KR860006555A - 저융점 금속의 첨가방법 - Google Patents

저융점 금속의 첨가방법 Download PDF

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Publication number
KR860006555A
KR860006555A KR1019860001087A KR860001087A KR860006555A KR 860006555 A KR860006555 A KR 860006555A KR 1019860001087 A KR1019860001087 A KR 1019860001087A KR 860001087 A KR860001087 A KR 860001087A KR 860006555 A KR860006555 A KR 860006555A
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KR
South Korea
Prior art keywords
low melting
melting point
point metal
molten steel
quicklime
Prior art date
Application number
KR1019860001087A
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English (en)
Other versions
KR900006686B1 (ko
Inventor
기요시 다까시마
기요시(외 6) 다까시마
이사오 스즈끼
마사시 요시다
류타쮸 다나까
노리유끼 마스미쮸
가쯔히로 기노시따
히로미 이시이
Original Assignee
신니뽄 세이데쓰 가부시기가이샤
다께다 유따까
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
Priority claimed from JP60029896A external-priority patent/JPS61199050A/ja
Priority claimed from JP60029895A external-priority patent/JPS61199049A/ja
Priority claimed from JP60082538A external-priority patent/JPS61243113A/ja
Priority claimed from JP60095898A external-priority patent/JPS61257414A/ja
Application filed by 신니뽄 세이데쓰 가부시기가이샤, 다께다 유따까 filed Critical 신니뽄 세이데쓰 가부시기가이샤
Publication of KR860006555A publication Critical patent/KR860006555A/ko
Application granted granted Critical
Publication of KR900006686B1 publication Critical patent/KR900006686B1/ko

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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
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting

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  • 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

내용 없음

Description

저융점 금속의 첨가방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 생석회의 첨가량과 처리용강 중의 탈황율의 관계를 도시하는 도표.
제4도는 모(母)용강이 저탄유황 쾌삭강(快削鋼)인 경우의 첨가하는 납과 생속회의 혼합비율의 차이에 의한 용강중[S]량의 시간경과에 따른 변화를 나타내는 도표.
제5도는 모용강이 기계구조용 유황쾌삭강(SC재)인 경우의 첨가하는 납과 생석회의 혼합비율의 차이에 의한 용강중[S]양의 시간경과에 따른 화를 나타내는 도표.

Claims (3)

  1. 래들내의 용강에 저융점 금속을 함유시키는 방법에 있어서, 저융점금속과 그 산화물의 1종류 또는 2종류 및 생석회와 탄소물질의 1종류 또는 2종류를 하기의 조건을 만족하도록 혼합하여 기체로 한 인잭션랜스에 의하여 용강중에 취입하여 첨가하는 것을 특징으로 하는 저융점 금속의 첨가방법.
    조건 : x+y+z+m=1
    5.5x+3.3y+z+m5.0
    0〈x〈1
    0y〈1
    0z0.30
    0m〈0.25
    0.1z+m0.30
    (단, x는 저융점금속, y는 저융점금속의 산화물, z는 생석회, m는 탄소물질로서, 각각 중량 비율을 나타냄)
  2. 제1항에 있어서, 저융점금속이 납으로, 저융점금속과 생석회와의 혼합비율이 납 : 생석회=3 : 1내지 5 : 1의 범위내로 혼합하여 첨가하는 것을 특징으로 하는 저융점금속의 첨가방법.
  3. 제1항 또는 제2항에 있어서, 저융점금속 및 그밖의 물질을 기체와 함께 인잭션랜스에 의하여 용강중에 첨가하는 경우로서, 취입되는 기체에 따라 주어지는 용강의 단위교반력 ε가 하기의 조건을 만족하는 범위인 것을 특징으로 하는 저융점금속의 첨가방법.
    조건 :
    단
    : 취입가스에 의한 교반력(watt/t-s)
    R : 저융점금속 첨가속도
    Q : 교반용 가스량
    T : 용강온도(K)
    Wg : 용강량(ton)
    Z : 가스취입위치의 용강깊이(cm)
    M : 저융점금속 첨가합계량(Kg)
    t : 첨가시간(min)
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019860001087A 1985-02-18 1986-02-17 저융점 금속의 첨가방법 KR900006686B1 (ko)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP29895 1985-02-18
JP29895/85 1985-02-18
JP60029896A JPS61199050A (ja) 1985-02-18 1985-02-18 鉛含有溶鋼の溶製方法
JP60029895A JPS61199049A (ja) 1985-02-18 1985-02-18 鉛含有物質の添加方法
JP29896/85 1985-02-18
JP29896 1985-02-18
JP60082538A JPS61243113A (ja) 1985-04-19 1985-04-19 低融点金属と炭素物質の混合添加方法
JP82538/85 1985-04-19
JP95898/85 1985-05-08
JP60095898A JPS61257414A (ja) 1985-05-08 1985-05-08 鉛含有物質の添加方法

Publications (2)

Publication Number Publication Date
KR860006555A true KR860006555A (ko) 1986-09-13
KR900006686B1 KR900006686B1 (ko) 1990-09-17

Family

ID=27459139

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860001087A KR900006686B1 (ko) 1985-02-18 1986-02-17 저융점 금속의 첨가방법

Country Status (9)

Country Link
US (1) US4686081A (ko)
EP (1) EP0192240B1 (ko)
KR (1) KR900006686B1 (ko)
AU (1) AU562810B2 (ko)
BR (1) BR8600660A (ko)
CA (1) CA1281551C (ko)
DE (2) DE3664926D1 (ko)
ES (1) ES8701237A1 (ko)
MX (1) MX169867B (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4666515A (en) * 1986-05-15 1987-05-19 Inland Steel Company Method for adding bismuth to steel in a ladle
US7147823B2 (en) * 2002-04-15 2006-12-12 Battelle Energy Alliance, Llc High temperature cooling system and method
JP5329937B2 (ja) * 2008-12-16 2013-10-30 Ｊｆｅ条鋼株式会社 面粗さに優れた表面疵の少ない低炭素硫黄快削鋼
KR102517013B1 (ko) * 2018-12-07 2023-04-04 닛폰세이테츠 가부시키가이샤 가탄재 및 그것을 사용한 가탄 방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1099997A (fr) * 1954-02-17 1955-09-14 Procédés pour obtenir une amélioration des vitesses de coupe, de la résistance à l'usure et du coefficient de frottement des alliages ferreux et non ferreux
AT317274B (de) * 1970-12-28 1974-08-26 Steirische Gussstahlwerke Verfahren zur Herstellung bleihaltiger Stähle
US3998625A (en) * 1975-11-12 1976-12-21 Jones & Laughlin Steel Corporation Desulfurization method
GB2118209B (en) * 1982-02-12 1986-06-04 Showa Denko Kk Refining agent of molten metal and methods for producing the same
US4462823A (en) * 1982-12-11 1984-07-31 Foseco International Limited Treatment agents for molten steel

Also Published As

Publication number Publication date
DE3664926D1 (en) 1989-09-14
EP0192240B1 (en) 1989-08-09
US4686081A (en) 1987-08-11
ES8701237A1 (es) 1986-12-01
AU562810B2 (en) 1987-06-18
AU5368386A (en) 1986-09-04
BR8600660A (pt) 1986-10-29
MX169867B (es) 1993-07-29
KR900006686B1 (ko) 1990-09-17
EP0192240A1 (en) 1986-08-27
ES552064A0 (es) 1986-12-01
DE192240T1 (de) 1987-04-30
CA1281551C (en) 1991-03-19

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