KR950016970A - Mold casting for continuous casting with high crystallinity - Google Patents

Mold casting for continuous casting with high crystallinity Download PDF

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Publication number
KR950016970A
KR950016970A KR1019930031107A KR930031107A KR950016970A KR 950016970 A KR950016970 A KR 950016970A KR 1019930031107 A KR1019930031107 A KR 1019930031107A KR 930031107 A KR930031107 A KR 930031107A KR 950016970 A KR950016970 A KR 950016970A
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South Korea
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mold
continuous casting
casting
less
flux
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KR960000325B1 (en
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장승현
이재우
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조말수
포항종합제철주식회사
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    • 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
    • B22D11/108—Feeding additives, powders, or the like

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

본 발명은 연속주조용 몰드 플럭스에 관한 것으로써, 결정질율에 근거하여 몰드 플럭스를 선정하므로써, 크랙민감강종의 연속주조시 면세로크랙발생을 저감시킬 수 있는 고결정질율을 갖는 연속주조용 몰드 플럭스를 제공하고자 하는데, 그 목적이 있다.The present invention relates to a mold casting flux for continuous casting, by selecting the mold flux based on the crystallinity rate, continuous casting mold flux having a high crystallinity that can reduce the generation of vertical cracks during continuous casting of crack-sensitive steel It is intended to provide a purpose.

본 발명은 연속주조용 몰드 플럭스에 있어서, wt%로, CaO : 28∼42.0%, SiO2: 29.0∼43.0%, MgO : 5.0%이하, Al2O3: 6.0% 이하, F : 6.0∼10.0%, Na2O : 14.0% 이하, B2O3: 1.0% 이하, 전탄소(Total Carbon) : 1.0∼6.0%, 및 기타불가피한 불순물로 조성되고; 염기도가 1.2∼1.3이고; 그리고 결정질율이 60.0% 이상인 고결정질유을 갖는 연속주조용 몰드 플럭스를 그 요지로 한다.In the mold casting for continuous casting, the present invention provides a wt% of CaO: 28 to 42.0%, SiO 2 : 29.0 to 43.0%, MgO: 5.0% or less, Al 2 O 3 : 6.0% or less, F: 6.0 to 10.0. %, Na 2 O: 14.0% or less, B 2 O 3 : 1.0% or less, total carbon: 1.0-6.0%, and other unavoidable impurities; Basicity is 1.2 to 1.3; And the main point is the mold casting for continuous casting which has high crystalline oil whose crystalline rate is 60.0% or more.

Description

고결정질율을 갖는 연속주조용 몰드플럭스Mold casting for continuous casting with high crystallinity

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

제1도: 몰드 플럭스의 결정질율과 염기도, F, Al2O3, B2O3및 MgO 함량과의 관계를 나타내는 그래프,1 is a graph showing the relationship between the crystallinity of the mold flux and basicity, F, Al 2 O 3 , B 2 O 3 and MgO content,

제2도: 서로다른 결정질율을 갖는 몰드 플럭스를 실제연주기에 사용하면서 채취한 슬라그 필름의 단면사진,FIG. 2: Cross-sectional photograph of slag film taken by using mold fluxes with different crystallinity in actual cycle

제3도: 결정질율과 면세로크랙발생기수와의 관계를 나타내는 그래프.Fig. 3: A graph showing the relationship between the crystallinity and the duty free crack generator.

Claims (2)

연속주조용 몰드 플럭스에 있어서, wt%로, CaO : 28∼42%, SiO2: 29.0∼43.0%, MgO : 5.0%이하, Al2O3: 6.0% 이하, F : 6.0∼10.0%, Na2O : 14.0% 이하, B2O3: 1.0% 이하, 전탄소(Total Carbon) : 1.0∼6.0%, 및 기타불가피한 불순물로 조성되고; 염기도가 1.2∼1.3이고; 그리고 결정질율이 60.0% 이상인 것을 특징으로 하는 고결정질을 갖는 연속주조용 몰드 플럭스.In the mold casting for continuous casting, in wt%, CaO: 28 to 42%, SiO 2 : 29.0 to 43.0%, MgO: 5.0% or less, Al 2 O 3 : 6.0% or less, F: 6.0 to 10.0%, Na 2 O: 14.0% or less, B 2 O 3 : 1.0% or less, total carbon: 1.0 to 6.0%, and other unavoidable impurities; Basicity is 1.2 to 1.3; And a crystalline rate of 60.0% or more, the mold flux for continuous casting having a high crystallinity. 제1항에 있어서, 결정질율이 20g의 몰드 플럭스를 600∼700℃로 유지된 전기로에서 탈탄시킨후 백금도가니에 넣어 용융시킨 다음, 밑으로 부터 수냉되는 백금용기에 부어 응고 냉각시켜 제조한 몰드 플럭스 필름의 단면상에서 결정질층 두께의 평균값과 몰드 플럭스 필름 전체두께와의 비율(%)로 산출한 것임을 특징으로 하는 고 결정질율을 갖는 연속주조용 몰드 플럭스.The mold flux according to claim 1, wherein the molten crystalline flux having a crystallinity of 20 g is decarburized in an electric furnace maintained at 600 to 700 DEG C, melted in a platinum crucible, and poured into a platinum vessel which is cooled from below. Mold flux for continuous casting having a high crystallinity, characterized in that it is calculated as the ratio (%) of the average value of the crystalline layer thickness on the cross section of the film and the total thickness of the mold flux film. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930031107A 1993-12-29 1993-12-29 Continuous casting mold flux with high crystallinity Expired - Fee Related KR960000325B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930031107A KR960000325B1 (en) 1993-12-29 1993-12-29 Continuous casting mold flux with high crystallinity

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Application Number Priority Date Filing Date Title
KR1019930031107A KR960000325B1 (en) 1993-12-29 1993-12-29 Continuous casting mold flux with high crystallinity

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KR950016970A true KR950016970A (en) 1995-07-20
KR960000325B1 KR960000325B1 (en) 1996-01-05

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020052121A (en) * 2000-12-23 2002-07-02 이구택 A mold flux having a larger interfacial thermal resistance in the continuous casting of steel
KR20040003315A (en) * 2002-07-02 2004-01-13 주식회사 포스코 Mold flux for law carbon steel plate manufacture
KR100490987B1 (en) * 2000-12-05 2005-05-24 주식회사 포스코 Mold flux for manufacturing high carbon steel
KR100810735B1 (en) * 2006-11-08 2008-03-07 주식회사 포스코 Mold flux melting furnace
WO2019132457A1 (en) * 2017-12-26 2019-07-04 주식회사 포스코 Method for manufacturing hypo-peritectic steel
CN113305274A (en) * 2020-02-26 2021-08-27 宝山钢铁股份有限公司 Medium carbon steel covering slag for continuous casting of wide and thick plates

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100490987B1 (en) * 2000-12-05 2005-05-24 주식회사 포스코 Mold flux for manufacturing high carbon steel
KR20020052121A (en) * 2000-12-23 2002-07-02 이구택 A mold flux having a larger interfacial thermal resistance in the continuous casting of steel
KR20040003315A (en) * 2002-07-02 2004-01-13 주식회사 포스코 Mold flux for law carbon steel plate manufacture
KR100810735B1 (en) * 2006-11-08 2008-03-07 주식회사 포스코 Mold flux melting furnace
WO2019132457A1 (en) * 2017-12-26 2019-07-04 주식회사 포스코 Method for manufacturing hypo-peritectic steel
CN113305274A (en) * 2020-02-26 2021-08-27 宝山钢铁股份有限公司 Medium carbon steel covering slag for continuous casting of wide and thick plates

Also Published As

Publication number Publication date
KR960000325B1 (en) 1996-01-05

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