DE223378C - - Google Patents
Info
- Publication number
- DE223378C DE223378C DENDAT223378D DE223378DA DE223378C DE 223378 C DE223378 C DE 223378C DE NDAT223378 D DENDAT223378 D DE NDAT223378D DE 223378D A DE223378D A DE 223378DA DE 223378 C DE223378 C DE 223378C
- Authority
- DE
- Germany
- Prior art keywords
- steel
- temperature
- pouring
- tundish
- pieces
- 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.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/06—Heating or cooling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Es ist bekannt, daß die Güte des Flußeisens oder Stahles unter anderem auch von
einem Vergießen bei möglichst niedriger Temperatur abhängt; anderenfalls können verschiedene
Erscheinungen auftreten, wie z. B. Längs- und Querrisse auf der Blockoberfläche,
Hohlräume in dem Blockinneren. Um die Temperatur des Stahles zu vermindern, werden
verschiedene Mittel angewendet,
ίο i. Temperaturverminderung in der Pfanne,It is known that the quality of the fluent iron or steel depends, among other things, on being cast at the lowest possible temperature; otherwise, various phenomena can occur, such as B. Longitudinal and transverse cracks on the block surface, cavities in the block interior. Various means are used to reduce the temperature of the steel:
ίο i. Temperature reduction in the pan,
2. Temperaturverminderung außerhalb der Pfanne.2. Decrease in temperature outside the pan.
Die Temperaturverminderung in der PfanneThe decrease in temperature in the pan
»selbst durch Hinzufügen von Kühlschrott, wie Schienenenden usw., ist bisher die allgemein übliche. Doch führt sie nicht immer zu dem gewünschten Erfolg, da leicht ein Unterkühlen der ganzen Masse stattfindet und dadurch ein Versagen des Gießstopfens, was stets mit großen Verlusten und Gefahren für die Arbeiter verbunden ist. Um die Temperatur • des Pfanneninhaltes außerhalb der Gießpfanne zu vermindern, wird — wie bekannt — z. B. bei von oben zu gießenden Blöcken zwischen Gießpfanne und Blockform der sogenannte Gießtrichter oder die Gießwanne geschaltet.»Even by adding refrigerated scrap, such as rail ends, etc., this is so far general usual. However, it does not always lead to the desired success, since it is easy to overcool of the whole mass takes place and thereby a failure of the pouring plug, which is always with associated with great losses and dangers for the workers. About the temperature • to reduce the contents of the ladle outside the ladle, is - as is known - z. B. in the case of blocks to be poured from above, the so-called pouring funnel between the pouring ladle and the block mold or the tundish switched.
Eine möglichst weitergehende, betriebssichere Temperaturerniedrigung des Stahles unmittelbar vor seinem Eintritt in die Blockform wird nach der Erfindung dadurch erzielt, daß während des Durchfließens des Stahles durch den Gießtrichter Stahlstückchen mit oxydfreier Oberfläche in einer der Temperatur des Stahles entsprechenden Menge, von derselben oder einer ähnlichen Beschaffenheit, dem Inhalt der Gießj wanne zugeführt werden, und zwar in dem Maße, daß ein Vergießen des Stahles noch stattfinden kann, der flüssige Inhalt der Gießwanne jedoch nicht zur Erstarrung kommt. Diese Stahlstückchen werden bei dem Eintritt in die Gieß wanne geschmolzen, entziehen dem flüssigen Metall die überschüssige Wärme und befördern dadurch die Entgasung des Stahles. Der Stahl tritt in die Form mit einer Temperatur, die nicht wesentlich über seiner Erstarrungstemperatur liegt, und erstarrt ohne Bildung von Längs- und Querrissen.A more extensive, operationally reliable temperature reduction of the steel immediately before its entry into the block form is achieved according to the invention that during the flowing of the steel through the pouring funnel steel pieces with oxide-free Surface in an amount corresponding to the temperature of the steel, of the same or one Similar texture, the contents of the Gießj tub are supplied, in that Measure that a pouring of the steel can still take place, the liquid contents of the tundish but does not solidify. These pieces of steel are at the entrance melted in the tundish, the excess heat and withdraw from the liquid metal thereby promote the degassing of the steel. The steel enters the mold at a temperature which is not significantly above its solidification temperature, and solidifies without Formation of longitudinal and transverse cracks.
Das Verfahren findet besonders bei dem Vergießen von Stahl aus dem elektrischen Ofen Anwendung.The process takes place particularly in the casting of steel from the electrical Oven application.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE223378C true DE223378C (en) |
Family
ID=484200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT223378D Active DE223378C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE223378C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5240492A (en) * | 1991-04-25 | 1993-08-31 | Foseco International Limited | Metallurgical fluxes |
US5538070A (en) * | 1993-08-26 | 1996-07-23 | Foseco International Limited | Mould fluxes and their use in the continuous casting of steel |
-
0
- DE DENDAT223378D patent/DE223378C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5240492A (en) * | 1991-04-25 | 1993-08-31 | Foseco International Limited | Metallurgical fluxes |
US5538070A (en) * | 1993-08-26 | 1996-07-23 | Foseco International Limited | Mould fluxes and their use in the continuous casting of steel |
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