KR950013621A - Molten steel manufacturing method - Google Patents

Molten steel manufacturing method 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
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KR
South Korea
Prior art keywords
molten steel
added
manufacturing
weight
grade
Prior art date
Application number
KR1019930024916A
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Korean (ko)
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KR950012398B1 (en
Inventor
김기성
이정모
Original Assignee
조말수
포항종합제철 주식회사
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.)
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Publication date
Application filed by 조말수, 포항종합제철 주식회사 filed Critical 조말수
Priority to KR1019930024916A priority Critical patent/KR950012398B1/en
Publication of KR950013621A publication Critical patent/KR950013621A/en
Application granted granted Critical
Publication of KR950012398B1 publication Critical patent/KR950012398B1/en

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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

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.The present invention relates to a molten steel manufacturing method for making an extra-purpose molten steel or a returned molten steel generated in a steelmaking and continuous casting process into high-grade molten steel, the first process of ladleing the molten steel into one or more ladles, and the ladle In the molten steel, a slag of 0.3 to 0.8 weight perceton is added to the converter outflow slag in the electric arc heating system, and the ferrous alloy is added to increase the temperature of the molten steel by injecting argon gas. It is a molten steel manufacturing method characterized by improving the quality of the molten steel, real error rate improvement and cost texture by consisting of the second process to separate the floating material in the molten steel to be maintained at ~ 1.05 percent (Cwt%).

Description

용강제조방법Molten steel manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 제강 및 목적외 용강의 처리 공정도,1 is a process chart of steelmaking and off-line molten steel,

제2도는 체인걸이를 이용하여 리래들링(relading)하는 방법을 보여주는 도면,2 is a view showing a method of relading (relading) using a chain hook,

제3도는 래들(ladle) 하부노즐(nozzle)을 이용하여 리래들링(reladling)하는 방법을 보여주는 도면,3 is a view illustrating a method of reladling using a ladle lower nozzle;

제4도는 전기아크(arc) 가열장치의 단면도 .4 is a sectional view of an electric arc heating apparatus.

Claims (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.1. A method of manufacturing low-grade molten steel out of purpose or sent back to high-grade molten steel in a steelmaking or continuous casting process, the method comprising: a first process of relating the molten steel into at least one blank ladle; and heating the related molten steel by electric arc heating Into the converter, slakes of 0.3 to 0.8% by weight relative to the weight of converter outflow slag were added, and ferroalloy was added to raise the temperature of the uneven steel by injecting argon gas to obtain carbon weight of 0.05 to 1.05% (Cwt%). A molten steel manufacturing method, characterized in that it consists of a second step of separating and floating the contents in the molten steel to be maintained. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930024916A 1993-11-22 1993-11-22 Ingot steel making method KR950012398B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930024916A KR950012398B1 (en) 1993-11-22 1993-11-22 Ingot steel making method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930024916A KR950012398B1 (en) 1993-11-22 1993-11-22 Ingot steel making method

Publications (2)

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

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930024916A KR950012398B1 (en) 1993-11-22 1993-11-22 Ingot steel making method

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KR (1) KR950012398B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100862030B1 (en) * 2001-12-22 2008-10-07 주식회사 포스코 Atmosphere corrosion resisting steel producting method in mini mill process
KR101246198B1 (en) * 2011-02-24 2013-03-21 현대제철 주식회사 Method for controlling refining in ladle furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100862030B1 (en) * 2001-12-22 2008-10-07 주식회사 포스코 Atmosphere corrosion resisting steel producting method in mini mill process
KR101246198B1 (en) * 2011-02-24 2013-03-21 현대제철 주식회사 Method for controlling refining in ladle furnace

Also Published As

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

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