DE59904362D1 - Process for the production of steel - Google Patents

Process for the production of steel

Info

Publication number
DE59904362D1
DE59904362D1 DE59904362T DE59904362T DE59904362D1 DE 59904362 D1 DE59904362 D1 DE 59904362D1 DE 59904362 T DE59904362 T DE 59904362T DE 59904362 T DE59904362 T DE 59904362T DE 59904362 D1 DE59904362 D1 DE 59904362D1
Authority
DE
Germany
Prior art keywords
mgo
cao
pan
slag
casting
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 - Fee Related
Application number
DE59904362T
Other languages
German (de)
Inventor
Arnold Pfeiffer
Heinz-Peter Kaiser
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Application granted granted Critical
Publication of DE59904362D1 publication Critical patent/DE59904362D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal

Abstract

On tapping into the casting pan and/or on pan treatment with intensive bath rinsing, lime, MgO, dolomite or fluorspar is added as slag former. CaO, MgO or silicic acid as the three main components have the following weight ratios in the casting pan slag: CaO/MgO = 9.0-2.4, and (CaO + MgO)/SiO2. Steel having a carbon content of not more than 0.9 wt.% and a silicon content of 0.15-1.0 wt.% is produced by: bessemerizing pig iron to steel in a basic convertor in a one-stage LD process; slag-free tapping into the casting pan; alloying and deoxidizing with Si, C and Mn without the addition of Al; fine alloying; silicon deoxidizing; and continuously casting the steel. On tapping into the casting pan and/or on pan treatment with intensive bath rinsing, lime, MgO, dolomite or fluorspar is added as slag former. CaO, MgO or silicic acid as the three main components have the following weight ratios in the casting pan slag: CaO/MgO = 9.0-2.4, and (CaO + MgO)/SiO2.
DE59904362T 1998-10-07 1999-05-27 Process for the production of steel Expired - Fee Related DE59904362D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19847271A DE19847271C1 (en) 1998-10-07 1998-10-07 Process for the production of steel with a carbon content equal to or less than 0.9 percent by weight and an Si content of 0.15-1.0 percent by weight

Publications (1)

Publication Number Publication Date
DE59904362D1 true DE59904362D1 (en) 2003-04-03

Family

ID=7884388

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19847271A Expired - Fee Related DE19847271C1 (en) 1998-10-07 1998-10-07 Process for the production of steel with a carbon content equal to or less than 0.9 percent by weight and an Si content of 0.15-1.0 percent by weight
DE59904362T Expired - Fee Related DE59904362D1 (en) 1998-10-07 1999-05-27 Process for the production of steel

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19847271A Expired - Fee Related DE19847271C1 (en) 1998-10-07 1998-10-07 Process for the production of steel with a carbon content equal to or less than 0.9 percent by weight and an Si content of 0.15-1.0 percent by weight

Country Status (3)

Country Link
EP (1) EP0992299B1 (en)
AT (1) ATE233142T1 (en)
DE (2) DE19847271C1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009020990A1 (en) 2009-05-12 2010-11-18 Heraeus Electro-Nite International N.V. Floor spout for use in a container for molten metal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822735A (en) * 1969-07-11 1974-07-09 Nat Steel Corp Process for casting molten silicon-aluminum killed steel continuously
DE2527156B2 (en) * 1975-06-18 1980-09-04 Thyssen Niederrhein Ag Huetten- Und Walzwerke, 4200 Oberhausen Process for the pretreatment of molten steel in continuous casting
JPS609829A (en) * 1983-06-25 1985-01-18 Nippon Stainless Steel Co Ltd Production of austenitic stainless steel plate for road mirror
US4842642A (en) * 1988-01-19 1989-06-27 Hamilton Specialty Bar Division Of Slater Industries Inc. Additive for promoting slag formation in steel refining ladle
JPH07103416B2 (en) * 1990-08-31 1995-11-08 日本鋼管株式会社 High carbon steel wire manufacturing method
DE19520833C2 (en) * 1994-06-16 1998-06-04 Mannesmann Ag Process for the production of a seamless hot-worked pipe

Also Published As

Publication number Publication date
EP0992299B1 (en) 2003-02-26
DE19847271C1 (en) 2000-05-04
EP0992299A1 (en) 2000-04-12
ATE233142T1 (en) 2003-03-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee