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KR950013621A - 용강제조방법 - Google Patents

용강제조방법 Download PDF

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Publication number
KR950013621A
KR950013621A KR1019930024916A KR930024916A KR950013621A KR 950013621 A KR950013621 A KR 950013621A KR 1019930024916 A KR1019930024916 A KR 1019930024916A KR 930024916 A KR930024916 A KR 930024916A KR 950013621 A KR950013621 A KR 950013621A
Authority
KR
South Korea
Prior art keywords
molten steel
added
manufacturing
weight
grade
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.)
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Application number
KR1019930024916A
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English (en)
Other versions
KR950012398B1 (ko
Inventor
김기성
이정모
Original Assignee
조말수
포항종합제철 주식회사
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Publication date
Application filed by 조말수, 포항종합제철 주식회사 filed Critical 조말수
Priority to KR1019930024916A priority Critical patent/KR950012398B1/ko
Publication of KR950013621A publication Critical patent/KR950013621A/ko
Application granted granted Critical
Publication of KR950012398B1 publication Critical patent/KR950012398B1/ko
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
    • 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
    • C21C7/0025—Adding carbon material
    • 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

Landscapes

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

Abstract

본 발명은 제강 및 연속주조 공정에서 발생한 목적외 용강 또는 회송된 지급용강을 고급용강으로 만드는 용강제조 방법에 관한 것으로서, 상기 용강을 하나 이상의 빈래들에 리래들링하는 제1공정과, 상기 리래들링 된 용강을 전기아크 가열장치에서 전로유출 슬래그대비 0.3∼0.8중량 퍼세튼의 후락스를 투입하고, 합금철을 투입하여 승온후 아로곤가스의 취입으로 용강의 온도를 균일하게 하여 탄소중량이 0.05∼1.05퍼센트(Cwt%)로 유지되도록 용강내 개제물을 분리 부상시키는 제2공정으로 이루어져 용강의 품질향상 및 실수율향상과 원가의 질감을 특징으로 하는 용강제조 방법이다.

Description

용강제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 제강 및 목적외 용강의 처리 공정도,
제2도는 체인걸이를 이용하여 리래들링(relading)하는 방법을 보여주는 도면,
제3도는 래들(ladle) 하부노즐(nozzle)을 이용하여 리래들링(reladling)하는 방법을 보여주는 도면,
제4도는 전기아크(arc) 가열장치의 단면도 .

Claims (1)

  1. 제강 또는 연속주조 공정에서 목적외 또는 회송된 저급용강을 고급용강으로 제조하는 방법에 있어서, 상기 용강을 한대 이상의 빈래들에 리래들링 하는 제1공정과, 상기 리래들링된 용강을 전기아크 가열장치에서 전로유출 슬래그 중량대비 0.3∼0.8중량 퍼센트의 후락스를 투입하고, 합금철을 투입하여 승온후 아르곤 가스의 취입으로 웅강의 은도를 균일하게 하여 탄소중량이 0.05∼1.05퍼센트(Cwt%)로 유지되도륵 용강내 게재물을 분리 부상시키는 제2공정으로 이루어짐을 특징으로 하는 용강제조 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930024916A 1993-11-22 1993-11-22 용강제조방법 Expired - Fee Related KR950012398B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930024916A KR950012398B1 (ko) 1993-11-22 1993-11-22 용강제조방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930024916A KR950012398B1 (ko) 1993-11-22 1993-11-22 용강제조방법

Publications (2)

Publication Number Publication Date
KR950013621A true KR950013621A (ko) 1995-06-15
KR950012398B1 KR950012398B1 (ko) 1995-10-17

Family

ID=19368657

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930024916A Expired - Fee Related KR950012398B1 (ko) 1993-11-22 1993-11-22 용강제조방법

Country Status (1)

Country Link
KR (1) KR950012398B1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100862030B1 (ko) * 2001-12-22 2008-10-07 주식회사 포스코 미니밀 프로세스에서의 고내후성 용강 제조방법
KR101246198B1 (ko) * 2011-02-24 2013-03-21 현대제철 주식회사 래들 퍼니스의 정련 제어방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100862030B1 (ko) * 2001-12-22 2008-10-07 주식회사 포스코 미니밀 프로세스에서의 고내후성 용강 제조방법
KR101246198B1 (ko) * 2011-02-24 2013-03-21 현대제철 주식회사 래들 퍼니스의 정련 제어방법

Also Published As

Publication number Publication date
KR950012398B1 (ko) 1995-10-17

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