KR950018508A - Method of manufacturing carbon dioxide welding rod steel - Google Patents

Method of manufacturing carbon dioxide welding rod steel Download PDF

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Publication number
KR950018508A
KR950018508A KR1019930027670A KR930027670A KR950018508A KR 950018508 A KR950018508 A KR 950018508A KR 1019930027670 A KR1019930027670 A KR 1019930027670A KR 930027670 A KR930027670 A KR 930027670A KR 950018508 A KR950018508 A KR 950018508A
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KR
South Korea
Prior art keywords
steel
sio
welding rod
molten steel
carbon dioxide
Prior art date
Application number
KR1019930027670A
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Korean (ko)
Other versions
KR950012406B1 (en
Inventor
최인섭
박병곤
민중기
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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Application filed by 조말수, 포항종합제철 주식회사 filed Critical 조말수
Priority to KR1019930027670A priority Critical patent/KR950012406B1/en
Publication of KR950018508A publication Critical patent/KR950018508A/en
Application granted granted Critical
Publication of KR950012406B1 publication Critical patent/KR950012406B1/en

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    • 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
    • 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
    • C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal

Abstract

본 발명은 이산화탄소 용접봉으로 사용되는 강재의 제조방법에 관한 것으로써, 보다 상세하게는, 주조시 노즐막힘이 없고, 주편에서 핀홀등이 발생되지 않을 뿐만아니라 용접시 용접결함이 발생하지 않는 CO2용접봉용 강재를 제조하고자 하는데, 그 목적이 있다.The present invention relates to a method of manufacturing a steel product for use as a carbon electrode, more specifically, there is no nozzle clogging during casting, as well as the like pin holes do not occur in the cast steel CO 2 welding electrode does not occur to weld defects during welding To manufacture molten steel, the purpose is.

본 발명은 이산화탄소 용접봉용 강재를 제조하는 방법에 있어서, 전로에서 산소로 취련한 후 레이들로 용강을 출강할 시 Fe-Si및 Fe-Mn을 단독 또는 복합으로 레이들에 투입하여 용강중의 산소함량이 15ppm 이하가 되도록 탈산시킨 다음, CaO-SiO2계 플럭스를 레이들에 투입하여 슬래그를, CaO/SiO2중량비:1.0-1.4, SiO2/Al203중량비:2/0이상, T ㆍFe :1.0%이하 및 Al2O3:15% 이하가 되도록 조절한 후, 빌레트 연주기에서 연주하여 이산화탄소 용접봉용 강재를 제조하는 방법을 그 요지로 한다.The present invention is a method of manufacturing a carbon dioxide welding rod steel, the oxygen content in molten steel by injecting Fe-Si and Fe-Mn into the ladle alone or in combination when the molten steel is removed from the converter after the molten steel is blown with oxygen After deoxidizing to 15 ppm or less, a slag was introduced by adding CaO-SiO 2 flux to the ladle, and CaO / SiO 2 weight ratio: 1.0-1.4, SiO 2 / Al 2 0 3 weight ratio: 2/0 or more, T Fe: and the was adjusted such that more than 15%, the method for producing a carbon steel welding rod for to play on the billet continuous caster to the base: more than 1.0% and Al 2 O 3.

Description

이산화탄소 용접봉용 강재의 제조방법Method of manufacturing carbon dioxide welding rod steel

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

Claims (1)

이산화탄소 용접봉용 강재를 제조하는 방법에 있어서, 전로에서 산소로 취련한 후 레이들로 용강을 출강할 시 Fe-Si및 Fe-Mn을 단독 또는 복합으로 레이들에 투입하여 용강중의 산소함량이 15ppm 이하가 되도록 탈산시킨 다음, CaO-SiO2계 플럭스를 레이들에 투입하여 슬래그를, CaO/SiO2중량비:1.0-1.4, SiO2/Al203중량비:2/0이상, T ㆍFe :1.0%이하 및 Al2O3:15% 이하가 되도록 조절한 후, 빌레트 연주기에서 연주하여 이산화탄소 용접봉용 강재를 제조하는 방법.In the method of manufacturing carbon dioxide welding rod steel, Fe-Si and Fe-Mn is added to the ladle alone or in combination when the molten steel is pulled out by the oxygen in the converter and the oxygen content in the molten steel is 15 ppm or less. After the deoxidation was carried out, CaO-SiO 2 flux was added to the ladle, and slag was added to the CaO / SiO 2 weight ratio: 1.0-1.4, SiO 2 / Al 2 0 3 weight ratio: 2/0 or more, T ㆍ Fe: 1.0 Method of producing a carbon dioxide welding rod steel by adjusting to less than% and Al 2 O 3 : 15% or less, and then playing in a billet player. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930027670A 1993-12-14 1993-12-14 Making method of co2 welding rod KR950012406B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930027670A KR950012406B1 (en) 1993-12-14 1993-12-14 Making method of co2 welding rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930027670A KR950012406B1 (en) 1993-12-14 1993-12-14 Making method of co2 welding rod

Publications (2)

Publication Number Publication Date
KR950018508A true KR950018508A (en) 1995-07-22
KR950012406B1 KR950012406B1 (en) 1995-10-17

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ID=19370932

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930027670A KR950012406B1 (en) 1993-12-14 1993-12-14 Making method of co2 welding rod

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020000605A (en) * 2000-06-26 2002-01-05 이구택 A method for reducing visible dust during pouring dephosphorized melts into ladle
KR100435486B1 (en) * 2000-06-20 2004-06-10 주식회사 포스코 A method for manufacturing billets containing high silicon and having a small cross section

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100435486B1 (en) * 2000-06-20 2004-06-10 주식회사 포스코 A method for manufacturing billets containing high silicon and having a small cross section
KR20020000605A (en) * 2000-06-26 2002-01-05 이구택 A method for reducing visible dust during pouring dephosphorized melts into ladle

Also Published As

Publication number Publication date
KR950012406B1 (en) 1995-10-17

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