EP1915469B1 - Vorrichtung zur schmelztauchbeschichtung eines metallstranges - Google Patents

Vorrichtung zur schmelztauchbeschichtung eines metallstranges Download PDF

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Publication number
EP1915469B1
EP1915469B1 EP06762230A EP06762230A EP1915469B1 EP 1915469 B1 EP1915469 B1 EP 1915469B1 EP 06762230 A EP06762230 A EP 06762230A EP 06762230 A EP06762230 A EP 06762230A EP 1915469 B1 EP1915469 B1 EP 1915469B1
Authority
EP
European Patent Office
Prior art keywords
metal
coating
guide channel
inductors
coating metal
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.)
Not-in-force
Application number
EP06762230A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1915469A2 (de
Inventor
Holger Behrens
Rolf Brisberger
Hans-Georg Hartung
Rüdiger ZERBE
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.)
SMS Siemag AG
Original Assignee
SMS Siemag 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 SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP1915469A2 publication Critical patent/EP1915469A2/de
Application granted granted Critical
Publication of EP1915469B1 publication Critical patent/EP1915469B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • C23C2/38—Wires; Tubes

Definitions

  • the invention relates to a device for hot dip coating a metal strand, in particular a steel strip, in which the metal strand is passed vertically through a container receiving the molten coating metal and through an upstream guide channel, in the region on both sides of the metal rod at least two inductors for generating an electromagnetic field for retention of the coating metal are arranged in the container.
  • Such a device is also the subject of the earlier German patent application ( 103 30 656.0 from 08.07.2004).
  • the local, underlying the preamble invention invention has for its object to provide a device for hot dip coating of a metal strand, the certain disadvantages of the prior art mentioned therein, in particular the EP 0 673 444 B1 , of the WO 96/03533 and the JP 5086446 , overcomes. This is to ensure that the immersion bath remains quiet when using an electromagnetic shutter, whereby the quality of the coating is to be increased.
  • this cross-sectional widening leads to an increased volume of the coating metal in the region of the guide channel, and forms the starting point of the present invention.
  • the invention has for its object to provide further measures that cause the immersion bath when using an electromagnetic shutter remains calm, thereby increasing the quality of the coating.
  • the increased volume of the coating metal is either in the bottom region of the container or in the guide channel, but always above the inductors.
  • the increased volume there is at least predominantly outside the effective magnetic field of the inductors.
  • the increased volume is targeted in the range of the magnetic field of the inductors, which results in that the area of increased volume is exposed to the influence of the magnetic field.
  • an effective increase in volume is achieved in that the lateral feed takes place by at least two tubes, which preferably occur on the narrow sides of the rectangular guide channel.
  • Fig. 1 only partially shown device is to be coated metal strand 1 in the form of a steel strip vertically through a molten metal coating 2 preferably upwards, in the conveying direction R, deducted.
  • the coating metal 2 may in particular be zinc or an aluminum and is accommodated in a suitable, only indicated container 3 with exclusion of air.
  • a passage opening 3b for the metal strand 1 is arranged.
  • a guide channel 4 in the form of a narrow in principle, rectangular tube.
  • the band-shaped metal strand 1 is guided with all-round play through the guide channel 4, wherein the free cross-section of the guide channel 4 is filled in the form of an annular gap RS over a certain vertical distance with coating metal 2, so that the metal strand 1 in the upper portion 4a of the guide channel 4th surrounded by coating metal 2.
  • the Coating metal 2 thus represents in the upper region 4a a kind of liquid ring seal, which fills the annular gap RS down to U.
  • inductors 5 are arranged on both sides of the longitudinal walls 6 of the guide channel 4.
  • the inductors 5 generate a strong magnetic field in the region of the guide channel 4, which counteracts the gravity of the annular coating metal 2 there so far that the coating metal 2 can not run down from the guide channel 4, but remains substantially stationary at point U.
  • annular gap RS are the clear representation of greatly enlarged and not shown to scale.
  • the volume of the annular coating metal 2 acting as a ring seal in the upper region 4a of the guide channel 4 can actually be kept very small.
  • an enlarged volume of the coating metal 2 is arranged in the guide channel 4.
  • the upper, in the passage opening 3b of the bottom 3a opening area 4a of the guide channel 4 funnel-shaped expanded by the lower width B1 of the longitudinal walls 6 increases upwards to the width B2.
  • the resulting Inclination of the narrow transverse walls 7 at an acute angle to the vertical is about 1 to 15 degrees.
  • the volume of the coating metal is increased here in the region of the annular gap RS, specifically on the narrow transverse sides of the metal strand 1.
  • the induced by the magnetic field turbulence in the molten metal coating 2 are decisively reduced and calms the bath especially on its surface.
  • Fig. 2 a second embodiment of the invention is shown.
  • the increased volume of the coating metal 2 is achieved by a step-shaped widening portion 4a 'of the guide channel 4'.
  • the longitudinal walls 6 'of the lower width B1' stepwise increased to the upper width B2 'and thereby form the step-shaped, in the passage opening 3b' of the bottom 3a 'opening area 4a'.
  • the stepped broadening of the longitudinal walls 6 'of the guide channel 4', and thus of the area 4a ', begins at the bottom at a distance X to half height H / 2 and thus approximately in the upper third H / 3 of the height H.etwa half height H / 2 the height H of the inductors 5 and extends beyond the height H, and then in the longitudinal sides of the rectangular passage opening 3b 'in the bottom 3a' of the container 3 'transition.
  • FIG. 4 to 7 are possible cross-sectional shapes of an interruption wall 9, 9 ', 9 "and 9'” shown.
  • the interruption wall 9 to 9 '" may consist of suitable electrically conductive or non-conductive material, in particular of metal or ceramic, and edged in cross-section, such as rectangular, single or double bevelled, in particular at an angle of 15 to 60 degrees to the vertical, or also, enclosing an angle of 15 to 60 degrees, tapered or funnel-shaped upwards and / or downwards.
  • Fig. 8 is a fourth embodiment of the invention, according to the Fig. 1 , but in the central section across the metal strand 1, shown.
  • the guide channel 4 in the height of the upper half H / 2 of the height H of the inductors 5 a lateral, approximately spherical bulge 10 of the longitudinal walls 6" and thus increases there the volume of the coating metal 2 in the annular gap, and here to the Longitudinal sides of the metal strand 1.
  • a fifth embodiment of the invention is shown according to the Fig. 1 but in the form of a lateral feed of coating metal 2 '' into the guide channel 4 ''.
  • the supply takes place via two tubes 11, which in half Height H / 2 of the height H of the inductors 5 approximately horizontally in the guide channel 4 '"open and there increase the volume of the coating metal 2'" practically over the entire annular gap.
  • the advantageous effect of the lateral supply via the tubes 11 and their arrangement is the same as that of the Fig. 1 described funnel-like design and arrangement of the area 4a.

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)
EP06762230A 2005-07-01 2006-06-28 Vorrichtung zur schmelztauchbeschichtung eines metallstranges Not-in-force EP1915469B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005030766A DE102005030766A1 (de) 2005-07-01 2005-07-01 Vorrichtung zur Schmelztauchbeschichtung eines Metallstranges
PCT/EP2006/006236 WO2007003315A2 (de) 2005-07-01 2006-06-28 Vorrichtung zur schmelztauchbeschichtung eines metallstranges

Publications (2)

Publication Number Publication Date
EP1915469A2 EP1915469A2 (de) 2008-04-30
EP1915469B1 true EP1915469B1 (de) 2011-06-22

Family

ID=37545055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06762230A Not-in-force EP1915469B1 (de) 2005-07-01 2006-06-28 Vorrichtung zur schmelztauchbeschichtung eines metallstranges

Country Status (19)

Country Link
US (1) US20090272319A1 (ru)
EP (1) EP1915469B1 (ru)
JP (2) JP2008545062A (ru)
KR (1) KR101158335B1 (ru)
CN (1) CN101292056B (ru)
AR (1) AR054528A1 (ru)
AT (1) ATE513935T1 (ru)
AU (1) AU2006265440B2 (ru)
BR (1) BRPI0612891A2 (ru)
CA (1) CA2612870C (ru)
DE (1) DE102005030766A1 (ru)
MX (1) MX2007015750A (ru)
MY (1) MY145405A (ru)
RS (1) RS20070494A (ru)
RU (1) RU2374357C2 (ru)
TW (1) TWI391526B (ru)
UA (1) UA90323C2 (ru)
WO (1) WO2007003315A2 (ru)
ZA (1) ZA200711247B (ru)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005030766A1 (de) * 2005-07-01 2007-01-04 Sms Demag Ag Vorrichtung zur Schmelztauchbeschichtung eines Metallstranges
FR2905955B1 (fr) * 2006-09-18 2009-02-13 Vai Clecim Soc Par Actions Sim Dispositif de guidage d'une bande dans un bain liquide
US20100285239A1 (en) * 2007-08-22 2010-11-11 Holger Behrens Method of and hot-dip installation for stabilizing a strip guided between stripping dies of the hot-dip coating installation and provided with a coating

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Also Published As

Publication number Publication date
MX2007015750A (es) 2008-03-06
JP5680120B2 (ja) 2015-03-04
UA90323C2 (ru) 2010-04-26
RS20070494A (en) 2009-01-22
DE102005030766A1 (de) 2007-01-04
AU2006265440B2 (en) 2010-11-11
TWI391526B (zh) 2013-04-01
CN101292056A (zh) 2008-10-22
RU2374357C2 (ru) 2009-11-27
RU2008101898A (ru) 2009-07-27
CA2612870C (en) 2012-09-11
JP2008545062A (ja) 2008-12-11
ATE513935T1 (de) 2011-07-15
WO2007003315A3 (de) 2007-06-07
WO2007003315A2 (de) 2007-01-11
KR101158335B1 (ko) 2012-06-22
CN101292056B (zh) 2012-02-29
AU2006265440A2 (en) 2008-02-28
BRPI0612891A2 (pt) 2010-12-07
KR20080031728A (ko) 2008-04-10
EP1915469A2 (de) 2008-04-30
JP2013067868A (ja) 2013-04-18
ZA200711247B (en) 2008-12-31
MY145405A (en) 2012-02-15
AR054528A1 (es) 2007-06-27
US20090272319A1 (en) 2009-11-05
AU2006265440A1 (en) 2007-01-11
TW200710273A (en) 2007-03-16
CA2612870A1 (en) 2007-01-11

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