FRANCOIS |