DE1191521B - Process for arc block head heating - Google Patents

Process for arc block head heating

Info

Publication number
DE1191521B
DE1191521B DEK49338A DEK0049338A DE1191521B DE 1191521 B DE1191521 B DE 1191521B DE K49338 A DEK49338 A DE K49338A DE K0049338 A DEK0049338 A DE K0049338A DE 1191521 B DE1191521 B DE 1191521B
Authority
DE
Germany
Prior art keywords
block head
head heating
arc
arc block
slag
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.)
Pending
Application number
DEK49338A
Other languages
German (de)
Inventor
Dr-Ing Hans Joachim Kirschning
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kloeckner Werke AG
Original Assignee
Kloeckner Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kloeckner Werke AG filed Critical Kloeckner Werke AG
Priority to DEK49338A priority Critical patent/DE1191521B/en
Priority to LU45375D priority patent/LU45375A1/xx
Priority to BE643437A priority patent/BE643437A/xx
Priority to AT161464A priority patent/AT239982B/en
Priority to NL6403075A priority patent/NL6403075A/xx
Priority to GB13020/64A priority patent/GB1005484A/en
Publication of DE1191521B publication Critical patent/DE1191521B/en
Pending legal-status Critical Current

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
    • C21C5/52—Manufacture of steel in electric furnaces
    • 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
    • B22D27/02—Use of electric or magnetic effects
    • 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
    • B22D27/06—Heating the top discard of ingots
    • 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)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Details (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Description

BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Int. α.:Int. α .:

B22dB22d

Deutsche Kl.: 31 c -14German class: 31c -14

Nummer: 1191521Number: 1191521

Aktenzeichen: K 49338 VI a/31 cFile number: K 49338 VI a / 31 c

Anmeldetag: 30. März 1963 Filing date: March 30, 1963

Auslegetag: 22. April 1965Opening day: April 22, 1965

Die vorliegende Erfindung bezieht sich auf Verfahren zur Lichtbogen-Blockkopfbeheizung.The present invention relates to methods of arc ingot head heating.

Es sind schon Verfahren zur elektrischen Blockkopfbeheizung bekannt, bei denen die freie Oberfläche des flüssigen Stahls in der Gießform mit einer Schlackenmischung abgedeckt ist, die eine solche Zusammensetzung aufweist, daß bei der Arbeitstemperatur die Oberfläche des Metalls gut bedeckt ist und eine wirksame Übertragung der im Lichtbogen entwickelten Wärme auf das darunter befindliehe Material bewirkt wird.There are already known methods for electrical block head heating in which the free surface of the liquid steel in the casting mold is covered with a slag mixture that has such a Composition has that at the working temperature the surface of the metal well covered and an effective transfer of the heat developed in the arc to the one below Material is effected.

Diese bekannten Verfahren haben jedoch den Nachteil, daß der Wirkungsgrad dieser Blockkopfbeheizung weit unter dem zu erwartenden Maße bleibt.However, these known methods have the disadvantage that the efficiency of this block head heating remains far below the expected level.

Der Erfinder hat sich die Aufgabe gestellt, die Ursachen dieser Erscheinung aufzuklären und eine technische Lehre zu deren Vermeidung zu geben.The inventor has set himself the task of clearing up the causes of this phenomenon and one to give technical teaching on how to avoid them.

Der Erfindung liegt die Erkenntnis zugrunde, daß sich das Widerstandsverhalten der Schlacke während der Dauer des Blockkopfbeheizungsvorganges erheblich ändern kann, so daß die elektrischen Daten des Lichtbogens diesen Verhältnissen laufend angepaßt werden müssen.The invention is based on the knowledge that the resistance behavior of the slag during the duration of the block head heating process can change significantly, so that the electrical data of the arc must be continuously adapted to these conditions.

In vielen Anwendungsfällen führt das wechselnde Widerstandsverhalten der Schlacke dazu, daß bei den vorgegebenen elektrischen Werten der Lichtbogen nicht mehr in seiner gesamten Ausdehnung in der Schlacke verläuft; es hat sich aber gezeigt, daß diese Erscheinung für den Wärmeübergang unzuträglich ist.In many applications, the changing resistance behavior of the slag leads to the specified electrical values of the arc no longer in its entire extent runs in the slag; but it has been shown that this phenomenon is not beneficial for heat transfer is.

Die vorliegende Erfindung vermeidet die genannten Nachteile dadurch, daß entsprechend der Änderung des Widerstandsverhaltens der Schlacke die elektrischen Werte des Lichtbogens so eingestellt Verfahren zur Lichtbogen-BlockkopfbeheizungThe present invention avoids the disadvantages mentioned in that according to the Changing the resistance behavior of the slag adjusts the electrical values of the arc Process for arc block head heating

Anmelder:Applicant:

Klöckner-Werke Aktiengesellschaft,
Duisburg, Mülheimer Str. 50Klöckner-Werke Aktiengesellschaft,
Duisburg, Mülheimer Str. 50

Als Erfinder benannt:Named as inventor:

Dr.-Ing. Hans Joachim Kirschning,Dr.-Ing. Hans Joachim Kirschning,

Mülheim/Ruhr-SpeldorfMülheim / Ruhr-Speldorf

werden, daß sichergestellt ist, daß der gesamte Bogen in der Schlacke verläuft.that it is ensured that the entire arc runs in the slag.

Da im Laufe des Beheizungsprozesses der Lunker tiefer wird, erhöht sich im allgemeinen der Schlackenwiderstand.Since the cavity gets deeper in the course of the heating process, it generally increases Slag resistance.

Ein besonderer Vorteil der vorliegenden Erfindung besteht darin, daß im Gegensatz zu den bekannten Verfahren auch bei größeren Kokillen auf die Verwendung von wärmedämmenden Hauben während des Beheizungsvorganges verzichtet werden kann.A particular advantage of the present invention is that, in contrast to the known Procedure for the use of heat-insulating hoods, even with larger molds can be dispensed with during the heating process.

Claims (1)

Patentanspruch:Claim: Verfahren zur Lichtbogen-Blockkopfbeheizung, dadurch gekennzeichnet, daß entsprechend der Änderung des Widerstandsverhaltens der Schlacke die elektrischen Werte des Lichtbogens so eingestellt werden, daß sichergestellt ist, daß der gesamte Bogen in der Schlacke verläuft.Process for arc block head heating, characterized in that The electrical values correspond to the change in the resistance behavior of the slag of the arc can be adjusted to ensure that the entire arc is in the Slag runs.
DEK49338A 1963-03-30 1963-03-30 Process for arc block head heating Pending DE1191521B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DEK49338A DE1191521B (en) 1963-03-30 1963-03-30 Process for arc block head heating
LU45375D LU45375A1 (en) 1963-03-30 1964-02-06
BE643437A BE643437A (en) 1963-03-30 1964-02-06
AT161464A AT239982B (en) 1963-03-30 1964-02-25 Process for arc block head heating
NL6403075A NL6403075A (en) 1963-03-30 1964-03-23
GB13020/64A GB1005484A (en) 1963-03-30 1964-03-26 Production of steel ingots

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK49338A DE1191521B (en) 1963-03-30 1963-03-30 Process for arc block head heating

Publications (1)

Publication Number Publication Date
DE1191521B true DE1191521B (en) 1965-04-22

Family

ID=7225226

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK49338A Pending DE1191521B (en) 1963-03-30 1963-03-30 Process for arc block head heating

Country Status (4)

Country Link
AT (1) AT239982B (en)
BE (1) BE643437A (en)
DE (1) DE1191521B (en)
GB (1) GB1005484A (en)

Also Published As

Publication number Publication date
BE643437A (en) 1964-05-29
AT239982B (en) 1965-05-10
GB1005484A (en) 1965-09-22

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