CA2665220C - Affinage de l'acier - Google Patents

Affinage de l'acier Download PDF

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Publication number
CA2665220C
CA2665220C CA2665220A CA2665220A CA2665220C CA 2665220 C CA2665220 C CA 2665220C CA 2665220 A CA2665220 A CA 2665220A CA 2665220 A CA2665220 A CA 2665220A CA 2665220 C CA2665220 C CA 2665220C
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CA
Canada
Prior art keywords
calcium
amount
steel
molten steel
containing silicon
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
Application number
CA2665220A
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English (en)
Other versions
CA2665220A1 (fr
Inventor
Eugene Pretorius
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.)
Nucor Corp
Original Assignee
Nucor Corp
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 Nucor Corp filed Critical Nucor Corp
Priority to CA2665220A priority Critical patent/CA2665220C/fr
Publication of CA2665220A1 publication Critical patent/CA2665220A1/fr
Application granted granted Critical
Publication of CA2665220C publication Critical patent/CA2665220C/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C21C7/0006—Adding metallic additives
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C21C2300/00—Process aspects
    • C21C2300/08—Particular sequence of the process steps

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

Un procédé de formation et daffinage dacier portant du silicium fondu par addition dun additif au silicium contenant du calcium. On détermine si la quantité de calcium dans ladditif au silicium contenant du calcium est supérieure ou inférieure à la quantité de calcium souhaitée dans lacier fini. Si elle est supérieure à la quantité de calcium souhaitée dans lacier fini, on ajoute la quantité dadditif au silicium contenant du calcium correspondant au calcium en excès précocement dans la désoxydation ou laffinage pour combinaison avec de loxygène, du soufre et dautres impuretés dans laffinage, et on ajoute ladditif au silicium contenant du calcium contenant la quantité totale de calcium souhaitée dans lacier fini après la désulfurisation de lacier fondu et avant coulage. Si la quantité de calcium dans ladditif au silicium contenant du calcium ne fournit pas la quantité totale de calcium souhaitée dans lacier fini, on ajoute une quantité supplémentaire de calcium après désulfurisation de lacier fondu et avant coulage à lacier fondu pendant laffinage.
CA2665220A 2009-05-01 2009-05-01 Affinage de l'acier Active CA2665220C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2665220A CA2665220C (fr) 2009-05-01 2009-05-01 Affinage de l'acier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2665220A CA2665220C (fr) 2009-05-01 2009-05-01 Affinage de l'acier

Publications (2)

Publication Number Publication Date
CA2665220A1 CA2665220A1 (fr) 2010-11-01
CA2665220C true CA2665220C (fr) 2019-02-19

Family

ID=43063699

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2665220A Active CA2665220C (fr) 2009-05-01 2009-05-01 Affinage de l'acier

Country Status (1)

Country Link
CA (1) CA2665220C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115449599B (zh) * 2022-10-11 2023-09-19 安徽富凯特材有限公司 一种钢水钙脱氧的方法
CN117089666A (zh) * 2023-08-24 2023-11-21 湖南华菱涟源钢铁有限公司 低硫钢冶炼用铁水增硅的方法及低硫钢

Also Published As

Publication number Publication date
CA2665220A1 (fr) 2010-11-01

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