EP1520643A1 - Procédé pour revêtir une lingotière d'une machine de coulée continue ainsi que lingotière ainsi obtenue - Google Patents

Procédé pour revêtir une lingotière d'une machine de coulée continue ainsi que lingotière ainsi obtenue Download PDF

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Publication number
EP1520643A1
EP1520643A1 EP04021767A EP04021767A EP1520643A1 EP 1520643 A1 EP1520643 A1 EP 1520643A1 EP 04021767 A EP04021767 A EP 04021767A EP 04021767 A EP04021767 A EP 04021767A EP 1520643 A1 EP1520643 A1 EP 1520643A1
Authority
EP
European Patent Office
Prior art keywords
coating
metal
layer
wear protection
protection layer
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
EP04021767A
Other languages
German (de)
English (en)
Other versions
EP1520643B1 (fr
Inventor
Hans-Jürgen Hemschemeier
Dietmar Kolbeck
Hans-Günter Wobker
Dirk Rode
Hans Dirk Piwowar
Gerhard HUGENSCHÜTT
Roland Hauri
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.)
Cunova GmbH
Original Assignee
KM Europa Metal 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 KM Europa Metal AG filed Critical KM Europa Metal AG
Publication of EP1520643A1 publication Critical patent/EP1520643A1/fr
Application granted granted Critical
Publication of EP1520643B1 publication Critical patent/EP1520643B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/059—Mould materials or platings
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying

Definitions

  • the invention relates to a method for coating one in one Continuous casting plant used Kokillen emotionss according to the features in Preamble of claim 1 and on the other hand a Kokillen redesign according to the features in the preamble of claim 13.
  • the basic structure of a mold is usually made of an outer Steel structure and the actual forming part of the mold, the Kokillenanalysis, today almost exclusively made of copper or a Copper alloy exists.
  • the steel shell supporting the mold body has the Task to position the Kokillenanalysis and the cooling ensure the necessary water cycle.
  • continuous Continuous casting of metal smaller formats are predominantly Kokillenrohre used.
  • the cast strand forms in the mold tube due to the high heat extraction a cast strand shell, which when leaving the Kokillenrohrs must have sufficient dimensional stability. Due to the Temperature reduction of the potted metal decreases the cross section of the Casting strand with increasing casting time. To one as possible continuous contact of the cast strand shell with the Kokillenrohrober Design to ensure the cross section or the opening of the Kokillenrohrs also from the head to the foot with a to the G fauxstrangschale adapted conicity executed.
  • the different types of metals due to their composition differing shrinkage behavior, so that the taper a mold tube is not suitable for every type of metal. Is the taper of the Kokillenrohrs or Kokillen stressess too large, can within the Mold tube strong wear occur.
  • Inner surface of the mold tube with a galvanic wear protection layer to be made of hard chrome.
  • the layer thickness of this hard chrome layer is usually 0.05 mm to 0.12 mm. Due to galvanic Separation process, the layer thickness in the Kokillenrohrecken is thinner executed.
  • the friction of the cast strand shell opposite the inner Kokillenrohrober Assembly by additional casting aids to reduce. In certain Kokillenrohrbaauformen can wear of the Kokillenrohreck Schemes by a complex geometry change of Cross section can be achieved without causing a loss of G hasslestrang entry and the cooling of the side surfaces of the casting strand arises.
  • the invention is based on the object, a method for coating a mold body used in a continuous casting plant made of copper or a copper alloy with an internal coating of chrome show, by which a particularly high wear resistance, is achievable, in particular in the lower region of the mold body, and a Kokillenanalysis with these properties show.
  • the additional coating is a metal-ceramic wear protection layer, their layer hardness is a factor of 0.6 to 2 of the layer hardness of Internal coating different.
  • Chromium can reduce the layer hardness of the metal-ceramic wear protection layer a range of 650 HV to 2,000 HV, preferably in a range of 1,100 HV to 1,400 HV.
  • Layer thicknesses up to 0.2 mm of the metal-ceramic wear protection layer are possible, the layer thickness preferably increases in the casting direction. Basically, the layer height also over the entire extent of the metal-ceramic wear protection layer be constant.
  • a metal-ceramic wear protection layer For the purposes of the invention is a coating, the carbide and having oxidic constituents.
  • the height of the coated area depends on the size of the Kokillen stressess, in the context of the invention, in principle, a one-piece Can be mold tube.
  • the height of the metal-ceramic wear protection layer can be up to half the length of mold tubes Kokillenrohrs amount.
  • the layer thickness distribution can over their horizontal course i. vary transversely to the wedge shape. In particular, can be the layer thickness on side surfaces of a Kokillenrohrs of the layer thickness in differentiate between the corner regions of the mold tube. Basically, that is Execution of the metal-ceramic wear protection layer the typical Wear pattern of the mold body adapted. Therefore, the additional Wear protection layer even partially, e.g. only in the corner areas or be applied only on the side surfaces of the mold body.
  • metal-ceramic wear protection layer is applied only in areas where there is a galvanic deposition process significantly thinner interior coatings have trained. Deviations of more than 30% are significant to understand the average layer thickness of the inner coating.
  • the coating head a control curve runs through, starting at a starting point, in which the Coating jet in an angular range greater than 40 °, in particular in an angular range of 40 ° to 60 ° to the surface to be coated and terminating at a turning point in which the coating head is in an angle less than or equal to 40 °, in particular less than or equal to 20 ° to the surface to be coated is facing the direction of Coating jet measured beam length during the passage through the Control cam is kept substantially constant.
  • the control curve can of course be traversed in both directions. It is about in the control cam preferably around a portion of a branch of a parabolic cam. That is, the course between reversal point and starting point is strictly monotonically increasing or decreasing, depending on how and reversal point are oriented with respect to the surface to be coated.
  • the maximum length of the coating jet depends on the Operating parameters and is preferably in a range of 250 mm 400 mm.
  • a constant Output amount e.g.
  • the coating head when passing through the cam between start point and reversing point and back simultaneously across the coating jet and parallel to the coating surface is moved, so that in the result an oscillating, in particular a zigzag-shaped space curve of the coating head is passed through.
  • the space curve can vary depending on the side Traversing speed of course also meandering or e.g. also sinuskurvenförmig, wherein in a multiple driving through the Space curves a phase shift between the individual space curves can be provided to ensure a uniform order of the metal-ceramic wear protection layer to ensure.
  • the quasi-lateral shift The coating head makes it possible to even larger areas evenly coated layer thickness distribution to coat.
  • layer thickness can only be controlled by a robot controller Coating head can be ensured. That means the Control curve and feed rate in the thermal coating system are programmed and specified by the program Cams are traversed once or several times. Basically it is expedient to run the space curves several times.
  • Training is provided that the space curve as a function of the desired layer thickness per 0,1 mm to be applied 5 to 15 times becomes. This means that for a layer thickness of 0.2 mm at the exit end of cast strand 10 to 30 passes for applying the metal-ceramic wear protection layer required are.
  • the relative Dwell time of the coating head is greater than in the middle range between the turning points and the starting points, can be provided that the movement speed of the coating head has a function his position on the cam is. In particular, it may be provided that the speed of movement of the coating head at a Direction reversal is increased.
  • the thickness of the metal-ceramic wear protection layer may be in the casting direction increase, wherein on the Kokilleninnenseite before applying the Internal coating of the thickness and the thickness profile of the metal-ceramic wear protection layer corresponding recesses are formed. On In this way it is possible to achieve the desired conicity of the mold tube maintain.
  • the machine adaptation of the geometry of the mold tube must be made of chrome before applying the internal coating.
  • An optimal adaptation of the metal-ceramic wear protection layer to the desired final contour of the Kokillen stressess can be achieved when the Metal-ceramic wear protection layer subsequent shaping mechanical is processed.
  • individual areas of the metal-ceramic wear protection layer with tools with geometrically determined or undefined cutting edge are possible.
  • the method according to the invention is particularly suitable for Die tubes to coat only in the region of their corner radii or the To deliberately spare corner radii and the remaining interior surfaces of the Coating mold tube.
  • By applying the described Method of both sides of a Kokillenrohrs can also be a continuous coating of the mold tube can be achieved. This is in the given a very good wear protection at the bottom of the mold tube, while in the upper part of the mold tube an additional diffusion barrier created by the metal-ceramic wear protection layer.
  • the main point is that the inner coating of chrome, in particular Hard chrome with an additional metal-ceramic wear protection layer is provided, which is applied by means of a thermal spraying process.
  • the layer hardness of the metal-ceramic wear protection layer is different by a factor of 0.6 to 2 of the layer hardness of Internal coating. It is preferably over a factor of 1.2 to 1.4 the layer hardness of the inner coating.
  • the inner coating can be completely or partially covered with the metal-ceramic wear protection layer.
  • FIG. 1 with a mold body in the form of a mold tube is designated in Figure 1, which is already provided in a manner not shown with an inner coating of hard chrome.
  • a metal-ceramic wear protection layer is applied by means of a thermal spraying process, whose layer hardness differs by a factor of 0.6 to 2 from the layer hardness of the inner coating of hard chrome.
  • the drawn zigzag-shaped space curve 2 illustrates the course of a coating head, not shown, during the coating process.
  • the space curve 2 is traversed several times from right to left and from left to right as a function of the desired layer thickness according to the pointing in the X direction arrow P 2 , wherein an oscillating movement is performed, as the arrow P 1 illustrates.
  • Each individual branch of the space curve 2 extends between a starting point and a turning point 4, both of which lie on a control cam 5.
  • Figure 2 shows the possible course of a control cam 5, relative to a surface to be coated 6.
  • the lying between the starting point 3 and the turning point 4 area of the control cam 5 corresponds to a branch of the zigzag-shaped space curve 2 of Figure 1.
  • the control cam fifth has a parabolic shape, wherein the vertex of the notional parabola is a fictitious end point 7, which lies in the image plane above the surface 6 to be coated.
  • a tangent T which passes through the fictitious end point 7, is parallel to the surface 6 to be coated, which in this embodiment is a straight plane. From the illustration it is clear that the turning point 4 is to a certain extent outside the surface 6 or the mold body 1 to be coated.
  • a tangent T 1 through the turning point 4 illustrates the direction of the coating jet 9 and its length L until it hits the surface 6 to be coated.
  • the tangent T 1 encloses an angle ⁇ 1 with the surface to be coated, which is smaller than 20 °
  • the angle ⁇ 2 between the tangent T 2 through the starting point 3 of the coating head includes with the surface 6 to be coated an angle ⁇ 2 , which in this embodiment is about 40 °.
  • the coating head is continuously, between the starting point 3 and the reversal point 4 back and forth (arrow P 1 ) and simultaneously transversely to the coating beam 8 and parallel to the surface to be coated 6 moves so that the zigzag-shaped Course of the space curve 2 results, as shown in Figure 1.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Mold Materials And Core Materials (AREA)
EP04021767A 2003-10-01 2004-09-14 Procédé pour revêtir une lingotière d'une machine de coulée continue Expired - Lifetime EP1520643B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10345865A DE10345865A1 (de) 2003-10-01 2003-10-01 Verfahren zum Beschichten eines in einer Stranggießanlage eingesetzten Kokillenkörpers sowie Kokillenkörper einer Stranggießanlage
DE10345865 2003-10-01

Publications (2)

Publication Number Publication Date
EP1520643A1 true EP1520643A1 (fr) 2005-04-06
EP1520643B1 EP1520643B1 (fr) 2009-10-28

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ID=34306223

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04021767A Expired - Lifetime EP1520643B1 (fr) 2003-10-01 2004-09-14 Procédé pour revêtir une lingotière d'une machine de coulée continue

Country Status (3)

Country Link
EP (1) EP1520643B1 (fr)
AT (1) ATE446813T1 (fr)
DE (2) DE10345865A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008086862A1 (fr) 2007-01-18 2008-07-24 Sms Siemag Ag Lingotière avec revêtement
CN111893416A (zh) * 2020-08-07 2020-11-06 和县卜集振兴标准件厂 一种冷冲压模具表面激光喷涂处理方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5973152A (ja) * 1982-10-21 1984-04-25 Mishima Kosan Co Ltd 連続鋳造用鋳型及びその製造方法
JPH01233047A (ja) 1988-03-15 1989-09-18 Nomura Tokin:Kk 連続鋳造用鋳型の製造方法
EP0774525A1 (fr) * 1995-11-17 1997-05-21 Ngk Insulators, Ltd. Moule d'un alliage de cuivre pour aluminium ou ses alliages
WO1998021379A1 (fr) * 1996-11-08 1998-05-22 Monitor Coatings And Engineers Limited Revetement de composants de machine a moulage continu
JPH10230348A (ja) 1997-02-20 1998-09-02 Mishima Kosan Co Ltd 連続鋳造用鋳型
US5958520A (en) * 1998-07-13 1999-09-28 Ford Global Technologies, Inc. Method of staggering reversal of thermal spray inside a cylinder bore

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5973152A (ja) * 1982-10-21 1984-04-25 Mishima Kosan Co Ltd 連続鋳造用鋳型及びその製造方法
JPH01233047A (ja) 1988-03-15 1989-09-18 Nomura Tokin:Kk 連続鋳造用鋳型の製造方法
EP0774525A1 (fr) * 1995-11-17 1997-05-21 Ngk Insulators, Ltd. Moule d'un alliage de cuivre pour aluminium ou ses alliages
WO1998021379A1 (fr) * 1996-11-08 1998-05-22 Monitor Coatings And Engineers Limited Revetement de composants de machine a moulage continu
JPH10230348A (ja) 1997-02-20 1998-09-02 Mishima Kosan Co Ltd 連続鋳造用鋳型
US5958520A (en) * 1998-07-13 1999-09-28 Ford Global Technologies, Inc. Method of staggering reversal of thermal spray inside a cylinder bore

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0081, no. 80 (M - 318) 18 August 1984 (1984-08-18) *
PATENT ABSTRACTS OF JAPAN vol. 0132, no. 44 (M - 834) 7 June 1989 (1989-06-07) *
PATENT ABSTRACTS OF JAPAN vol. 0135, no. 60 (M - 906) 13 December 1989 (1989-12-13) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 14 31 December 1998 (1998-12-31) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008086862A1 (fr) 2007-01-18 2008-07-24 Sms Siemag Ag Lingotière avec revêtement
RU2418649C2 (ru) * 2007-01-18 2011-05-20 Смс Зимаг Акциенгезелльшафт Кристаллизатор с покрытием
CN101583446B (zh) * 2007-01-18 2012-11-21 Sms西马格股份公司 带有涂层的结晶器和用于结晶器的涂敷方法
CN111893416A (zh) * 2020-08-07 2020-11-06 和县卜集振兴标准件厂 一种冷冲压模具表面激光喷涂处理方法
CN111893416B (zh) * 2020-08-07 2022-08-05 和县卜集振兴标准件厂 一种冷冲压模具表面激光喷涂处理方法

Also Published As

Publication number Publication date
DE502004010290D1 (de) 2009-12-10
ATE446813T1 (de) 2009-11-15
DE10345865A1 (de) 2005-04-21
EP1520643B1 (fr) 2009-10-28

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