EP0171107A1 - Procédé pour préparer un corps formé d'éléments solubles dans l'acier liquide - Google Patents

Procédé pour préparer un corps formé d'éléments solubles dans l'acier liquide Download PDF

Info

Publication number
EP0171107A1
EP0171107A1 EP85201131A EP85201131A EP0171107A1 EP 0171107 A1 EP0171107 A1 EP 0171107A1 EP 85201131 A EP85201131 A EP 85201131A EP 85201131 A EP85201131 A EP 85201131A EP 0171107 A1 EP0171107 A1 EP 0171107A1
Authority
EP
European Patent Office
Prior art keywords
molten
steel
mould
elements
manufacturing
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP85201131A
Other languages
German (de)
English (en)
Inventor
Eduard Papen
Herman Raes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
"National Forge Europe"
Original Assignee
"National Forge Europe"
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 "National Forge Europe" filed Critical "National Forge Europe"
Publication of EP0171107A1 publication Critical patent/EP0171107A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • C21C7/064—Dephosphorising; Desulfurising
    • C21C7/0645—Agents used for dephosphorising or desulfurising

Definitions

  • This invention relates to a method for manufacturing by compressing, a body which is comprised of granule- or powder-like elements which are soluble in a molten-steel bath, which elements are formed by active materials which are lighter than steel and are volatile in the molten-steel bath, such as notably calcium or magnesium, and inert materials, such as iron or nickel powder.
  • U.S.Patent 4,233,064 discloses a series proposals which are made to avoid that components compressed into briquettes or similar shaped parts would rapidly rise to the bath surface where they cause explosions and sparks, and generate a substantial amount smoke.
  • the body to be dipped has to have a very strong homogeneity and a very high uniformity in the compactness of the components thereof.
  • the required decomposition of the body in the molten bath will be opposed and that there will precisely appear the disturbing phenomenoms which it is desired to avoid with the dipping of said cylinder-shaped body in the molten bath.
  • the pertaining body should not only be produced under a very high pressure, as already mentioned at the start, but also the homogeneity of the inner structure thereof should be faultless.
  • said body is pressed inside a distortable mould.
  • a mould comprised of a plastic bag.
  • the body which is to be dipped into a molten-steel bath is comprised of a compressed mixture comprising a first material or material group with a limited solubility in the steel, and a second material or material mixture which is inactive in the steel, and may for example be iron or nickel.
  • Such a distortable mould may be comprised of an elastomer cylinder, but a cylinder from light distortable metal or plastic bags or sleeves also show best results.
  • the very high pressures which the isostatic press can generate but mostly the fact that the pressure can be generated in every direction, allows to produce shaped parts with the required compactness and homogeneity.
  • a detail of importance of the invention lies in the pressing of said bodies being made by using preferably oil instead of water-like or glycol-containing liquids.
  • Oil with a low viscosity under high pressure is to be preferred.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Press Drives And Press Lines (AREA)
  • Powder Metallurgy (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
EP85201131A 1984-07-31 1985-07-09 Procédé pour préparer un corps formé d'éléments solubles dans l'acier liquide Withdrawn EP0171107A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/213425A BE900271A (nl) 1984-07-31 1984-07-31 Werkwijze voor het vervaardigen van een lichaam bestaande uit in gesmolten staal oplosbare elementen.
BE213425 1984-07-31

Publications (1)

Publication Number Publication Date
EP0171107A1 true EP0171107A1 (fr) 1986-02-12

Family

ID=3843786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201131A Withdrawn EP0171107A1 (fr) 1984-07-31 1985-07-09 Procédé pour préparer un corps formé d'éléments solubles dans l'acier liquide

Country Status (3)

Country Link
EP (1) EP0171107A1 (fr)
JP (1) JPS6141716A (fr)
BE (1) BE900271A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101875112B (zh) * 2009-04-29 2013-06-26 方克明 微米纳米冶金添加剂

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA06014556A (es) * 2004-06-12 2007-06-05 Iron Mount Corp Metodo y aparato para llevar a cabo un proceso metalurgico.
CN109342478A (zh) * 2018-11-28 2019-02-15 南京钢铁股份有限公司 一种快速制作炉渣压片的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314787A (en) * 1966-03-29 1967-04-18 Int Nickel Co Method for producing an mg addition agent
DE1302000B (de) * 1968-03-21 1969-09-25 Elektrometallurgie Gmbh Brikett zum Einbringen von Magnesium in metallische Schmelzen
DE2038739B1 (de) * 1970-08-04 1971-10-07 Teledyne Ind Verfahren und Vorrichtung zum isostatischen Verdichten von Metallteilchen in feste Form
US4233064A (en) * 1978-09-13 1980-11-11 Dunn Jr Edward J Method of scavenging steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314787A (en) * 1966-03-29 1967-04-18 Int Nickel Co Method for producing an mg addition agent
DE1302000B (de) * 1968-03-21 1969-09-25 Elektrometallurgie Gmbh Brikett zum Einbringen von Magnesium in metallische Schmelzen
DE2038739B1 (de) * 1970-08-04 1971-10-07 Teledyne Ind Verfahren und Vorrichtung zum isostatischen Verdichten von Metallteilchen in feste Form
US4233064A (en) * 1978-09-13 1980-11-11 Dunn Jr Edward J Method of scavenging steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101875112B (zh) * 2009-04-29 2013-06-26 方克明 微米纳米冶金添加剂

Also Published As

Publication number Publication date
JPS6141716A (ja) 1986-02-28
BE900271A (nl) 1985-01-31

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18D Application deemed to be withdrawn

Effective date: 19880726

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Inventor name: RAES, HERMAN

Inventor name: PAPEN, EDUARD