US20030189276A1 - Dual-purpose installation for continuous annealing and hot dip plating - Google Patents

Dual-purpose installation for continuous annealing and hot dip plating Download PDF

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Publication number
US20030189276A1
US20030189276A1 US10/380,609 US38060903A US2003189276A1 US 20030189276 A1 US20030189276 A1 US 20030189276A1 US 38060903 A US38060903 A US 38060903A US 2003189276 A1 US2003189276 A1 US 2003189276A1
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US
United States
Prior art keywords
facility
continuous annealing
steel sheet
hot dip
dual
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.)
Abandoned
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US10/380,609
Inventor
Masanori Hoshino
Kouichi Terahara
Motofumi Takemura
Nobuyoshi Okada
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Nippon Steel Corp
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Individual
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Filing date
Publication date
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Assigned to NIPPON STEEL CORPORATION reassignment NIPPON STEEL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HOSHINO, MASANORI, OKADA, NOBUYOSHI, TAKEMURA, MOTOFUMI, TERAHARA, KOUICHI
Publication of US20030189276A1 publication Critical patent/US20030189276A1/en
Abandoned legal-status Critical Current

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    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/562—Details
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling

Definitions

  • the present invention relates to a dual-purpose installation for continuous annealing and hot dip plating to produce a continuously annealed steel sheet as well as a hot dip plated steel sheet by switching process routes in the single installation.
  • Japanese Unexamined Patent Publication No. S55-6469 discloses a dual-purpose installation used for a hot dip plating line and a continuous annealing line, wherein a steel sheet coming out from a continuous annealing furnace is cooled in the normal atmosphere without being dipped into a plating pot when producing a continuously annealed steel sheet.
  • a steel sheet just coming out from a continuous annealing furnace has a high temperature, there is a problem in that the surfaces of the steel sheet will become oxidized if no countermeasures are taken.
  • An idea has been proposed of installing a pickling apparatus for removing the oxide films on the surfaces. However, this requires additional equipment investment, the necessity of newly installing a waste liquor treatment facility and increased operational loads.
  • Japanese Patent Application No. H11-5298 discloses an apparatus to sufficiently lower the temperature of a steel sheet at the exit from a continuous annealing furnace so as to prevent the steel sheet from oxidizing when it comes out from the continuous annealing furnace and is exposed to the outside atmosphere.
  • cooling a steel sheet to a temperature where it does not become oxidized when exposed to the normal atmosphere requires a larger cooling apparatus in the continuous annealing furnace and resultant increased equipment investment.
  • the present invention proposes measures to solve the above problems and make a dual-purpose installation for continuous annealing and hot dip plating or hot dip galvanizing to produce a steel sheet without incurring a large increase in equipment costs.
  • a dual-purpose installation for continuous annealing and hot dip plating wherein at least a continuous annealing furnace, a coating pot, a coating facility and a water quenching facility are arranged in the form of a processing line along the travelling direction of a steel sheet, characterized by having a bypass facility enabling a steel sheet to be led from the continuous annealing furnace directly to the water quenching facility without being exposed to the outside atmosphere and the interior of the bypass facility being kept filled with a non-oxidizing atmosphere.
  • FIG. 1 is a schematic illustration showing a dual-purpose installation for continuous annealing and hot dip plating to which the present invention is applied.
  • FIG. 1 is a schematic illustration of the annealing furnace portion of a dual-purpose installation for continuous annealing and hot dip plating or hot dip galvanizing to which the present invention is applied.
  • a steel sheet 1 is annealed in a continuous annealing furnace 2 .
  • the steel sheet 1 is fed to a coating pot 3 and plated after going through the continuous annealing furnace 2 as shown by dotted lines.
  • the coating weight is controlled by a coating facility 4
  • the steel sheet is subjected to alloying treatment in an alloying furnace 5 , as required, cooled by steel sheet cooling units 6 , and then cooled further to near room temperature in a water quenching facility 7 .
  • the above sequence of process steps is exactly the same as the normal process sequence for producing a hot dip plated or hot dip galvanized product.
  • the steel sheet 1 When producing a continuously annealed steel sheet, the steel sheet 1 has to be cooled to near room temperature by the water quenching facility 7 , without going through the coating pot 3 , the coating facility 4 , the alloying furnace 5 and the cooling units 6 . However, if the steel sheet 1 is exposed to the outside atmosphere after going through the continuous annealing furnace 2 , the surfaces of the steel sheet become oxidized. To avoid oxidization, a bypass facility 8 is installed in the present invention so that the steel sheet can travel from the continuous annealing furnace 2 directly to the water quenching facility 7 without being exposed to the outside atmosphere.
  • the steel sheet 1 can be transferred to the water quenching facility 7 and cooled without being oxidized. Further, by installing the coating pot 3 , the coating facility 4 and a crane 9 beneath the bypass facility 8 , it becomes possible to transport and repair the coating pot, the coating facility or the equipment in the coating pot during the production of a continuously annealed product, thus enhancing production efficiency.

Abstract

The present invention provides a dual-purpose installation for continuous annealing and hot dip plating to produce a continuously annealed steel sheet and a hot dip plated steel sheet by switching process routes in the single installation, and according to the present invention, by installing a bypass facility which leads a steel sheet from a continuous annealing furnace to a water quenching facility without it traveling through a plating pot and a plating facility in the a dual-purpose installation for continuous annealing and hot dip plating, it becomes possible to prevent the steel sheet coming out from the annealing furnace from being exposed to the outside atmosphere and being oxidized during the production of a continuously annealed product and to realize a less expensive dual-purpose installation for continuous annealing and hot dip plating.

Description

    TECHNICAL FIELD
  • The present invention relates to a dual-purpose installation for continuous annealing and hot dip plating to produce a continuously annealed steel sheet as well as a hot dip plated steel sheet by switching process routes in the single installation. [0001]
    • BACKGROUND ART
  • While a continuously annealed steel sheet and a hot dip plated steel sheet, especially a hot dip galvanized steel sheet, have so far been produced, in general practice, using different installations designed for the respective purposes, a dual-purpose installation for continuous annealing and hot dip plating or hot dip galvanizing to produce a continuously annealed steel sheet as well as a hot dip plated steel sheet in the single installation is proposed in Japanese Unexamined Patent Publication No. S55-6469 or Japanese Patent Application No. H11-5298. [0002]
  • Japanese Unexamined Patent Publication No. S55-6469 discloses a dual-purpose installation used for a hot dip plating line and a continuous annealing line, wherein a steel sheet coming out from a continuous annealing furnace is cooled in the normal atmosphere without being dipped into a plating pot when producing a continuously annealed steel sheet. However, since a steel sheet just coming out from a continuous annealing furnace has a high temperature, there is a problem in that the surfaces of the steel sheet will become oxidized if no countermeasures are taken. An idea has been proposed of installing a pickling apparatus for removing the oxide films on the surfaces. However, this requires additional equipment investment, the necessity of newly installing a waste liquor treatment facility and increased operational loads. [0003]
  • Japanese Patent Application No. H11-5298 discloses an apparatus to sufficiently lower the temperature of a steel sheet at the exit from a continuous annealing furnace so as to prevent the steel sheet from oxidizing when it comes out from the continuous annealing furnace and is exposed to the outside atmosphere. However, cooling a steel sheet to a temperature where it does not become oxidized when exposed to the normal atmosphere requires a larger cooling apparatus in the continuous annealing furnace and resultant increased equipment investment. [0004]
    • SUMMARY OF THE INVENTION
  • The present invention proposes measures to solve the above problems and make a dual-purpose installation for continuous annealing and hot dip plating or hot dip galvanizing to produce a steel sheet without incurring a large increase in equipment costs. [0005]
  • The gist of the present invention to solve the above problems is as follows: [0006]
  • (1) A dual-purpose installation for continuous annealing and hot dip plating wherein at least a continuous annealing furnace, a coating pot, a coating facility and a water quenching facility are arranged in the form of a processing line along the travelling direction of a steel sheet, characterized by having a bypass facility enabling a steel sheet to be led from the continuous annealing furnace directly to the water quenching facility without being exposed to the outside atmosphere and the interior of the bypass facility being kept filled with a non-oxidizing atmosphere. [0007]
  • (2) A dual-purpose installation for continuous annealing and hot dip plating characterized by having an alloying furnace, a steel sheet cooling unit, or both of them proceeding to a coating pot and a coating facility and being equipped with the bypass facility according to the item (1). [0008]
  • (3) A dual-purpose installation for continuous annealing and hot dip plating according to the item (1) or (2), enabling the coating facility and the equipment in the coating pot to be transported and repaired and the production efficiency to be improved by installing the coating pot, the coating facility and a crane beneath the bypass facility.[0009]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic illustration showing a dual-purpose installation for continuous annealing and hot dip plating to which the present invention is applied.[0010]
    • THE MOST PREFERRED EMBODIMENTS
  • The present invention is explained in detail hereafter based on an example. [0011]
  • FIG. 1 is a schematic illustration of the annealing furnace portion of a dual-purpose installation for continuous annealing and hot dip plating or hot dip galvanizing to which the present invention is applied. A steel sheet [0012] 1 is annealed in a continuous annealing furnace 2. When producing a plated or galvanized product, the steel sheet 1 is fed to a coating pot 3 and plated after going through the continuous annealing furnace 2 as shown by dotted lines. Then, after the coating weight is controlled by a coating facility 4, the steel sheet is subjected to alloying treatment in an alloying furnace 5, as required, cooled by steel sheet cooling units 6, and then cooled further to near room temperature in a water quenching facility 7. The above sequence of process steps is exactly the same as the normal process sequence for producing a hot dip plated or hot dip galvanized product.
  • When producing a continuously annealed steel sheet, the steel sheet [0013] 1 has to be cooled to near room temperature by the water quenching facility 7, without going through the coating pot 3, the coating facility 4, the alloying furnace 5 and the cooling units 6. However, if the steel sheet 1 is exposed to the outside atmosphere after going through the continuous annealing furnace 2, the surfaces of the steel sheet become oxidized. To avoid oxidization, a bypass facility 8 is installed in the present invention so that the steel sheet can travel from the continuous annealing furnace 2 directly to the water quenching facility 7 without being exposed to the outside atmosphere.
  • Since the interior of the [0014] bypass facility 8 is kept filled with a non-oxidizing atmosphere having, for example, a composition of 5 to 10% of H2 and 95 to 90% of N2, which is the same atmosphere as that in the continuous annealing furnace, the steel sheet 1 can be transferred to the water quenching facility 7 and cooled without being oxidized. Further, by installing the coating pot 3, the coating facility 4 and a crane 9 beneath the bypass facility 8, it becomes possible to transport and repair the coating pot, the coating facility or the equipment in the coating pot during the production of a continuously annealed product, thus enhancing production efficiency.
    • INDUSTRIAL AVAILABILITY
  • As explained above, by applying the present invention to a dual-purpose installation for continuous annealing, hot dip plating and hot dip galvanizing, it becomes possible to eliminate a pickling facility for removing oxide films on the surfaces of a steel sheet after annealing. Further, it is also possible to transport and repair a coating pot, a coating facility and the equipment in the coating pot using a crane during the production of a continuously annealed product, and thus enhance production efficiency. [0015]

Claims (3)

1. A dual-purpose installation for continuous annealing and hot dip plating wherein at least a continuous annealing furnace, a coating pot, a coating facility and a water quenching facility are arranged in the form of a processing line along the travelling direction of a steel sheet, characterized by having a bypass facility enabling a steel sheet to be led from the continuous annealing furnace directly to the water quenching facility without being exposed to the outside atmosphere and the interior of the bypass facility being kept filled with a non-oxidizing atmosphere.
2. A dual-purpose installation for continuous annealing and hot dip plating characterized by having an alloying furnace, a steel sheet cooling unit, or both of them proceeding to a coating pot and a coating facility and being equipped with the bypass facility according to claim 1.
3. A dual-purpose installation for continuous annealing and hot dip plating according to claim 1 or 2, enabling the coating facility and the equipment in the coating pot to be transported and repaired and the production efficiency to be enhanced by installing the coating pot, the coating facility and a crane beneath the bypass facility.
US10/380,609 2000-09-13 2001-09-13 Dual-purpose installation for continuous annealing and hot dip plating Abandoned US20030189276A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000278566A JP2002088414A (en) 2000-09-13 2000-09-13 Facility used for both of continuous annealing and hot dip metal coating
JP2000-228566 2000-09-13

Publications (1)

Publication Number Publication Date
US20030189276A1 true US20030189276A1 (en) 2003-10-09

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US (1) US20030189276A1 (en)
EP (1) EP1325163B1 (en)
JP (1) JP2002088414A (en)
KR (1) KR20030027107A (en)
CN (1) CN100357461C (en)
AU (2) AU8623401A (en)
BR (1) BR0113848B1 (en)
CA (1) CA2421925A1 (en)
DE (1) DE60133912D1 (en)
RU (1) RU2255138C2 (en)
TW (1) TW565620B (en)
WO (1) WO2002022894A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120180721A1 (en) * 2009-10-01 2012-07-19 Masanori Hoshino Dual-purpose facility of continuous hot-dip coating and continuous annealing
EP2103715A4 (en) * 2007-01-09 2017-01-04 Nippon Steel & Sumitomo Metal Corporation Process for producing high-strength cold rolled steel sheet excelling in chemical treatability and relevant production equipment
US20170218476A1 (en) * 2014-08-11 2017-08-03 Jfe Steel Corporation Steel-strip production apparatus
EP3403736A1 (en) * 2017-05-17 2018-11-21 Primetals Technologies Austria GmbH Guidance of metallic strips in a strip processing system
CN112095061A (en) * 2020-08-31 2020-12-18 广州Jfe钢板有限公司 Production switching production channel and switching method for two different steel plate products

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105339520B (en) * 2013-06-26 2017-11-17 杰富意钢铁株式会社 The molten zinc plating of steel plate and the dual-purpose processing equipment of continuous annealing
JP6451138B2 (en) * 2014-08-11 2019-01-16 Ｊｆｅスチール株式会社 Steel strip manufacturing method
FR3095452A1 (en) 2019-04-29 2020-10-30 Fives Stein Dual Purpose Metal Strip Continuous Processing Line
RU2769680C2 (en) * 2019-06-13 2022-04-05 Сергей Александрович Ненашев Device for manufacturing steel tape

Citations (3)

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Publication number Priority date Publication date Assignee Title
US4408561A (en) * 1981-08-24 1983-10-11 Nippon Steel Corporation Dual-purpose plant for producing cold rolled steel sheet and hot-dip galvanized steel sheet
US5127966A (en) * 1990-03-20 1992-07-07 Kawasaki Steel Corporation Method of producing hot-dip galvannealed steel sheet free of ti white-stripe defects
US5403468A (en) * 1991-03-13 1995-04-04 Kawasaki Steel Corporation Process for the manufacture of tinplate using a fused tin chloride electroplating bath

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JPS53132437A (en) * 1977-04-26 1978-11-18 Nippon Steel Corp Continuous treatment facilities for cold rolled steel band
GB2093486B (en) * 1981-02-24 1985-06-26 Kloeckner Werke Ag Plant for the continuous treatment of thin plate or strip
EP0072874B1 (en) * 1981-08-25 1985-05-29 Nippon Steel Corporation Dual-purpose plant for producing cold rolled steel sheet and hot-dip galvanized steel sheet
JPS5871366A (en) * 1981-10-22 1983-04-28 Nippon Steel Corp Combined manufacturing facility for cold rolled steel plate and zinc hot dipped steel plate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408561A (en) * 1981-08-24 1983-10-11 Nippon Steel Corporation Dual-purpose plant for producing cold rolled steel sheet and hot-dip galvanized steel sheet
US5127966A (en) * 1990-03-20 1992-07-07 Kawasaki Steel Corporation Method of producing hot-dip galvannealed steel sheet free of ti white-stripe defects
US5403468A (en) * 1991-03-13 1995-04-04 Kawasaki Steel Corporation Process for the manufacture of tinplate using a fused tin chloride electroplating bath

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2103715A4 (en) * 2007-01-09 2017-01-04 Nippon Steel & Sumitomo Metal Corporation Process for producing high-strength cold rolled steel sheet excelling in chemical treatability and relevant production equipment
EP3795716A1 (en) * 2007-01-09 2021-03-24 Nippon Steel Corporation Method of production and production facility of high strength cold rolled steel sheet excellent in chemical convertibility
US20120180721A1 (en) * 2009-10-01 2012-07-19 Masanori Hoshino Dual-purpose facility of continuous hot-dip coating and continuous annealing
US8714104B2 (en) * 2009-10-01 2014-05-06 Nippon Steel & Sumitomo Metal Corporation Dual-purpose facility of continuous hot-dip coating and continuous annealing
US9127339B2 (en) 2009-10-01 2015-09-08 Nippon Steel & Sumitomo Metal Corporation Dual-purpose facility of continuous hot-dip coating and continuous annealing
US20170218476A1 (en) * 2014-08-11 2017-08-03 Jfe Steel Corporation Steel-strip production apparatus
US10273557B2 (en) * 2014-08-11 2019-04-30 Jfe Steel Corporation Steel-strip production apparatus
EP3403736A1 (en) * 2017-05-17 2018-11-21 Primetals Technologies Austria GmbH Guidance of metallic strips in a strip processing system
WO2018210548A1 (en) * 2017-05-17 2018-11-22 Primetals Technologies Austria GmbH Guiding metal bands in a band processing system
CN110678274A (en) * 2017-05-17 2020-01-10 首要金属科技奥地利有限责任公司 Guiding of metal strip in strip processing plant
CN112095061A (en) * 2020-08-31 2020-12-18 广州Jfe钢板有限公司 Production switching production channel and switching method for two different steel plate products

Also Published As

Publication number Publication date
CN100357461C (en) 2007-12-26
CA2421925A1 (en) 2002-03-21
DE60133912D1 (en) 2008-06-19
AU2001286234B2 (en) 2005-06-16
JP2002088414A (en) 2002-03-27
TW565620B (en) 2003-12-11
EP1325163A4 (en) 2005-02-16
CN1452667A (en) 2003-10-29
BR0113848B1 (en) 2011-07-12
RU2255138C2 (en) 2005-06-27
KR20030027107A (en) 2003-04-03
BR0113848A (en) 2003-06-03
EP1325163A1 (en) 2003-07-09
AU8623401A (en) 2002-03-26
EP1325163B1 (en) 2008-05-07
WO2002022894A1 (en) 2002-03-21

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AS Assignment

Owner name: NIPPON STEEL CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOSHINO, MASANORI;TERAHARA, KOUICHI;TAKEMURA, MOTOFUMI;AND OTHERS;REEL/FRAME:014161/0542

Effective date: 20030210

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION