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EP0626467A4 - Method of continuously carburizing metal strip. - Google Patents

Method of continuously carburizing metal strip.

Info

Publication number
EP0626467A4
EP0626467A4 EP93922640A EP93922640A EP0626467A4 EP 0626467 A4 EP0626467 A4 EP 0626467A4 EP 93922640 A EP93922640 A EP 93922640A EP 93922640 A EP93922640 A EP 93922640A EP 0626467 A4 EP0626467 A4 EP 0626467A4
Authority
EP
European Patent Office
Prior art keywords
carburization
rate
strip
correcting
atmospheric gas
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.)
Granted
Application number
EP93922640A
Other languages
German (de)
French (fr)
Other versions
EP0626467A1 (en
EP0626467B1 (en
Inventor
Tsuguhiko Mizushima I Nakagawa
Koushi Mizushima Iron Kuramoto
Nobuaki Mizushima Iro Hanazono
Jun Mizushima Iron Wo Morozumi
Susumu Technical Res Div Satoh
Susumu Technical Researc Okada
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Publication of EP0626467A1 publication Critical patent/EP0626467A1/en
Publication of EP0626467A4 publication Critical patent/EP0626467A4/en
Application granted granted Critical
Publication of EP0626467B1 publication Critical patent/EP0626467B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

This invention aims at providing a method of continuously carburizing a metal strip, which is capable of providing industrially optimum carburization conditions while attaining non-soot-generating atmospheric data, desired carburization concentration distribution and desired carburization rate, in a case where a strip passed through a carburization furnace is carburized continuously in a surface reaction rate-determining region in which the carbon concentration in a superficial layer of the strip has not yet reached an equilibrium level with respect to the time. The method consist of carburization concentration distribution (S7), on the basis of the carburization conditions including given specification data for the steel plate, furnace temperature and composition of the atmospheric gas, outputting the concentration of the components of the atmospheric gas, feed and discharge rates and other carburization conditions when the set carburization rate and an actual carburization rate are equal (S8-S15), and correcting the set carburization rate when a difference between the set carburization rate and an actual carburization rate is large, and correcting the strip feed rate while correcting the composition of the atmospheric gas when a difference between the predetermined carburization rate and set carburization rate is large (S9).
EP93922640A 1992-10-15 1993-10-15 Method of continuously carburizing steel strip Expired - Lifetime EP0626467B1 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP27730592 1992-10-15
JP277305/92 1992-10-15
JP287523/92 1992-10-26
JP287524/92 1992-10-26
JP28752492 1992-10-26
JP28752392 1992-10-26
JP344472/92 1992-12-24
JP34447292 1992-12-24
PCT/JP1993/001486 WO1994009175A1 (en) 1992-10-15 1993-10-15 Method of continuously carburizing metal strip

Publications (3)

Publication Number Publication Date
EP0626467A1 EP0626467A1 (en) 1994-11-30
EP0626467A4 true EP0626467A4 (en) 1995-03-01
EP0626467B1 EP0626467B1 (en) 1997-05-21

Family

ID=27479120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93922640A Expired - Lifetime EP0626467B1 (en) 1992-10-15 1993-10-15 Method of continuously carburizing steel strip

Country Status (5)

Country Link
EP (1) EP0626467B1 (en)
KR (1) KR100266037B1 (en)
CA (1) CA2125785A1 (en)
DE (1) DE69310897T2 (en)
WO (1) WO1994009175A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT404029B (en) * 1996-09-16 1998-07-27 Ald Aichelin Ges M B H LOW-PRESSURE REARING PLANT
BE1011178A3 (en) * 1997-05-27 1999-06-01 Metallurigiques Ct Voor Resear Method of making continuous strip steel stamping having improved surface properties.
AU782517B2 (en) 1999-10-29 2005-08-04 Basf Aktiengesellschaft L-pantolactone-hydrolase and a method for producing D-pantolactone
DE10325795B4 (en) * 2003-06-05 2005-07-28 Thyssenkrupp Stahl Ag Method for producing carburized steel strips
DE102005030433B3 (en) * 2005-06-30 2006-12-07 Ab Skf Carburizing an iron material, especially steel, comprises performing carburization on the basis of a calculated carbon diffusion coefficient
KR101166919B1 (en) * 2010-02-08 2012-07-23 한국생산기술연구원 Real time monitoring method for carburizing depth
DE102010039941B4 (en) * 2010-08-30 2012-05-16 Aktiebolaget Skf Process for carburizing an iron material
KR102094791B1 (en) * 2018-12-20 2020-03-30 (주)비전테크놀러지 Shield core of Sterling angle sensor for vehicle and method of manufacturing the same
RU2723397C1 (en) * 2020-02-13 2020-06-11 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" Cementing method
WO2024090229A1 (en) * 2022-10-27 2024-05-02 山陽特殊製鋼株式会社 Carbon concentration distribution analysis method
JP7595701B2 (en) * 2022-10-27 2024-12-06 山陽特殊製鋼株式会社 Carbon concentration distribution analysis method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934145A1 (en) * 1969-07-05 1971-01-21 Hartmann & Braun Ag Determination of carbon potential in the - carburisation of steel
DE1942281A1 (en) * 1969-08-20 1971-03-04 Hartmann & Braun Ag Gas carburisation of steel
DE2152440A1 (en) * 1971-10-21 1972-10-26 Bbc Brown Boveri & Cie Soot free steel carburizing system - with automatic control of carbon potential of gas and soot threshold
DE2152439A1 (en) * 1971-10-21 1972-10-26 Bbc Brown Boveri & Cie Soot formation prevention system for gas carburizing - chambers - by process control to simulated saturation line
US3950192A (en) * 1974-10-30 1976-04-13 Monsanto Company Continuous carburizing method
DE2835444A1 (en) * 1978-08-12 1980-02-28 Bbc Brown Boveri & Cie Carburising atmosphere control in heat treatment furnaces - using measurement of temperature and oxygen level to determine carbon potential of atmosphere
DE3139622A1 (en) * 1981-10-06 1983-04-21 Joachim Dr.-Ing. 7250 Leonberg Wünning Process for the gas-carburisation of steel
US4950334A (en) * 1986-08-12 1990-08-21 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Gas carburizing method and apparatus
JPH04107256A (en) * 1990-08-28 1992-04-08 Nippon Seiko Kk Carburizing furnace

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144469A (en) * 1982-02-22 1983-08-27 Aisin Seiki Co Ltd Program control apparatus of carburization furnace
JP3021458B2 (en) * 1987-12-28 2000-03-15 同和鉱業株式会社 Gas carburizing heat treatment method
JP2954339B2 (en) * 1990-11-30 1999-09-27 川崎製鉄株式会社 Continuous annealing furnace
JPH04198462A (en) * 1990-11-28 1992-07-17 Komatsu Ltd Carburizing device
JPH04202648A (en) * 1990-11-30 1992-07-23 Kawasaki Steel Corp Supplying method for carbonizable atmospheric gas in continuous carburization furnace

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934145A1 (en) * 1969-07-05 1971-01-21 Hartmann & Braun Ag Determination of carbon potential in the - carburisation of steel
DE1942281A1 (en) * 1969-08-20 1971-03-04 Hartmann & Braun Ag Gas carburisation of steel
DE2152440A1 (en) * 1971-10-21 1972-10-26 Bbc Brown Boveri & Cie Soot free steel carburizing system - with automatic control of carbon potential of gas and soot threshold
DE2152439A1 (en) * 1971-10-21 1972-10-26 Bbc Brown Boveri & Cie Soot formation prevention system for gas carburizing - chambers - by process control to simulated saturation line
US3950192A (en) * 1974-10-30 1976-04-13 Monsanto Company Continuous carburizing method
DE2835444A1 (en) * 1978-08-12 1980-02-28 Bbc Brown Boveri & Cie Carburising atmosphere control in heat treatment furnaces - using measurement of temperature and oxygen level to determine carbon potential of atmosphere
DE3139622A1 (en) * 1981-10-06 1983-04-21 Joachim Dr.-Ing. 7250 Leonberg Wünning Process for the gas-carburisation of steel
US4950334A (en) * 1986-08-12 1990-08-21 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Gas carburizing method and apparatus
JPH04107256A (en) * 1990-08-28 1992-04-08 Nippon Seiko Kk Carburizing furnace

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 16, no. 351 (C - 0968) 29 July 1992 (1992-07-29) *
See also references of WO9409175A1 *

Also Published As

Publication number Publication date
EP0626467A1 (en) 1994-11-30
CA2125785A1 (en) 1994-04-28
DE69310897D1 (en) 1997-06-26
WO1994009175A1 (en) 1994-04-28
EP0626467B1 (en) 1997-05-21
KR100266037B1 (en) 2000-09-15
DE69310897T2 (en) 1998-01-08

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