WO2004022791A1 - Procede de production de fer ductile - Google Patents

Procede de production de fer ductile Download PDF

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Publication number
WO2004022791A1
WO2004022791A1 PCT/NO2002/000319 NO0200319W WO2004022791A1 WO 2004022791 A1 WO2004022791 A1 WO 2004022791A1 NO 0200319 W NO0200319 W NO 0200319W WO 2004022791 A1 WO2004022791 A1 WO 2004022791A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
iron
ladle
nodularizing
magnesium
Prior art date
Application number
PCT/NO2002/000319
Other languages
English (en)
Inventor
Torbjørn SKALAND
Original Assignee
Elkem Asa
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
Application filed by Elkem Asa filed Critical Elkem Asa
Priority to AU2002326215A priority Critical patent/AU2002326215A1/en
Publication of WO2004022791A1 publication Critical patent/WO2004022791A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/08—Making cast-iron alloys
    • C22C33/10—Making cast-iron alloys including procedures for adding magnesium
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/10—Making spheroidal graphite cast-iron
    • C21C1/105—Nodularising additive agents
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/04—Cast-iron alloys containing spheroidal graphite
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/10—Cast-iron alloys containing aluminium or silicon
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D5/00—Heat treatments of cast-iron

Definitions

  • chill is quantified by measuring "chill dept" and the power of a nodularizer or inoculant to prevent chill and reduce chill depth is a convenient way in which to measure and compare the power of nodularizers and inoculants.
  • the power of nodularizers and inoculants is also commonly measured by the number density per unit area of spheroidal graphite particles in the as-cast microstructure. A higher number density per unit area of graphite spheroids means that the power of nodularizing and inoculation has been improved.
  • the nodularizing process is carried out in two basically different ways.
  • ladle treatment method the nodularizer alloy is placed in the bottom of the ladle whereafter liquid cast iron is filled into the ladle on the top of the nodularizer alloy.
  • the ladle treatment method is known as overpour, sandwich, or tundish cover treatment methods.
  • the inoculation is normally carried out after the nodularizing process is done, by adding inoculant to the metal stream during transfer of the cast iron to a pouring vessel or to a mould.
  • Table 1 shows the chemical composition of magnesium ferrosilicon alloys compared in this test, and Table 2 gives the chemical composition of the produced ductile iron castings. iron.

Abstract

La présente invention porte sur un procédé visant à nodulariser le traitement du fer ductile à l'aide d'une méthode de traitement par poche de coulée de façon à nodulariser un alliage magnésium-ferrosilicium. L'alliage nodularisant le magnésium-ferrosilicium comprend essentiellement 40 à 80 % en poids de silicium, 2 à 15 % en poids de magnésium, 0,3 à 5 % en poids de lanthanum, 0 à 6 % en poids de calcium, 0 à 5 % en poids d'aluminium, le reste étant du fer, et est ajouté à la poche de coulée, le fer fondu étant ensuite envoyé dans la poche de coulée.
PCT/NO2002/000319 2002-09-03 2002-09-12 Procede de production de fer ductile WO2004022791A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002326215A AU2002326215A1 (en) 2002-09-03 2002-09-12 Method for production of ductile iron

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20024185A NO20024185D0 (no) 2002-09-03 2002-09-03 Fremgangsmåte for å fremstille duktilt jern
NO20024185 2002-09-03

Publications (1)

Publication Number Publication Date
WO2004022791A1 true WO2004022791A1 (fr) 2004-03-18

Family

ID=19913958

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2002/000319 WO2004022791A1 (fr) 2002-09-03 2002-09-12 Procede de production de fer ductile

Country Status (4)

Country Link
US (1) US20040042925A1 (fr)
AU (1) AU2002326215A1 (fr)
NO (1) NO20024185D0 (fr)
WO (1) WO2004022791A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008076497A1 (fr) * 2006-12-15 2008-06-26 The Dexter Company Fer ductile carbidique brut de coulée
CN103331439A (zh) * 2013-07-09 2013-10-02 曲沃县民政福利企业有限公司 翻转式球化包盖

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20045611D0 (no) * 2004-12-23 2004-12-23 Elkem Materials Modifying agents for cast iron
JP4974591B2 (ja) * 2005-12-07 2012-07-11 旭テック株式会社 黒鉛球状化剤およびこれを用いた球状黒鉛鋳鉄の製造方法
KR101125371B1 (ko) * 2009-09-09 2012-03-27 현대자동차주식회사 ＣＧＩ 주철의 Ｍｇ 접종 방법과 이를 이용하여 제조된 실린더 블록 및 실린더 헤드
CN102021468B (zh) * 2010-10-25 2013-01-23 天津市万路科技有限公司 无烟球化处理方法
KR102060468B1 (ko) 2013-03-08 2019-12-30 엘지전자 주식회사 베인 펌프
KR20140110621A (ko) * 2013-03-08 2014-09-17 엘지전자 주식회사 선회 또는 고정스크롤용 cv 흑연주철 및 그를 이용한 선회 또는 고정스크롤의 제조방법
SI3510394T1 (sl) 2016-09-12 2022-02-28 Snam Alloys Pvt Ltd, R&D Unit Nemagnezijev postopek za proizvodnjo kompaktiranega grafitnega železa (CGI)
CN115125433A (zh) * 2022-06-27 2022-09-30 江苏天奇重工股份有限公司 一种高韧性铁素体球墨铸铁及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1223694A (en) * 1967-12-07 1971-03-03 Foseco Int Inoculation of grey cast iron
US4290805A (en) * 1978-04-06 1981-09-22 Compagnie Universelle D'acetylene Et D'electro-Metallurgie Method for obtaining iron-based alloys allowing in particular their mechanical properties to be improved by the use of lanthanum, and iron-based alloys obtained by the said method
US4385030A (en) * 1982-04-21 1983-05-24 Foote Mineral Company Magnesium ferrosilicon alloy and use thereof in manufacture of modular cast iron

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3404607A1 (de) * 1983-07-06 1985-01-17 Metallgesellschaft Ag, 6000 Frankfurt Behandlungsmittel fuer gusseisenschmelzen und verfahren zu seiner herstellung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1223694A (en) * 1967-12-07 1971-03-03 Foseco Int Inoculation of grey cast iron
US4290805A (en) * 1978-04-06 1981-09-22 Compagnie Universelle D'acetylene Et D'electro-Metallurgie Method for obtaining iron-based alloys allowing in particular their mechanical properties to be improved by the use of lanthanum, and iron-based alloys obtained by the said method
US4385030A (en) * 1982-04-21 1983-05-24 Foote Mineral Company Magnesium ferrosilicon alloy and use thereof in manufacture of modular cast iron

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008076497A1 (fr) * 2006-12-15 2008-06-26 The Dexter Company Fer ductile carbidique brut de coulée
CN103331439A (zh) * 2013-07-09 2013-10-02 曲沃县民政福利企业有限公司 翻转式球化包盖

Also Published As

Publication number Publication date
NO20024185D0 (no) 2002-09-03
AU2002326215A1 (en) 2004-03-29
US20040042925A1 (en) 2004-03-04

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