EP1478788A1 - Vorrichtung zur schmelztauchbeschichtung von metallsträngen - Google Patents
Vorrichtung zur schmelztauchbeschichtung von metallsträngenInfo
- Publication number
- EP1478788A1 EP1478788A1 EP03702565A EP03702565A EP1478788A1 EP 1478788 A1 EP1478788 A1 EP 1478788A1 EP 03702565 A EP03702565 A EP 03702565A EP 03702565 A EP03702565 A EP 03702565A EP 1478788 A1 EP1478788 A1 EP 1478788A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inductor
- roller
- container
- metal
- coating
- 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
Links
- 239000002184 metal Substances 0.000 title claims abstract description 65
- 238000000576 coating method Methods 0.000 title claims abstract description 55
- 239000011248 coating agent Substances 0.000 title claims abstract description 51
- 238000007598 dipping method Methods 0.000 title abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 11
- 238000003618 dip coating Methods 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 8
- 238000007654 immersion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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
- 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
- C23C2/003—Apparatus
- C23C2/0036—Crucibles
- C23C2/00361—Crucibles characterised by structures including means for immersing or extracting the substrate through confining wall area
- C23C2/00362—Details related to seals, e.g. magnetic means
-
- 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
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/24—Removing excess of molten coatings; Controlling or regulating the coating thickness using magnetic or electric fields
-
- 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
Definitions
- the invention relates to a device for hot-dip coating of metal strands, in particular steel strip, in which the metal strand can be passed at least in sections vertically through a container holding the molten coating metal and in which the metal strand is guided by at least one mounted roller.
- the strips are introduced into the dip coating bath from above in an immersion nozzle. Since the coating metal is in liquid form and you want to use gravitation together with blow-off devices to adjust the coating thickness, but the subsequent processes prohibit contact with the strip until the coating metal has completely solidified, the strip in the coating vessel must be deflected in a vertical direction. That happens with a role that is in the liquid Metal is running. Due to the liquid coating metal, this role is subject to heavy wear and is the cause of downtimes and thus failures in production.
- Usual dip coating systems also have limit values int of the coating speed. These are the limit values for the operation of the scraping nozzle, the cooling processes of the metal strip passing through and the heating process for setting alloy layers in the coating metal. As a result, the maximum speed is generally limited and, on the other hand, certain metal strips cannot be run at the maximum speed possible for the system.
- the invention is therefore based on the object of further developing a device for hot-dip coating of metal strands of the type mentioned at the outset in such a way that the disadvantages mentioned are overcome.
- roller or at least its axis passes through the side walls of the container and is mounted outside the container.
- the axles or rollers that are brought out can be the deflection rollers and / or the stabilizing rollers or all the rollers arranged in the immersion bath.
- sealing means for sealing the coating material are arranged in the region of the side wall of the container; these are preferably designed as an electromagnetic inductor.
- This configuration advantageously ensures that the device for immersion bath coating of a metal strand guarantees optimal stabilization and guidance of the metal strand in the coating bath, but nevertheless there is an exact bearing of the guide or stabilizing rollers with a long service life, since the bearing is no longer is exposed to the aggressive immersion bath.
- the electromagnetic inductor is arranged close to the coating metal. His magnetic field can thus achieve the greatest possible sealing effect.
- Both a traveling field inductor and a blocking field inductor can be used as the electromagnetic inductor.
- the sealing effect of the inductor with which the coating metal is retained in the immersion container can be optimized in that the section of the roller or the roller axis arranged in the region of the side wall of the container has a step-like shoulder. This is preferably designed as a fillet. Furthermore, the section of the inductor adjoining the shoulder of the roller or the roller axis is advantageously designed to be geometrically complementary to this shoulder. Furthermore, an electromagnetic coil can be arranged in the region of the adjacent section of the inductor in order to achieve the largest possible blocking field.
- the metal strand is optimally guided and stabilized if the strand is guided on both sides by one roller, that is to say by two rollers in total.
- the rollers are preferably made of ceramic material or they are coated with such material. To achieve high quality during the coating process in the bath, the rollers should continue to be connected to a rotary drive; then they are driven.
- the concept of the invention is particularly preferably used when the metal strand can be passed vertically through the container and through an upstream guide channel, at least one further electromagnetic inductor being arranged in the region of the guide channel and preventing the coating metal from moving downward out of the container flow out.
- FIG. 1 schematically shows a hot-dip coating vessel ml of a metal strand passed through it in the front view
- FIG. 2 shows the side view associated with FIG. 1,
- Figure 3 shows a first embodiment of the sealant between the roller and the container wall
- Figure 4 shows an alternative to Fig. 3 embodiment.
- FIGS. 1 and 2 show the principle of hot-dip coating of a metal strand 1, in particular a steel strip.
- the metal strand 1 to be coated enters a guide channel 12 of the coating installation vertically from below.
- the guide channel 12 forms the lower end of a container 3 which is filled with liquid coating metal 2.
- the metal strand 1 is guided vertically upwards in the direction of movement X. So that the liquid coating metal 2 cannot run out of the container 3, an electromagnetic inductor 13 is arranged in the region of the guide channel 12. This consists of two halves, one of which is arranged to the side of the metal strand 1.
- In the electromagnetic inductor 13 generates an electromagnetic traveling field or blocking field which retains the liquid coating metal 2 in the container 3 and thus prevents it from leaking.
- two rollers 4 are arranged in the container 3 of the coating metal 2, which are positioned above the inductor 13, that is to say run in the liquid coating metal 2.
- rollers 4 pass through the side walls 6 of the container 3 on both sides. At their two axial ends, the rollers 4 merge into axial sections 5 (roller axis) which are mounted in bearings 14 (roller bearings). Since the storage takes place outside the container 3, ie outside the coating metal 2, it can be carried out very precisely and with little play; the storage also has a long service life.
- roller arrangement and storage can of course also be used if the metal strand in the container 3 is deflected, e.g. an embodiment according to EP 0 556 833 A1 is intended.
- the coating metal 2 flowing out through the gap can be taken up in a collecting container in the simplest case, with a correspondingly small gap in the roller feedthrough, so that no further equipment requirements are required to carry out the coating process. It would then only be necessary to ensure that the area of the outflowing metal is kept under protective gas in order to avoid oxidation and the formation of undesirable contaminants in the coating metal.
- the procedure is preferably as shown in FIGS. 3 and 4:
- an electromagnetic inductor 7 with one or more electromagnetic coils 11 is arranged in the region of the side wall 6 of the container 3.
- the inductor 7 generates an electromagnetic field which retains the coating metal 2 in the container 3, it being possible for both a traveling field and a blocking field to be used.
- the inductor 7 acts as a sealing arrangement.
- An electromagnetic traveling field is used in the solution according to FIG. 3. Since the passage gap between the side wall 6 and roller 4 can be kept tight by the precise mounting of the roller 4, the field strength of the inductor 7 for sealing can be significantly less than it is when the tape is passed through the bottom of the container 3 (see inductor 13 in Fig. 1 and 2) is required. The overall height of the inductor 7 can thus be reduced.
- the pumping effect of the traveling field creates a flow in the passage area of the roller 4 through the side wall 6, which counteracts solidification of the coating metal 2 in the passage area of the roller 4 through the side wall 6. Furthermore, as can be seen in FIG. 3, the inductor 7 in the container 3 is brought close to the coating metal 2.
- a constricting electromagnetic blocking field is used for the magneto-brydrodynamic sealing.
- the blocking force of the magnetic field becomes fully effective when the field lines of the induction field, which is generated by the electromagnetic coil 11, are perpendicular to the direction of flow of the coating metal 2.
- the ceramic coating of the roller 4 in the exemplary embodiment has a shoulder 9 in the form of a fillet; the inductor 7 in its adjoining section 10 has an adapted, i.e. Kr. Complementary Geometry.
- this section 10 of the inductor 7 an electromagnetic coil 11 is arranged.
- the proposed concept of arranging a roller in a coating bath can be used not only for stabilizing rollers, but also for immersion rollers (e.g. for deflecting the metal strand).
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Coating Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10208963 | 2002-02-28 | ||
DE10208963A DE10208963A1 (de) | 2002-02-28 | 2002-02-28 | Vorrichtung zur Schmelztauchbeschichtung von Metallsträngen |
PCT/EP2003/000916 WO2003072843A1 (de) | 2002-02-28 | 2003-01-30 | Vorrichtung zur schmelztauchbeschichtung von metallsträngen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1478788A1 true EP1478788A1 (de) | 2004-11-24 |
EP1478788B1 EP1478788B1 (de) | 2005-12-14 |
Family
ID=27740553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03702565A Expired - Lifetime EP1478788B1 (de) | 2002-02-28 | 2003-01-30 | Vorrichtung zur schmelztauchbeschichtung von metallsträngen |
Country Status (17)
Country | Link |
---|---|
US (1) | US7214272B2 (de) |
EP (1) | EP1478788B1 (de) |
JP (1) | JP2005528520A (de) |
KR (1) | KR20040089085A (de) |
CN (1) | CN100350067C (de) |
AT (1) | ATE312953T1 (de) |
AU (1) | AU2003205709A1 (de) |
BR (1) | BR0306500A (de) |
CA (1) | CA2477275A1 (de) |
DE (2) | DE10208963A1 (de) |
ES (1) | ES2253657T3 (de) |
MX (1) | MXPA04008250A (de) |
PL (1) | PL205282B1 (de) |
RS (1) | RS76004A (de) |
RU (1) | RU2299925C2 (de) |
UA (1) | UA79109C2 (de) |
WO (1) | WO2003072843A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2905955B1 (fr) * | 2006-09-18 | 2009-02-13 | Vai Clecim Soc Par Actions Sim | Dispositif de guidage d'une bande dans un bain liquide |
TWI499692B (zh) * | 2013-06-17 | 2015-09-11 | China Steel Corp | For the use of steel plate hot dip bath immersed roller |
EP3587613A1 (de) | 2017-02-24 | 2020-01-01 | JFE Steel Corporation | Vorrichtung zum endlosplattieren von geschmolzenem metall und verfahren zum endlosplattieren von geschmolzenem metall |
DE102017204465A1 (de) * | 2017-03-17 | 2018-09-20 | Sms Group Gmbh | Lageranordnung |
WO2018228662A1 (de) * | 2017-06-12 | 2018-12-20 | Thyssenkrupp Steel Europe Ag | Rüssel für eine schmelztauchbeschichtungsanlage |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55128569A (en) * | 1979-03-26 | 1980-10-04 | Nippon Kokan Kk <Nkk> | Method and apparatus for hot galvanization |
JPH0324254A (ja) * | 1989-06-22 | 1991-02-01 | Kawasaki Steel Corp | 溶融金属めっき溶槽装置 |
US5252130A (en) * | 1989-09-20 | 1993-10-12 | Hitachi, Ltd. | Apparatus which comes in contact with molten metal and composite member and sliding structure for use in the same |
JPH04346641A (ja) * | 1991-05-23 | 1992-12-02 | Kawasaki Steel Corp | 連続溶融金属めっき設備のシール構造 |
JP3084318B2 (ja) * | 1992-07-10 | 2000-09-04 | 第一高周波工業株式会社 | 溶融金属メッキ用シンクロ−ル |
DE4242380A1 (de) * | 1992-12-08 | 1994-06-09 | Mannesmann Ag | Verfahren und Vorrichtung zum Beschichten der Oberfläche von strangförmigem Gut |
IN191638B (de) * | 1994-07-28 | 2003-12-06 | Bhp Steel Jla Pty Ltd | |
DE10014867A1 (de) * | 2000-03-24 | 2001-09-27 | Sms Demag Ag | Verfahren und Einrichtung zum Schmelztauchbeschichten von Metallsträngen, insbesondere von Stahlband |
-
2002
- 2002-02-28 DE DE10208963A patent/DE10208963A1/de not_active Withdrawn
-
2003
- 2003-01-30 WO PCT/EP2003/000916 patent/WO2003072843A1/de active IP Right Grant
- 2003-01-30 BR BR0306500-6A patent/BR0306500A/pt not_active IP Right Cessation
- 2003-01-30 US US10/500,676 patent/US7214272B2/en not_active Expired - Fee Related
- 2003-01-30 UA UA20040907838A patent/UA79109C2/uk unknown
- 2003-01-30 MX MXPA04008250A patent/MXPA04008250A/es not_active Application Discontinuation
- 2003-01-30 ES ES03702565T patent/ES2253657T3/es not_active Expired - Lifetime
- 2003-01-30 CA CA002477275A patent/CA2477275A1/en not_active Abandoned
- 2003-01-30 CN CNB038049104A patent/CN100350067C/zh not_active Expired - Fee Related
- 2003-01-30 PL PL371497A patent/PL205282B1/pl not_active IP Right Cessation
- 2003-01-30 DE DE50301921T patent/DE50301921D1/de not_active Expired - Lifetime
- 2003-01-30 AU AU2003205709A patent/AU2003205709A1/en not_active Abandoned
- 2003-01-30 KR KR10-2004-7008335A patent/KR20040089085A/ko not_active Application Discontinuation
- 2003-01-30 JP JP2003571521A patent/JP2005528520A/ja not_active Withdrawn
- 2003-01-30 EP EP03702565A patent/EP1478788B1/de not_active Expired - Lifetime
- 2003-01-30 RU RU2004128949/02A patent/RU2299925C2/ru not_active IP Right Cessation
- 2003-01-30 AT AT03702565T patent/ATE312953T1/de not_active IP Right Cessation
- 2003-01-31 RS YU76004A patent/RS76004A/sr unknown
Non-Patent Citations (1)
Title |
---|
See references of WO03072843A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10208963A1 (de) | 2003-09-11 |
US7214272B2 (en) | 2007-05-08 |
RS76004A (en) | 2006-10-27 |
ES2253657T3 (es) | 2006-06-01 |
RU2004128949A (ru) | 2005-04-10 |
WO2003072843A1 (de) | 2003-09-04 |
EP1478788B1 (de) | 2005-12-14 |
PL205282B1 (pl) | 2010-03-31 |
ATE312953T1 (de) | 2005-12-15 |
CA2477275A1 (en) | 2003-09-04 |
US20050120950A1 (en) | 2005-06-09 |
CN1639374A (zh) | 2005-07-13 |
AU2003205709A1 (en) | 2003-09-09 |
BR0306500A (pt) | 2004-11-23 |
JP2005528520A (ja) | 2005-09-22 |
CN100350067C (zh) | 2007-11-21 |
UA79109C2 (en) | 2007-05-25 |
RU2299925C2 (ru) | 2007-05-27 |
DE50301921D1 (de) | 2006-01-19 |
PL371497A1 (en) | 2005-06-27 |
MXPA04008250A (es) | 2005-07-13 |
KR20040089085A (ko) | 2004-10-20 |
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