EP0909832A1 - Verfahren zum Einstellen der Zusammensetzung eines metallischen Erzeugnisses - Google Patents

Verfahren zum Einstellen der Zusammensetzung eines metallischen Erzeugnisses Download PDF

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Publication number
EP0909832A1
EP0909832A1 EP97203241A EP97203241A EP0909832A1 EP 0909832 A1 EP0909832 A1 EP 0909832A1 EP 97203241 A EP97203241 A EP 97203241A EP 97203241 A EP97203241 A EP 97203241A EP 0909832 A1 EP0909832 A1 EP 0909832A1
Authority
EP
European Patent Office
Prior art keywords
substance
strip
composition
sheet
vacuum chamber
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Withdrawn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
EP97203241A
Other languages
English (en)
French (fr)
Inventor
Pierre Van Den Brande
Alain Weymeersch
Fabrizio Maseri
Philippe Harlet
Lucien Renard
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.)
ArcelorMittal Liege Upstream SA
Original Assignee
Cockerill Sambre SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8228838&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0909832(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cockerill Sambre SA filed Critical Cockerill Sambre SA
Priority to EP97203241A priority Critical patent/EP0909832A1/de
Priority to DK98948630.3T priority patent/DK1025275T4/da
Priority to ES98948630T priority patent/ES2210827T5/es
Priority to PCT/BE1998/000154 priority patent/WO1999020808A1/fr
Priority to EP98948630A priority patent/EP1025275B2/de
Priority to JP2000517123A priority patent/JP4050461B2/ja
Priority to AT98948630T priority patent/ATE253650T1/de
Priority to AU95248/98A priority patent/AU9524898A/en
Priority to US09/529,604 priority patent/US6361628B1/en
Priority to DE69819552T priority patent/DE69819552T3/de
Priority to PT98948630T priority patent/PT1025275E/pt
Publication of EP0909832A1 publication Critical patent/EP0909832A1/de
Withdrawn legal-status Critical Current

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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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • 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

Definitions

  • the present invention relates to a method for the composition of a metal product by the addition of at least one substance to this product.
  • composition of a steel is always isotropic since the composition is carried out in the liquid phase of the metal. It is therefore impossible to produce "composite" steels at heart ductile and hard skin.
  • the method proposed according to the invention provides a solution to these different problems.
  • the composition steels after the solidification step allows working with standard compositions of very large volume at the steelworks, which allows to eliminate special casting and therefore to decrease strongly downgrading issues. It is even possible to produce very low tonnages of special steels.
  • a method is proposed which allows the composition of steels or other metals after solidification.
  • the crystallization of a very low carbon steel followed by its composition is possible. This way of proceeding allows an improvement in mechanical properties compared to the case where the crystallization is obtained in the final composition.
  • the process according to the invention is characterized by the fact that we use a metallic product in the form a continuous strip which is moved into a vacuum chamber, that we apply the substance on this tape and we broadcast this substance at least partially in the strip at the time it goes into the vacuum chamber keeping it at a temperature lower than its melting temperature, but high enough to allow this broadcast.
  • the strip is preheated before the incorporation of the aforementioned substance.
  • the contribution of the aforementioned substance in the strip is produced by sputtering technique, by vacuum evaporation technique, by arc deposition, by decomposition of a gas carrying this substance in a plasma or by a combination of two or more of these techniques.
  • the invention relates to a process allowing the modification of the chemical composition of a metal in the solid state according to which use is made of a metal product in the form of a continuous strip that the one moves to the parade in a vacuum chamber, in which prevails for example a total gas pressure of 10 -4 to 100 Torr and in which one optionally creates a plasma, facing one or both of its faces, so as to introducing into said strip, for example by bombardment and / or diffusion, a determined substance present in this chamber.
  • This strip is heated and kept at a temperature high enough to allow at least the partial diffusion of this substance in the strip. This temperature is, however, lower than the melting temperature of the material from which the strip is made.
  • the strip can, for example, be a strip of mild steel, stainless steel or aluminum.
  • the strip is preferably maintained at a temperature of the order of 600 to 1200 ° C., while in the case of aluminum, this temperature is generally of the order of 200 ° to 600 ° C.
  • we preheat advantageously the strip and the above-mentioned substance is incorporated before or after an annealing step by means of discharges formed by example by plasma.
  • the attached figure shows an annealing installation in which the composition according to the invention can be carried out a metal strip, which is preferably made of a sheet of steel, moving substantially continuously through a vacuum chamber 2 of this installation in which the annealing by plasma discharges.
  • the discharges are established between sheet 1, during its passage through a first zone 10 of this chamber 2, and a counter electrode 3 in such a way as to dissipate electrical power from the discharges in this sheet 1 and thus therefore to create the annealing.
  • the plasma can be created in direct current, the sheet forming then the cathode, or alternating current.
  • a counter electrode 3 extending into the vacuum or annealing chamber 2, facing the sheet 1, and having a surface directed towards the sheet, the surface of which is greater than that of the part of the sheet facing it, in order to maintain a negative self-polarization of the latter.
  • the discharge can possibly be carried out in presence of magnetic induction fields thanks to the presence of lovers 5 near the sheet 1 and on the opposite side of it by compared to the counter electrode 3.
  • the power densities dissipated per face on the steel sheet 1 are typically between 1 W / cm 2 and 500 W / cm 2 , while the running speeds of this sheet are generally between 1 m / min and 1500 m / min.
  • the temperature rise takes place in the sheet metal area where power dissipation takes place, while the rate of rise in temperature depends on the adaptation of the power density used, line speed as well as the thickness of the sheet and its heat capacity.
  • a temperature stabilization in the annealing cycle can, for example example, be obtained by providing in the vacuum chamber 2 a area where the sheet runs freely under reduced pressure. It is enough, by example, in such a case, to provide a compartment 6, somewhat isolated from zone 10, where warming takes place through the creation of plasma.
  • a temperature stabilization in the annealing cycle.
  • This can, for example example, be obtained by providing in the vacuum chamber 2 a area where the sheet runs freely under reduced pressure. It is enough, by example, in such a case, to provide a compartment 6, somewhat isolated from zone 10, where warming takes place through the creation of plasma.
  • the losses thermal conduction in the gas are limited and losses by radiation can be returned to the sheet by means of reflectors or by additional radiant heating means, not shown.
  • the contribution of the aforementioned substance can be obtained in zone 10 by any deposit system under vacuum indicated schematically by reference 8, such as by sputtering by ions from a target not shown or evaporation under vacuum, by arc deposition, or more generally by any PVD deposition technique ("physical vapor deposition"), or by PECVD ("plasma enhanced chemical vapor deposition "), i.e. by decomposition of a gas carrier of the substance in question, which is, for example, injected into plasma, as shown schematically by arrows 9 on the figure.
  • the injection of the substance can be carried out in the holding zone 6 of the temperature in which one can possibly create a discharge.
  • the process according to the invention generally comprises a step of raising temperature obtained by the heat losses of the plasma 4 produced at the strip 1, a temperature maintenance step in compartment 6 where the strip 1 is arranged in an accordion.
  • Example 1 Composition of a support for tinplate.
  • the basic steel has the following composition: C: 0.035%; N: 0.0025%; Ti: 0%; Mn: 0.4%; B: 0%; Al: 0.04%.
  • the strip width is 1000 mm and its thickness is 0.2 mm.
  • the entry temperature of the heating zone 10 is 20 ° C. and that of entry from the zone 10 into the holding zone 6 is 800 ° C.
  • the temperature rise is carried out by a plasma over a length of sheet metal of 7 m with a consumed power of 10 MW.
  • a reactive mixture consisting of 90% nitrogen and 10% C 2 H 2 is injected into the discharge.
  • the decomposed gas is then entrained towards the temperature maintenance zone 6.
  • the total gas pressure is 0.02 Torr. After this step, constituting in fact a reactive annealing, the sheet is cooled and tinned.
  • the average final carbon and nitrogen composition of the sheet thus cooled is 0.06%.
  • Example 2 Composition of a boron steel.
  • a sheet of ULCTi ("Ultra Low Carbon Carbon Ti”) steel 1 mm thick is used, the composition of which is as follows: C: 0.003%; N: 0.0025%; Ti: 0.06%; Mn: 0.15%; B: 0%; Al: 0.04%.
  • This strip continuously enters the installation at a line speed of 200 m / min.
  • the strip width is 1000 mm.
  • Heating takes place over a strip length of 10 m and the applied power is 10 MW, so as to reach 800 ° C before entering compartment 6.
  • a deposit of boron is carried out on the surface of the sheet beforehand annealing by vacuum evaporation at a rate of 0.04 g / m 2 of boron per side.
  • the temperature holding zone corresponds to 200 m from length of the sheet.
  • the final boron composition of the sheet at the outlet of the installation is 0.001% and that of the other elements has remained unchanged.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Vapour Deposition (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
EP97203241A 1997-10-17 1997-10-17 Verfahren zum Einstellen der Zusammensetzung eines metallischen Erzeugnisses Withdrawn EP0909832A1 (de)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP97203241A EP0909832A1 (de) 1997-10-17 1997-10-17 Verfahren zum Einstellen der Zusammensetzung eines metallischen Erzeugnisses
PT98948630T PT1025275E (pt) 1997-10-17 1998-10-16 Processo para fabricar um produto metalico composito
EP98948630A EP1025275B2 (de) 1997-10-17 1998-10-16 Verfahren zum einstellen der zusammensetzung eines metallischen erzeugnisses
ES98948630T ES2210827T5 (es) 1997-10-17 1998-10-16 Método para la realización de un producto de metal compuesto.
PCT/BE1998/000154 WO1999020808A1 (fr) 1997-10-17 1998-10-16 Procede pour la mise a composition d'un produit metallique
DK98948630.3T DK1025275T4 (da) 1997-10-17 1998-10-16 Fremgangsmåde til at udføre en sammensætning af et metalprodukt
JP2000517123A JP4050461B2 (ja) 1997-10-17 1998-10-16 金属製品の複合的硬化
AT98948630T ATE253650T1 (de) 1997-10-17 1998-10-16 Verfahren zum einstellen der zusammensetzung eines metallischen erzeugnisses
AU95248/98A AU9524898A (en) 1997-10-17 1998-10-16 Method for making a composite metal product
US09/529,604 US6361628B1 (en) 1997-10-17 1998-10-16 Method for making a composite metal product
DE69819552T DE69819552T3 (de) 1997-10-17 1998-10-16 Verfahren zum einstellen der zusammensetzung eines metallischen erzeugnisses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97203241A EP0909832A1 (de) 1997-10-17 1997-10-17 Verfahren zum Einstellen der Zusammensetzung eines metallischen Erzeugnisses

Publications (1)

Publication Number Publication Date
EP0909832A1 true EP0909832A1 (de) 1999-04-21

Family

ID=8228838

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97203241A Withdrawn EP0909832A1 (de) 1997-10-17 1997-10-17 Verfahren zum Einstellen der Zusammensetzung eines metallischen Erzeugnisses
EP98948630A Expired - Lifetime EP1025275B2 (de) 1997-10-17 1998-10-16 Verfahren zum einstellen der zusammensetzung eines metallischen erzeugnisses

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP98948630A Expired - Lifetime EP1025275B2 (de) 1997-10-17 1998-10-16 Verfahren zum einstellen der zusammensetzung eines metallischen erzeugnisses

Country Status (10)

Country Link
US (1) US6361628B1 (de)
EP (2) EP0909832A1 (de)
JP (1) JP4050461B2 (de)
AT (1) ATE253650T1 (de)
AU (1) AU9524898A (de)
DE (1) DE69819552T3 (de)
DK (1) DK1025275T4 (de)
ES (1) ES2210827T5 (de)
PT (1) PT1025275E (de)
WO (1) WO1999020808A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010001223A1 (en) * 2008-06-30 2010-01-07 Eaton Corporation Continuous production system for magnetic processing of metals and alloys to tailor next generation materials
JP5942884B2 (ja) 2013-02-18 2016-06-29 Ｊｆｅスチール株式会社 方向性電磁鋼板の窒化処理設備および窒化処理方法
JP5942886B2 (ja) * 2013-02-18 2016-06-29 Ｊｆｅスチール株式会社 方向性電磁鋼板の窒化処理設備および窒化処理方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2008969A1 (de) * 1968-05-21 1970-01-30 Centre Nat Rech Metall
JPS56169768A (en) * 1980-05-30 1981-12-26 Matsushita Electric Ind Co Ltd Boriding method for aluminum
EP0340077A1 (de) * 1988-04-18 1989-11-02 Institut De Recherches De La Siderurgie Francaise (Irsid) Verfahren zur Verbesserung der Korrosionsbeständigkeit von metallischen Materialien
EP0640692A1 (de) * 1993-08-30 1995-03-01 SPS Technologies, Inc. Magnetische Streifen und ihrer Herstellungsverfahren

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804679A (en) † 1968-05-21 1974-04-16 Cockerill Method of coating steel products
DE3583212D1 (de) † 1984-11-08 1991-07-18 Mitsubishi Heavy Ind Ltd Verfahren und vorrichtung zum erwaermen eines metallbandes in einem durchlaufgluehofen.
US4872926A (en) * 1987-12-30 1989-10-10 American Air Liquide Process for heat treating metals or metal alloys in a thermal plasma
US5232789A (en) * 1989-03-09 1993-08-03 Mtu Motoren- Und Turbinen-Union Muenchen Gmbh Structural component with a protective coating having a nickel or cobalt basis and method for making such a coating
JPH03177560A (ja) * 1989-12-06 1991-08-01 Nippon Steel Corp 電気絶縁性板状材料の製造方法
DE4211167A1 (de) * 1992-03-31 1993-10-07 Thaelmann Schwermaschbau Veb Verfahren und Vorrichtung zur kontinuierlichen thermischen Oberflächenbehandlung stab- bzw. strangförmiger Materialien mit metallischer Oberfläche
FR2704239B1 (fr) † 1993-04-23 1995-07-13 Ugine Sa Procédé d'enrichissement en un élément d'alliage d'une tôle en acier magnétique.
JP3014603B2 (ja) † 1994-11-29 2000-02-28 川崎製鉄株式会社 金属帯の連続プラズマ処理装置
DE19527515C1 (de) † 1995-07-27 1996-11-28 Fraunhofer Ges Forschung Verfahren zur Herstellung von korrosionsgeschütztem Stahlblech
BE1010913A3 (fr) * 1997-02-11 1999-03-02 Cockerill Rech & Dev Procede de recuit d'un substrat metallique au defile.
FR2765684B1 (fr) † 1997-07-04 1999-08-20 Lorraine Laminage Controle de l'etancheite des tubes radiants dans les fours industriels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2008969A1 (de) * 1968-05-21 1970-01-30 Centre Nat Rech Metall
JPS56169768A (en) * 1980-05-30 1981-12-26 Matsushita Electric Ind Co Ltd Boriding method for aluminum
EP0340077A1 (de) * 1988-04-18 1989-11-02 Institut De Recherches De La Siderurgie Francaise (Irsid) Verfahren zur Verbesserung der Korrosionsbeständigkeit von metallischen Materialien
EP0640692A1 (de) * 1993-08-30 1995-03-01 SPS Technologies, Inc. Magnetische Streifen und ihrer Herstellungsverfahren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 057 (C - 098) 14 April 1982 (1982-04-14) *

Also Published As

Publication number Publication date
ATE253650T1 (de) 2003-11-15
JP4050461B2 (ja) 2008-02-20
JP2001520319A (ja) 2001-10-30
ES2210827T3 (es) 2004-07-01
DK1025275T3 (da) 2004-03-15
DK1025275T4 (da) 2011-03-21
EP1025275B2 (de) 2010-12-15
ES2210827T5 (es) 2011-05-04
WO1999020808A1 (fr) 1999-04-29
US6361628B1 (en) 2002-03-26
PT1025275E (pt) 2004-03-31
DE69819552T3 (de) 2011-06-09
EP1025275B1 (de) 2003-11-05
DE69819552T2 (de) 2004-05-13
EP1025275A1 (de) 2000-08-09
AU9524898A (en) 1999-05-10
DE69819552D1 (de) 2003-12-11

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