EP3025107A1 - Dispositif de traitement thermique de produits semi-finis en acier pourvus d'un revêtement - Google Patents

Dispositif de traitement thermique de produits semi-finis en acier pourvus d'un revêtement

Info

Publication number
EP3025107A1
EP3025107A1 EP14741577.2A EP14741577A EP3025107A1 EP 3025107 A1 EP3025107 A1 EP 3025107A1 EP 14741577 A EP14741577 A EP 14741577A EP 3025107 A1 EP3025107 A1 EP 3025107A1
Authority
EP
European Patent Office
Prior art keywords
conveying
conveyor
semi
element group
elements
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
EP14741577.2A
Other languages
German (de)
English (en)
Other versions
EP3025107B1 (fr
Inventor
Janko Banik
Maria KÖYER
Georg Parma
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Steel Europe AG
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 ThyssenKrupp Steel Europe AG filed Critical ThyssenKrupp Steel Europe AG
Priority to PL14741577T priority Critical patent/PL3025107T3/pl
Publication of EP3025107A1 publication Critical patent/EP3025107A1/fr
Application granted granted Critical
Publication of EP3025107B1 publication Critical patent/EP3025107B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
    • F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/028—Multi-chamber type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B2009/3094—Means to store a part of the charge in the furnace

Definitions

  • the present invention relates to a device for heat treatment of coated semi-finished steel products, with at least one heatable continuous furnace, with at least one conveyor for the semi-finished steel products, wherein the
  • Conveyor has conveying elements and the semi-finished steel in the continuous furnace rest on the conveyor elements.
  • the heat treatment of steel semi-finished products takes place in particular for the purpose of austenitizing to prepare the press-hardening.
  • Austenitmaschine with subsequent press hardening i. the deformation and quenching of the heated to about 800 - 1000 ° C semi-finished steel, the formed steel semi-finished product has a martensitic structure, whereby the strength of the formed
  • mullite as a ceramic material for the rollers.
  • a liquid to viscous Al-Si layer is formed on the mullite rolls in a heating profile-dependent area. Since the Al-Si alloyed during the heat treatment with the iron of the steel semi-finished product, , - This AlSi layer is formed on the ceramic rollers within a
  • Zinc alloy coatings for example, coatings with a zinc-nickel coating known. Even those with a zinc-based coated steel semi-finished products must be austenitized to prepare the press-hardening.
  • Both AlSi and zinc-based semi-finished steel products are suitable for direct press hardening.
  • direct press hardening a blank is punched out of a coil and fed to the heat treatment without pre-deformation.
  • Zinc-aluminum phases which can lead to cracking of the component.
  • Zn-Al particles can also be detected on the surface of the austenitized steel semi-finished products in such changing campaigns, for example, which can both result in higher wear of the pressing tool and, moreover, can influence the surface quality and paint adhesion of the component.
  • the present invention is therefore the object of the known
  • Devices for heat treatment of coated steel semi-finished products in such a way and further develop that in direct press-hardening campaigns with AlSi-coated steel semi-finished, zinc-based coated steel semi-finished products and / or further suitable for heat deformation suitable coating systems on an organic or inorganic basis can be driven without this affecting during press hardening and without the press-hardened products being impaired.
  • the previously derived and indicated object is achieved in that at least one decoupling section of the continuous furnace has at least two conveyor element groups, each conveyor element group at least one
  • Has conveying element and the semi-finished steel in the decoupling section rests either on the conveying elements of the first conveyor element group or the conveying elements of the second conveyor element group.
  • Adhesions come, for example, acted upon AlSi melt conveyor elements in contact. As a result, the mutual contamination of the respective coatings with coating-foreign material is effectively avoided.
  • such decoupling is just as unnecessary as in the temperature and time range in which the AlSi alloy, for example, has been alloyed into the material of the steel semi-finished product is that there is no longer any adhesion of the coating on the conveyor elements.
  • the inventively ensured decoupling of the transport of differently coated semi-finished steel products in the critical temperature-time range a largely free temperature control is ensured within the continuous furnace, i. Both during the heat treatment of the AlSi-coated and the zinc-coated components, for example, the optimum temperature profiles for austenitizing can be driven in the device.
  • AlSi-coated steel semi-finished products preferably rest on the conveying elements of the first conveying element group and preferably with semi-finished steel products coated on zinc base
  • the conveying elements are designed according to a first alternative as rollers. These transport rollers are largely proven and reliable.
  • the conveying elements are as with a
  • Transport chain connected semi-finished carrier executed.
  • This embodiment makes it possible in a guide of the semi-finished carrier by a slot in the - -
  • Oven wall to arrange the moving parts, ie essentially the transport chain outside the high temperature range.
  • Conveying element group are arranged in a second furnace chamber of the decoupling section, it is ensured that, for example, during operation of the first furnace chamber, the second furnace chamber of a maintenance, in particular a cleaning of the conveying elements can be subjected.
  • Decoupling can be ensured in a particularly unproblematic way by virtue of the fact that, in a furnace chamber of the decoupling section, the first conveyor element group is designed as a first roller conveyor and the second conveyor element group as a second roller conveyor. This ensures a very compact arrangement of the decoupled conveyor element groups.
  • At least one furnace chamber of the continuous furnace is height-adjustable and / or laterally adjustable.
  • the roller tracks by appropriate adjustment of
  • Oven switch arranged. With the help of this furnace turn a potentially complex partial or complete operation of the furnace chamber can be reduced or avoided.
  • the conveyor elements arranged in a furnace chamber are arranged, for example, height-adjustable or laterally adjustable. - -
  • the decoupling according to the invention can be ensured without height adjustment of a furnace chamber or the use of a furnace switch.
  • this relative height adjustment for example, every second roller in a roller conveyor or every second semi-finished carrier connected to a transport chain can change campaigns within the roller conveyor
  • the device according to the invention is further configured in that the continuous furnace has a homogenization section following the decoupling section in the conveying direction.
  • AlSi coating in the material of the steel semi-finished product leads to the fact that at least the essential part of the homogenization takes place in a region in which, for example, AlSi deposits on the conveying elements are to be feared.
  • a timely transfer of the austenitic steel semi-finished products is ensured by an exit area of the continuous furnace is assigned to a forming press.
  • a forming press When transferring the semi-finished steel products to the forming press, it is crucial that the heated steel semi-finished products enter the press in a defined state and are subsequently press-hardened. This is due to a direct assignment of the output range of the continuous furnace to a
  • Fig. 2 shows a first embodiment of a device according to the invention in a plan view
  • Fig. 3 shows a second embodiment of a device according to the invention in a side view.
  • the schematic representation of a device according to the invention for the heat treatment of coated steel semi-finished products 1 has a continuous furnace 2, which is only indicated in FIG. Shown here is a conveyor 3 for the semi-finished steel products 1, which has rollers 4 as conveying elements. As can be seen, the semi-finished steel products 1, which are austenitizing as direct products for direct press hardening and designed as blanks, rest on the rollers 4 in the continuous furnace.
  • a decoupling section 5 of the continuous furnace 2 has two conveyor element groups 6, 7.
  • each of the conveying element groups 6, 7 has a plurality of conveying elements designed as rollers 4 and the semi-finished steel product 1 is located in the decoupling section 5 either on the conveying elements of the first
  • FIG. 1 schematically shows that the decoupling section 5 is arranged in the temperature-time range in which the AlSi coating, for example, already liquefied (AlSiiq), ie no longer in the originally solid state - -
  • AlSisoi has not yet been alloyed by the high temperatures in the material of the steel semi-finished product 1 (AlSii eg ).
  • the first conveying element group 6 is arranged in a first furnace chamber 8 of the decoupling section 5 and the second conveying element group 7 is arranged in a second furnace chamber 9 of the decoupling section 5.
  • Conveying element group 7 each designed as superimposed roller tables.
  • a furnace chamber 10 is designed to be adjustable in the side and thus forms a so-called kiln ferry. From the oven chamber 10 are the
  • Semi-finished steel products 1 passed to a homogenization section 11, whose
  • the device is in the decoupling section 5
  • oven chamber 10 adjustable in height, whereby the transfer of the
  • Semi-finished steel 1 is guaranteed without a separate furnace switch.
  • the press-hardened workpiece 13 is shown in the forming press 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

L'invention concerne un dispositif de traitement thermique de demi-produits en acier pourvus d'un revêtement, comprenant au moins un four à passage continu (2) pouvant être chauffé et au moins un dispositif de transport (3) destiné aux demi-produits en acier (1). Le dispositif de transport (3) comporte des éléments de transport (4) et les demi-produits en acier (1) sont placés sur les éléments de transport (4) dans un four à passage continu (2). L'invention garantit que, même lorsque des campagnes de différents demi-produits en acier pourvus d'un revêtement sont transportées de façon variable, les interactions sont en grande partie évitées par le fait qu'au moins une section de découplage (5) du four à passage continu (2) comporte au moins deux groupes d'éléments de transport (6, 7), que chaque groupe d'éléments de transport (6, 7) comporte au moins un élément de transport (4) et que le demi-produit en acier (1) dans la section de découplage (5) est placé soit sur les éléments de transport (4) du groupe d'éléments de transport (6) soit sur les éléments de transport (4) du second groupe d'éléments de transport (7).
EP14741577.2A 2013-07-22 2014-07-16 Procédé de traitement thermique de produits semi-finis en acier pourvus d'un revêtement Not-in-force EP3025107B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14741577T PL3025107T3 (pl) 2013-07-22 2014-07-16 Sposób obróbki cieplnej powlekanych półfabrykatów stalowych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310107777 DE102013107777A1 (de) 2013-07-22 2013-07-22 Vorrichtung zur Wärmebehandlung beschichteter Stahlhalbzeuge
PCT/EP2014/065304 WO2015011002A1 (fr) 2013-07-22 2014-07-16 Dispositif de traitement thermique de produits semi-finis en acier pourvus d'un revêtement

Publications (2)

Publication Number Publication Date
EP3025107A1 true EP3025107A1 (fr) 2016-06-01
EP3025107B1 EP3025107B1 (fr) 2017-06-14

Family

ID=51211760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14741577.2A Not-in-force EP3025107B1 (fr) 2013-07-22 2014-07-16 Procédé de traitement thermique de produits semi-finis en acier pourvus d'un revêtement

Country Status (8)

Country Link
US (1) US10041733B2 (fr)
EP (1) EP3025107B1 (fr)
CN (1) CN105408715B (fr)
DE (1) DE102013107777A1 (fr)
ES (1) ES2640390T3 (fr)
MX (1) MX372842B (fr)
PL (1) PL3025107T3 (fr)
WO (1) WO2015011002A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11708620B2 (en) * 2014-06-06 2023-07-25 Nippon Steel & Sumikin Texeng. Co., Ltd. Far-infrared radiation multi-stage type heating furnace for steel sheets for hot stamping
DE102024131587A1 (de) * 2024-10-29 2026-04-30 Voestalpine Metal Forming Gmbh Verfahren zum Betreiben einer Ofenanlage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5885522A (en) * 1996-09-12 1999-03-23 Midland Steel Products Co. Method and apparatus for heat treating and straightening structural members
JP2000051920A (ja) * 1998-08-10 2000-02-22 Sumitomo Metal Ind Ltd 連続化熱間圧延設備
ATE553344T1 (de) * 2006-03-03 2012-04-15 Schwartz Eva Mehrkammer-durchlaufofen mit schutzgasbetrieb und verfahren zum oxidfreien erwärmen von verzinkten werkstücken
DE102006020781B3 (de) * 2006-05-03 2007-11-22 Benteler Automobiltechnik Gmbh Ofen
DE102009026251A1 (de) * 2009-07-24 2011-02-03 Thyssenkrupp Steel Europe Ag Verfahren und Vorrichtung zum energieeffizienten Warmumformen
DE102010017354A1 (de) 2010-06-14 2011-12-15 Thyssenkrupp Steel Europe Ag Verfahren zum Herstellen eines warmgeformten und gehärteten, mit einer metallischen Korrosionsschutzbeschichtung überzogenen Stahlbauteils aus einem Stahlflachprodukt
DE102011051270A1 (de) 2011-06-22 2012-12-27 Benteler Automobiltechnik Gmbh Rolle für einen Rollenofen sowie Rollenofen und Verfahren zur Herstellung einer Rolle für einen Rollenofen
DE102012110649C5 (de) * 2012-11-07 2018-03-01 Benteler Automobiltechnik Gmbh Warmformlinie sowie Verfahren zur Herstellung eines warmumgeformten und pressgehärteten Kraftfahrzeugbauteils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2015011002A1 *

Also Published As

Publication number Publication date
WO2015011002A1 (fr) 2015-01-29
US20160195332A1 (en) 2016-07-07
CN105408715A (zh) 2016-03-16
DE102013107777A1 (de) 2015-01-22
CN105408715B (zh) 2017-09-08
PL3025107T3 (pl) 2017-11-30
ES2640390T3 (es) 2017-11-02
US10041733B2 (en) 2018-08-07
EP3025107B1 (fr) 2017-06-14
MX372842B (es) 2020-06-26
MX2016000401A (es) 2016-04-20

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