EP1565590A2 - Method and device for hot-dip coating a metal strand - Google Patents
Method and device for hot-dip coating a metal strandInfo
- Publication number
- EP1565590A2 EP1565590A2 EP03772340A EP03772340A EP1565590A2 EP 1565590 A2 EP1565590 A2 EP 1565590A2 EP 03772340 A EP03772340 A EP 03772340A EP 03772340 A EP03772340 A EP 03772340A EP 1565590 A2 EP1565590 A2 EP 1565590A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal strand
- guide channel
- inductors
- metal
- additional coils
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 118
- 239000002184 metal Substances 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000003618 dip coating Methods 0.000 title claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 32
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 230000006698 induction Effects 0.000 claims description 23
- 230000005291 magnetic effect Effects 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 7
- 230000001939 inductive effect Effects 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000005294 ferromagnetic effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- 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
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- 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
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/12—Aluminium or alloys based thereon
-
- 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
-
- 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
- C23C2/50—Controlling or regulating the coating processes
- C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
Definitions
- the invention relates to a method for hot-dip coating a metal strand, in particular a steel strip, in which the metal strand is passed vertically through a container holding the molten coating metal and through an upstream guide channel, an electromagnetic field being used to hold back the coating metal in the region of the guide channel by means of at least two inductors arranged on both sides of the metal strand are produced and, in order to stabilize the metal strand in a central position in the guide channel, an electromagnetic field which is superimposed on the electromagnetic field of the inductors is generated by means of at least two additional coils arranged on both sides of the metal strand. Furthermore, the invention relates to a device for hot-dip coating a metal strand.
- the strips are introduced into the dip coating bath from above in a dip 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 must be redirected in the vertical direction in the coating vessel. This happens with a roller that runs in the liquid metal. Due to the liquid coating metal, this role is subject to heavy wear and is the cause of downtimes and thus failures in production.
- non-ferromagnetic metal strips are possible, but problems arise with the essentially ferromagnetic steel strips that they are drawn in the electromagnetic seals by the ferromagnetism to the channel walls and the strip surface is thereby damaged. Furthermore, it is problematic that the coating metal and the metal strip itself are heated inadmissibly by the inductive fields.
- the position of the continuous ferromagnetic steel strip through the guide channel between two traveling field inductors is an unstable equilibrium. Only in the middle of the guide channel is the sum of the magnetic attraction forces acting on the tape zero. As soon as the steel strip is deflected from its central position, it comes closer to one of the two inductors while it moves away from the other inductor. Such deflection can be caused by simple belt flatness errors. Any type of band waves in the running direction, seen across the width of the band (centerbuckles, quarterbuckles, edge waves, flutter, twisting, crossbow, S-shape, etc.) should be mentioned here. According to an exponential function, the magnetic induction, which is responsible for the magnetic attraction, decreases in its field strength with the distance from the inductor.
- the attraction decreases with the square of the induction field strength with increasing distance from the inductor.
- DE 195 35 854 A1 and DE 100 14 867 provide a solution to this problem, that is to say to precisely regulate the position of the metal strand in the guide channel A1 notices. According to the concepts disclosed there, it is provided that, in addition to the coils for generating the electromagnetic traveling field, additional additional coils are provided which are connected to a control system and ensure that the metal strip is brought back into it when it deviates from the central position.
- the invention is therefore based on the object of providing a method and an associated device for hot-dip coating a metal strand with which it is possible to overcome the disadvantages mentioned.
- the efficiency of the control should therefore be improved, which should make it easier to keep the metal strand in the middle of the guide channel.
- this object is achieved in that the central position of the metal strand in the guide channel is stabilized by the sequence of the following steps in a closed control loop:
- the concept of the invention is based on the fact that the three sizes position of the metal strand in the guide channel, induction current in the inductors and induction current in the additional coils are recorded and taken into account when regulating the position of the metal strand; the manipulated variable of the control loop is then the induction current in the additional coils.
- the electromagnetic field generated for sealing is a multi-phase traveling field, which is generated by applying an alternating current with a frequency between 2 Hz and 2 kHz.
- a single-phase alternating field can also be provided, which is generated by applying an alternating current with a frequency between 2 kHz and 10 kHz.
- the position of the metal strand in the guide channel is particularly preferably determined inductively.
- the position is determined in an area of the guide channel in which there is no or only a weakened effect of the magnetic field of the inductors and / or the magnetic field of the Additional coils are present. Alternatively, however, it is also possible for this determination to be carried out in an area of the guide channel in which there is an effect of these magnetic fields.
- the measuring means (the measuring coils) for determining the position of the metal strand is therefore within or outside the range of the electromagnetic elements, which includes both the inductor and the additional coils.
- the measuring device is arranged in the area of the extent of the inductor in front of the additional coil, that the measuring device is arranged in the area of the extent of the inductor next to the additional coil, or that the measuring device is arranged outside the area of the extent of the inductor. Combinations of these arrangements are also possible.
- the field for stabilizing the metal strand in a central position in the guide channel is characterized by measuring means for measuring the position of the metal strand in the guide channel, the induction current in the inductors and the induction current in the additional coils, and by regulating means for controlling the induction current in the additional coils in Depending on the measured parameters are suitable to keep the metal strand in a central position in the guide channel.
- the measuring device for detecting the position of the metal strand in the guide channel is advantageously an inductive sensor. Furthermore, it can be provided that the measuring means for detecting the position of the metal strand in the guide channel, viewed in the conveying direction of the metal strand, is arranged within the extent of the inductors. However, it is equally possible for the measuring means to be arranged outside the extent of the inductors. In both cases, it is possible for the measuring means for the detection of the position of the metal strand in the guide channel in the conveying direction of the metal strand to be arranged outside the extension of the additional coils. This ensures an exact position detection of the metal strand.
- a further development provides that several measuring devices for detecting the position of the metal strand in the guide channel are arranged at different points in the conveying direction of the metal strand.
- the individual measuring devices can be arranged both inside and outside the magnetic fields of the inductor or additional coil.
- FIG. 1 An embodiment of the invention is shown.
- the single figure shows schematically a hot-dip coating device with a metal strand passed through it.
- the device has a container 3 which is filled with molten coating metal 2.
- molten coating metal 2 This can be zinc or aluminum, for example.
- the metal strand 1 to be coated in the form of a steel strip passes the container 3 vertically upwards in the conveying direction R. It should be noted at this point that it is fundamentally also possible for the metal strand 1 to pass the container 3 from top to bottom. For the passage of the metal strand 1 through the container 3, it is open in the bottom area; here is an exaggeratedly large or wide guide channel 4.
- the inductors 5 are two alternating field or traveling field inductors arranged opposite one another, which are operated in the frequency range from 2 Hz to 10 kHz and build up an electromagnetic transverse field perpendicular to the conveying direction R.
- the preferred frequency range for single-phase systems (AC field inductors) is between 2 kHz and 10 kHz, that for multi-phase systems (e.g. traveling field inductors) between 2 Hz and 2 kHz.
- the aim is to hold the metal strand 1 located in the guide channel 4 in such a way that it is as defined as possible in a position, preferably in the center plane 11 of the guide channel 4.
- the metal strand 1 located between the two opposing inductors 5 is generally attracted to the closer inductor when an electromagnetic field is applied between the inductors 5, the attraction growing with the approach of an inductor, which leads to a highly unstable band center position. This gives rise to the problem during operation of the device that the metal strand 1 cannot run freely and centrally through the guide channel 4 between the activated inductors due to the attractive force of the inductors 5.
- additional coils 6 are therefore arranged on both sides of the guide channel 4 or the metal strand 1. These are controlled by a control means 10 such that the superimposition of the magnetic fields of the inductors 5 and the additional coils 6 always holds the metal strand 1 in the center of the guide channel 4.
- the magnetic field of the inductors 5 can be strengthened or weakened depending on the control (superposition principle) without violating the sealing condition (minimum required field strength for the sealing). In this way, the position of the metal strand 1 in the guide channel 4 can be influenced.
- control means 10 are initially supplied with a signal s, s' or s "which reproduces the position of the metal strand 1 in the guide channel 4.
- the position s, s' or s" is determined by position measuring means 7, 7 'or 7 ", which are inductive displacement sensors.
- the position of the metal strand 1 between the inductors 5 in the electromagnetic field is thus determined inductively, the feedback effect of the metal strand 1 being used in the magnetic field.
- the regulating means 10 are furthermore connected to the induction currents in the inductors 5 - current I
- Algorithms are stored in the control means 10 which, based on the three parameters position s, s' and s "of the metal strand 1 in the guide channel , induction current lin d in the inductors 5 and induction current IK O ⁇ - in the additional coils 6 a new control signal in the form of a Deliver induction current l ⁇ o rr to the additional coils 6.
- the position of the metal strand 1 in the closed control loop is held in such a way that the positional deviations of the metal strand 1 from the center plane 11 are minimal, ie that the value s, s' or s " becomes zero if possible.
- the position s, s 'or s "of the metal strand 1 in the guide channel 4 is determined by means of the position measuring means 7, 7' or 7", the position measuring means 7 - viewed in the conveying direction R - above the inductors 5 , the position measuring means 7 'are positioned below the inductors 5 and the position measuring means 7 "in the area of the inductors 5.
- all three position measuring means 7, 7' and 7" are arranged outside the area of the additional coils 6. From the By means of the position measuring means 7, 7 ', 7 "measured values, an average value can be formed in the control means 10.
- the position measuring means 7, T and 7 are inductive displacement transducers, the influence of the magnetic fields caused by the inductors 5 and the additional coils 6 should remain as small as possible. This is due to the arrangement of the position measuring means 7 and 7 'is ensured outside the extent of the inductors 5. However, as can be seen in the figure, a position measuring means (in the present case 7 ”) can be positioned in the region of the inductors 5.
- position measuring means 7 or 7 has proven itself outside the effect of the additional coils 6, they can in principle also be arranged in the effective range of the inductors 5 or the additional coils 6.
- control means 1 1 middle level
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10255994 | 2002-11-30 | ||
DE10255994A DE10255994A1 (en) | 2002-11-30 | 2002-11-30 | Method and device for hot-dip coating a metal strand |
PCT/EP2003/012792 WO2004050940A2 (en) | 2002-11-30 | 2003-11-15 | Method and device for hot-dip coating a metal strand |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1565590A2 true EP1565590A2 (en) | 2005-08-24 |
EP1565590B1 EP1565590B1 (en) | 2006-04-26 |
Family
ID=32308876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03772340A Expired - Lifetime EP1565590B1 (en) | 2002-11-30 | 2003-11-15 | Method and device for hot-dip coating a metal strand |
Country Status (21)
Country | Link |
---|---|
US (2) | US7662438B2 (en) |
EP (1) | EP1565590B1 (en) |
JP (1) | JP4431050B2 (en) |
KR (1) | KR101013916B1 (en) |
CN (1) | CN1717505B (en) |
AT (1) | ATE324472T1 (en) |
AU (1) | AU2003279393B8 (en) |
BR (1) | BR0316814B1 (en) |
CA (1) | CA2509219C (en) |
DE (2) | DE10255994A1 (en) |
EG (1) | EG23676A (en) |
ES (1) | ES2260666T3 (en) |
MX (1) | MXPA05005724A (en) |
MY (1) | MY135134A (en) |
PL (1) | PL208243B1 (en) |
RS (1) | RS50774B (en) |
RU (1) | RU2329332C2 (en) |
TW (1) | TW200417625A (en) |
UA (1) | UA79175C2 (en) |
WO (1) | WO2004050940A2 (en) |
ZA (1) | ZA200502990B (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10255994A1 (en) * | 2002-11-30 | 2004-06-09 | Sms Demag Ag | Method and device for hot-dip coating a metal strand |
WO2004076707A1 (en) * | 2003-02-27 | 2004-09-10 | Sms Demag Aktiengesellschaft | Method and device for melt dip coating metal strips, especially steel strips |
DE10312939A1 (en) * | 2003-02-27 | 2004-09-09 | Sms Demag Ag | Method and device for hot-dip coating of metal strips, in particular steel strips |
DE102005014878A1 (en) * | 2005-03-30 | 2006-10-05 | Sms Demag Ag | Method and apparatus for hot dip coating a metal strip |
ITMI20071164A1 (en) * | 2007-06-08 | 2008-12-09 | Danieli Off Mecc | METHOD AND DEVICE FOR THE CONTROL OF THE COATING THICKNESS OF A METAL METAL PRODUCT |
JP5211642B2 (en) * | 2007-10-31 | 2013-06-12 | Jfeスチール株式会社 | Production equipment for hot dip galvanized steel sheet and method for producing hot dip galvanized steel sheet |
JP5263433B2 (en) * | 2011-08-09 | 2013-08-14 | Jfeスチール株式会社 | Metal strip stabilizer and hot-plated metal strip manufacturing method |
DE102018215100A1 (en) | 2018-05-28 | 2019-11-28 | Sms Group Gmbh | Vacuum coating apparatus, and method for coating a belt-shaped material |
CN112095063A (en) * | 2020-09-30 | 2020-12-18 | 成都航空职业技术学院 | Titanium alloy surface coating and preparation method thereof |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0660374B2 (en) | 1987-09-29 | 1994-08-10 | 川崎製鉄株式会社 | Anti-vibration device for steel strip in steel strip processing line |
JP3111508B2 (en) | 1991-07-04 | 2000-11-27 | 栗田工業株式会社 | Treatment method for wastewater containing heavy metals |
JPH0578802A (en) * | 1991-09-26 | 1993-03-30 | Nkk Corp | Hot dip metal coating method of metallic strip |
JPH0586446A (en) | 1991-09-26 | 1993-04-06 | Nkk Corp | Hot dip coating method for metallic strip |
DE4242380A1 (en) | 1992-12-08 | 1994-06-09 | Mannesmann Ag | Method and device for coating the surface of strand-like material |
CA2131059C (en) | 1993-09-08 | 2001-10-30 | William A. Carter | Hot dip coating method and apparatus |
IN191638B (en) | 1994-07-28 | 2003-12-06 | Bhp Steel Jla Pty Ltd | |
US6106620A (en) * | 1995-07-26 | 2000-08-22 | Bhp Steel (Jla) Pty Ltd. | Electro-magnetic plugging means for hot dip coating pot |
DE19535854C2 (en) | 1995-09-18 | 1997-12-11 | Mannesmann Ag | Process for strip stabilization in a plant for coating strip-like material |
JPH1046310A (en) | 1996-07-26 | 1998-02-17 | Nisshin Steel Co Ltd | Hot dip coating method without using sinkroll and coating device |
US5708095A (en) * | 1996-08-30 | 1998-01-13 | E. I. Du Pont De Nemours And Company | Graft copolymers containing sulfonate and phosphonate groups having particular utility as pigmented ink dispersants |
CA2225537C (en) | 1996-12-27 | 2001-05-15 | Mitsubishi Heavy Industries, Ltd. | Hot dip coating apparatus and method |
JPH10298727A (en) | 1997-04-23 | 1998-11-10 | Nkk Corp | Vibration and shape controller for steel sheet |
US6037011A (en) * | 1997-11-04 | 2000-03-14 | Inland Steel Company | Hot dip coating employing a plug of chilled coating metal |
JP2000053295A (en) * | 1998-08-12 | 2000-02-22 | Nkk Corp | Vibration suppressing device for steel strip |
DE10014867A1 (en) | 2000-03-24 | 2001-09-27 | Sms Demag Ag | Process for the hot dip galvanizing of steel strips comprises continuously correcting the electrochemical field vertically to the surface of the strip to stabilize a middle |
SE0002890D0 (en) * | 2000-08-11 | 2000-08-11 | Po Hang Iron & Steel | A method for controlling the thickness of a galvanizing coating on a metallic object |
DE10255994A1 (en) * | 2002-11-30 | 2004-06-09 | Sms Demag Ag | Method and device for hot-dip coating a metal strand |
-
2002
- 2002-11-30 DE DE10255994A patent/DE10255994A1/en not_active Withdrawn
-
2003
- 2003-11-11 TW TW092131445A patent/TW200417625A/en not_active IP Right Cessation
- 2003-11-15 RU RU2005120687/02A patent/RU2329332C2/en not_active IP Right Cessation
- 2003-11-15 AT AT03772340T patent/ATE324472T1/en active
- 2003-11-15 KR KR1020057009604A patent/KR101013916B1/en not_active IP Right Cessation
- 2003-11-15 CA CA2509219A patent/CA2509219C/en not_active Expired - Fee Related
- 2003-11-15 AU AU2003279393A patent/AU2003279393B8/en not_active Ceased
- 2003-11-15 PL PL375556A patent/PL208243B1/en unknown
- 2003-11-15 JP JP2004556145A patent/JP4431050B2/en not_active Expired - Fee Related
- 2003-11-15 EP EP03772340A patent/EP1565590B1/en not_active Expired - Lifetime
- 2003-11-15 RS YUP-2005/0412A patent/RS50774B/en unknown
- 2003-11-15 US US10/536,872 patent/US7662438B2/en not_active Expired - Fee Related
- 2003-11-15 DE DE50303140T patent/DE50303140D1/en not_active Expired - Lifetime
- 2003-11-15 UA UAA200506371A patent/UA79175C2/en unknown
- 2003-11-15 MX MXPA05005724A patent/MXPA05005724A/en active IP Right Grant
- 2003-11-15 CN CN2003801045851A patent/CN1717505B/en not_active Expired - Fee Related
- 2003-11-15 ES ES03772340T patent/ES2260666T3/en not_active Expired - Lifetime
- 2003-11-15 WO PCT/EP2003/012792 patent/WO2004050940A2/en active IP Right Grant
- 2003-11-15 BR BRPI0316814-0A patent/BR0316814B1/en not_active IP Right Cessation
- 2003-11-24 MY MYPI20034525A patent/MY135134A/en unknown
-
2005
- 2005-04-13 ZA ZA200502990A patent/ZA200502990B/en unknown
- 2005-05-29 EG EGNA2005000263 patent/EG23676A/en active
-
2009
- 2009-10-24 US US12/589,480 patent/US20100112238A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2004050940A2 * |
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