EP0564437A1 - Procédé pour galvaniser un feuillard et installation pour la mise en oeuvre de ce procédé - Google Patents
Procédé pour galvaniser un feuillard et installation pour la mise en oeuvre de ce procédé Download PDFInfo
- Publication number
- EP0564437A1 EP0564437A1 EP93890052A EP93890052A EP0564437A1 EP 0564437 A1 EP0564437 A1 EP 0564437A1 EP 93890052 A EP93890052 A EP 93890052A EP 93890052 A EP93890052 A EP 93890052A EP 0564437 A1 EP0564437 A1 EP 0564437A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- layer
- zinc
- heat treatment
- control
- 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
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000008569 process Effects 0.000 title claims abstract description 28
- 238000005246 galvanizing Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 74
- 239000011701 zinc Substances 0.000 claims abstract description 53
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 230000005855 radiation Effects 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 131
- 229910052742 iron Inorganic materials 0.000 claims description 37
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 238000005259 measurement Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000010924 continuous production Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract 1
- 235000010210 aluminium Nutrition 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000137 annealing Methods 0.000 description 4
- 238000005244 galvannealing Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 3
- 229910021328 Fe2Al5 Inorganic materials 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 238000012821 model calculation Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
- 238000009681 x-ray fluorescence measurement Methods 0.000 description 1
Images
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
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
Definitions
- the invention relates to a method for galvanizing a strip, in particular a steel strip, the strip being continuously coated with zinc in a continuous process either electrolytically with zinc or according to the hot-dip galvanizing process in a zinc bath with zinc, then to form a Zn-Fe layer of a heat treatment in a continuous furnace and further subjected to an on-line control of the zinc layer, the galvanizing process being controlled in dependence on the on-line control, and a plant for carrying out the method.
- the post-annealing process converts the pure zinc layer into a Zn-Fe layer by diffusing iron.
- a product with different mechanical properties e.g. toughness, hardness
- the Fe content can be measured on-line by appropriate measuring devices (for example by means of X-ray fluorescence, X-ray diffraction or similar methods), that is to say on-line, as described, for example, in EP-A-0 473 154, the measurement result generally about one Represents the mean of the Fe content over the thickness of the Zn-Fe layer.
- the object of the invention is to further develop the method described at the outset in such a way that a galvanized strip with a defined, fully reacted layer structure can be produced, it being possible to intervene directly and directly in the manufacturing process to ensure a uniform quality of the galvanized strip and the production of rejects is minimized.
- the method according to the invention should enable the automatic consideration of intended changes in process parameters as well as their unintentional changes, so that the manufacturing process is continuously optimized and without manual intervention.
- This object is achieved in that the radiation emission of the strip surface is measured during or after the heat treatment by means of at least one pyrometer and the through reaction at the point of the pyrometer by changing the as a manipulated variable depending on the purpose of determining a through reaction of the Zn-Fe layer Pyrometer display running control serving heating output of the continuous furnace is ensured.
- the procedure is such that the point from which the Zn-Fe layer has reacted is determined on the belt passage section by measurement by means of a plurality of pyrometers arranged one behind the other in the belt running direction, and by regulating the heating power of the continuous furnace this point on the belt passage section into a desired one and is brought into a position that acts as a benchmark.
- a value of the iron content of the Zn-Fe layer is determined as the reference variable, the actual value of the iron content of the Zn-Fe layer is compared with the reference variable and a control deviation is changed by means of a controller by changing the control variable serving heating power of the continuous furnace balanced.
- the temperature control in the continuous furnace has a decisive influence on the structure of the galvanized layer and therefore also the mechanical properties of the product, since the diffusion processes of the iron in the zinc layer (diffusion rate, iron content) depend on the temperature and the duration of the heat treatment in the continuous furnace.
- the control is preferably carried out in a closed control circuit with the aid of a computer which registers the control deviation and controls the heating power of the continuous furnace by means of control commands, the computer advantageously having the strip dimension, the basic material of the strip with regard to its chemical composition and / or structure, the zinc layer thickness, the composition of the zinc bath, such as its Al content, the belt speed and possibly other parameters such as the temperature of the belt at the inlet of the continuous furnace and the ambient temperature are taken into account.
- a preferred embodiment is characterized in that the heating power and thus the temperature within the Continuous furnace can be set differently in individual heating zones.
- the heating power in heating zones adjacent to one another in the direction of the bandwidth can be set differently.
- the heating power can advantageously be set differently in the heating zones lying one behind the other in the direction of the strip passage, as a result of which the heating-up speed of the strip or the holding time of the strip at a specific temperature can be varied in order to achieve optimum strip quality.
- the measurement of the radiation emission and / or the Fe content is expediently carried out at locations distributed over the bandwidth.
- a plurality of pyrometers arranged one behind the other in the strip running direction and coupled to the controller are provided.
- the controller is advantageously coupled to a process computer.
- a measuring device downstream of the heat treatment device for measuring the iron content of the zinc layer is expediently provided, which is coupled to a controller which is coupled via a control line to the heating device of the heat treatment device.
- FIG. 1 schematically illustrating a system for galvanizing a strip.
- the diagram shown in FIG. 2 shows the dependence of the iron content on the heating power.
- 3 shows a deviation of the iron content in the Zn-Fe layer as a function of the bandwidth
- FIG. 4 shows the dependence of the radiation emission on the holding time.
- a steel strip 1 to be galvanized is guided continuously by means of a strip guide device which has a plurality of strip guide rollers 2 along a strip path 3 from an unwinding station (not shown) to a also not shown winding station.
- the steel strip On the belt run 3, the steel strip first reaches a zinc coating device 4, which in the exemplary embodiment shown is designed as a hot-dip galvanizing device.
- This has a zinc bath 5 and a stripping device 7 arranged downstream in the strip running direction 6 to ensure a constant zinc layer which is of equal thickness over the bandwidth.
- the steel strip 1 is introduced via a hot-thickness measuring system 8 for measuring the thickness of the zinc layer and via a temperature measuring device 9 into a heat treatment device 13 having two continuous furnaces 10, 11. Heating takes place primarily in the first continuous furnace 10 of the galvanized steel strip 1 to the required annealing temperature. In the further continuous furnace 11 arranged subsequently, the steel strip 1 is primarily kept at a constant annealing temperature.
- the radiation emission of the completely annealed steel strip 1 is measured by means of a pyrometer 14. Cooling devices 15 are then arranged on the belt guide. At a point downstream of the heat treatment device 13 of the belt path 3, a measuring device 16 is also provided for measuring the iron content of the Zn-Fe layer, which, as indicated by the double arrow 17, can preferably be shifted over the bandwidth, so that the bandwidth can be varied at different points a measurement can be taken.
- the measuring device preferably works according to the X-ray method.
- a controller 19 coupled to a process computer 18 is coupled to heating devices of the two continuous furnaces 10, 11 for the purpose of setting the heating power, as illustrated by the double arrows 20.
- the aluminum dissolved in the zinc bath 5 initially forms an iron-aluminum layer (Fe2Al5) on the steel strip, which prevents a reaction of the iron substrate of the steel strip 1 and the zinc layer.
- This system (steel strip 1 + Fe-Al layer + liquid Zn layer) reaches the first continuous furnace 10 and is brought to a temperature of 450 ° C to 700 ° C.
- the steel strip 1 is kept at a certain temperature or heated even further. The process of diffusion of iron into the zinc layer that occurs converts the pure zinc layer into a zinc-iron layer.
- the Fe-Al barrier layer formed in the zinc bath is first broken up by the Zn-Fe growth at the grain boundaries of the base material, and a mushroom-shaped growth of the Zn-Fe complexes begins.
- different metallurgical phases are formed that have different properties.
- the phases become harder or more brittle with increasing iron content. With subsequent deformation (e.g. deep drawing), this can lead to increased abrasion, which makes the adhesion of the Zn-Fe layer very poor.
- the Zn-Fe layer has reacted completely, i.e. that the zinc forms a stable phase with the iron on the surface of the coated steel strip 1 due to the advance of the iron during the diffusion process.
- a radiation emission measurement using a pyrometer 14 can be used for evaluation the galvan-aged layer will.
- the pyrometer 14 can be arranged after or in the heat treatment device 13 (for example between the galvannealing furnace 10 and the holding furnace 11). This measurement is information about the radiation energy emitted purely from the surface of the steel strip 1, ie its Zn-Fe layer, which is a function of the temperature and the emission number of the surface condition.
- the emission number of a pure zinc surface is less than 0.2 and that of a fully reacted Fe-Zn surface is approximately 0.6.
- the heating power of the continuous furnaces 10, 11 is increased with the aid of the controller 19 connected to a process computer 18, to which the measured value of the pyrometer is input, until a complete reaction with the aid of the pyrometer is detectable.
- the heating power is the control variable of the control process.
- the heating power of the continuous furnaces 10, 11 is now regulated with the help of the controller 19 so that the through reaction is completed from a certain desired point.
- Another way of recognizing the point in the strip running direction at which the through reaction is completed is to compare the pyrometer measurement with a thermal model calculation.
- the pyrometer measurement is the empirically determined emissivity for the pure zinc layer and a second time the empirically determined emissivity of the fully reacted layer is used. In terms of calculations, this initially results in two pyrometer temperature values for the running belt that differ according to the different emission numbers.
- the iron content of the Fe-Zn layer is advantageously used in addition to determining and regulating the reaction through on-line X-ray fluorescence measurement with the aid of the measuring device 16 determined, preferably over the entire bandwidth and also over the entire band length.
- This actual value of the iron content of the Zn-Fe layer is determined with the help of the controller 19 with a value of the Iron content of the Zn-Fe layer compared.
- a possible control deviation is compensated for by the controller 19 by changing the heating output of the first and also the second continuous furnace 10, 11, which serves as a control variable. If, for example, the measured iron content is lower than the desired one, the heating output of the continuous furnace is increased until the control deviation becomes zero or has dropped below a predetermined value (dead band), as explained below with reference to FIG. 2:
- the course I indicates the relationship between the Fe content of the Zn-Fe layer and the heating power. This is determined empirically and e.g. made available to the control computer (controller 19) as a formula or as a table.
- the desired setpoint of the Fe content Fe 1 (point A) is achieved with the power setting P 1.
- the band behaves somewhat differently, e.g. according to course II, due to unintentional changes in process parameters, e.g. Drift of the ambient temperature, drift in the transformer output when the continuous furnaces are electrically heated or when other faults occur, this results in an Fe content Fe 2 on the strip which deviates from the set value Fe 1 (point B).
- the heating power is now changed, for example depending on the slope dP / dFe in point A 'of the course I, for example by the value k. dP dFe . ⁇ Fe
- the coating thickness has to be adjusted within narrow tolerances evenly over the bandwidth (known methods for layer thickness control). Despite the uniform layer thickness across the bandwidth, the causes 2) to 5) etc. cause an uneven Fe content across the bandwidth. The influence of uneven heat input into the steel strip 1 can e.g. lead to the Fe content shown in Fig. 3, although the coating thickness is uniform over the bandwidth.
- the uniformity of the Fe content over the bandwidth can be improved as well Full reaction across the entire range can be ensured.
- Desired changes in process parameters e.g. a change in the dimension of the steel strip 1, a change in the chemical composition of the steel strip 1, a change in the zinc layer thickness or a change in the conveying speed of the steel strip 1 are entered into the process computer 18 to take into account the heating power of the heat treatment device.
- the manipulated variables for the heat treatment device 13 are calculated by a computer of the controller 19 from the measured values and the target-actual deviation for the emissivity and possibly for the iron content.
- the measured values from the hot measurement (layer thickness measurement) and / or a temperature measurement arranged in front of the continuous furnace 10, the belt speed and the heating power supplied in the individual zones of the heat treatment device 13 can be used to increase the accuracy of the control process, as indicated by the arrows 20, 21 is indicated.
- the manipulated variables are calculated with the aid of a control model, which can vary depending on the measuring devices and actuating devices available in the specific system.
- the control model is described by model parameters. These model parameters can be different for different base material, strip dimension, Al content in the zinc bath. Base material, tape dimension, Al content in the zinc bath can be transferred from a higher-level computer (eg production planning computer) or an external input unit to the process computer 18. They can be transferred to the computer of controller 19 with the target value valid for the product to be manufactured, cf. Arrow 22.
- the computer of the controller 19 then calculates the corresponding control commands taking into account these model parameters of the control model.
- the total output or the performance of parts of the continuous furnaces 10, 11 can be set within certain limits. It is particularly advantageous if the distribution of the heat input onto the belt, that is to say the heating power of the continuous furnaces 10, 11, can also be adjusted within certain limits over the width, since this makes it possible to vary the deviation of the Fe shown in FIG. Compensate the content of the Zn-Fe layer, which can occur despite the uniform thickness of the Zn-Fe layer.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Coating With Molten Metal (AREA)
- Electroplating Methods And Accessories (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT653/92 | 1992-03-31 | ||
| AT0065392A AT397814B (de) | 1992-03-31 | 1992-03-31 | Verfahren zum verzinken eines bandes sowie anlage zur durchführung des verfahrens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0564437A1 true EP0564437A1 (fr) | 1993-10-06 |
| EP0564437B1 EP0564437B1 (fr) | 1995-09-20 |
Family
ID=3496268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93890052A Expired - Lifetime EP0564437B1 (fr) | 1992-03-31 | 1993-03-23 | Procédé pour galvaniser un feuillard et installation pour la mise en oeuvre de ce procédé |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0564437B1 (fr) |
| JP (1) | JPH06207296A (fr) |
| AT (2) | AT397814B (fr) |
| DE (1) | DE59300611D1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999015709A1 (fr) * | 1997-09-24 | 1999-04-01 | Voest-Alpine Industrieanlagenbau Gmbh | Methode de reglage du procede de trempage apres zingage |
| WO2001086017A1 (fr) * | 2000-05-05 | 2001-11-15 | Thyssen Krupp Stahl Ag | Procede et dispositif de galvanisation d'une bande d'acier |
| DE102009053368A1 (de) * | 2009-11-14 | 2011-05-19 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Fertigungsanlage zum Herstellen eines Blechformteils mit einer Korrosionsschutzbeschichtung |
| EP4116456A1 (fr) * | 2021-07-09 | 2023-01-11 | Matro GmbH | Procédé et installation de galvanisation de pièces en fer et en acier |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1298825B (de) * | 1963-09-03 | 1969-07-03 | Armco Steel Corp | Verfahren und Vorrichtung zur Erzeugung einer gleichfoermigen einphasigen auflegierten Zinkbeschichtung auf ein Metallband |
| FR2072946A5 (fr) * | 1969-12-05 | 1971-09-24 | British Steel Corp | |
| FR2563537A1 (fr) * | 1984-04-25 | 1985-10-31 | Stein Heurtey | Procede et dispositif de recuit de diffusion pour l'obtention de toles a revetement allie |
| JPH01252761A (ja) * | 1987-12-08 | 1989-10-09 | Kawasaki Steel Corp | 溶融亜鉛めっき用合金化炉の板温制御装置 |
| JPH0293056A (ja) * | 1988-09-29 | 1990-04-03 | Kawasaki Steel Corp | 溶融亜鉛めっき合金化炉の燃料制御方法 |
| JPH03146649A (ja) * | 1989-10-31 | 1991-06-21 | Kawasaki Steel Corp | 合金化亜鉛めっき鋼帯の製造方法 |
| EP0531963A1 (fr) * | 1991-09-10 | 1993-03-17 | Nippon Steel Corporation | Procédé de contrôle de l'échauffement d'un four de recuit pour la fabrication d'une bande d'acier galvanisée et alliée |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2904891B2 (ja) * | 1990-08-31 | 1999-06-14 | 日新製鋼株式会社 | 合金化亜鉛めつき鋼板のオンライン合金化度測定装置 |
-
1992
- 1992-03-31 AT AT0065392A patent/AT397814B/de not_active IP Right Cessation
-
1993
- 1993-03-23 AT AT93890052T patent/ATE128191T1/de active
- 1993-03-23 DE DE59300611T patent/DE59300611D1/de not_active Expired - Fee Related
- 1993-03-23 EP EP93890052A patent/EP0564437B1/fr not_active Expired - Lifetime
- 1993-03-31 JP JP5074662A patent/JPH06207296A/ja active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1298825B (de) * | 1963-09-03 | 1969-07-03 | Armco Steel Corp | Verfahren und Vorrichtung zur Erzeugung einer gleichfoermigen einphasigen auflegierten Zinkbeschichtung auf ein Metallband |
| FR2072946A5 (fr) * | 1969-12-05 | 1971-09-24 | British Steel Corp | |
| FR2563537A1 (fr) * | 1984-04-25 | 1985-10-31 | Stein Heurtey | Procede et dispositif de recuit de diffusion pour l'obtention de toles a revetement allie |
| JPH01252761A (ja) * | 1987-12-08 | 1989-10-09 | Kawasaki Steel Corp | 溶融亜鉛めっき用合金化炉の板温制御装置 |
| JPH0293056A (ja) * | 1988-09-29 | 1990-04-03 | Kawasaki Steel Corp | 溶融亜鉛めっき合金化炉の燃料制御方法 |
| JPH03146649A (ja) * | 1989-10-31 | 1991-06-21 | Kawasaki Steel Corp | 合金化亜鉛めっき鋼帯の製造方法 |
| EP0531963A1 (fr) * | 1991-09-10 | 1993-03-17 | Nippon Steel Corporation | Procédé de contrôle de l'échauffement d'un four de recuit pour la fabrication d'une bande d'acier galvanisée et alliée |
Non-Patent Citations (3)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 014, no. 007 (C - 673) * |
| PATENT ABSTRACTS OF JAPAN vol. 014, no. 294 (C - 732) 26 June 1990 (1990-06-26) * |
| PATENT ABSTRACTS OF JAPAN vol. 015, no. 369 (C - 868) 18 September 1991 (1991-09-18) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999015709A1 (fr) * | 1997-09-24 | 1999-04-01 | Voest-Alpine Industrieanlagenbau Gmbh | Methode de reglage du procede de trempage apres zingage |
| WO2001086017A1 (fr) * | 2000-05-05 | 2001-11-15 | Thyssen Krupp Stahl Ag | Procede et dispositif de galvanisation d'une bande d'acier |
| DE102009053368A1 (de) * | 2009-11-14 | 2011-05-19 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Fertigungsanlage zum Herstellen eines Blechformteils mit einer Korrosionsschutzbeschichtung |
| EP4116456A1 (fr) * | 2021-07-09 | 2023-01-11 | Matro GmbH | Procédé et installation de galvanisation de pièces en fer et en acier |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA65392A (de) | 1993-11-15 |
| ATE128191T1 (de) | 1995-10-15 |
| DE59300611D1 (de) | 1995-10-26 |
| AT397814B (de) | 1994-07-25 |
| JPH06207296A (ja) | 1994-07-26 |
| EP0564437B1 (fr) | 1995-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2044234B1 (fr) | Procédé de laminage flexible de bandes d'acier revêtues | |
| EP2010690B1 (fr) | Procédé de revêtement par immersion en fusion d'un produit plat en acier hyperrésistant | |
| DE3785661T2 (de) | Verfahren zur herstellung eines nichtalternden feuerverzinkten stahlbleches. | |
| EP2824216B1 (fr) | Procédé de fabrication d'un produit en acier plat pourvu, par revêtement par galvanisation à chaud, d'une couche de protection métallique et four à passage continu pour une installation de revêtement par galvanisation à chaud | |
| DE69914561T2 (de) | Verfahren und Vorrichtung zur Abdichtung in einem Durchlaufwärmebehandlungsofen | |
| DE102011056823A1 (de) | Düseneinrichtung für einen Ofen zum Wärmebehandeln eines Stahlflachprodukts und mit einer solchen Düseneinrichtung ausgestatteter Ofen | |
| DE2537298A1 (de) | Verfahren zur vorbehandlung eines unlegierten stahlband- und -blechmaterials vor dem flussmittelfreien tauchschmelzbeschichten | |
| EP0564437B1 (fr) | Procédé pour galvaniser un feuillard et installation pour la mise en oeuvre de ce procédé | |
| EP0571353B1 (fr) | Procédé pour galvaniser un feuillard et installation pour la mise en oeuvre de ce procédé | |
| DE102019200338A1 (de) | Verfahren für eine kontinuierliche Wärmebehandlung eines Stahlbands, und Anlage zum Schmelztauchbeschichten eines Stahlbands | |
| DE102004023886B4 (de) | Verfahren und Vorrichtung zur Veredelung von flexibel gewalztem Bandmaterial | |
| DE3033501C2 (fr) | ||
| DE69224596T2 (de) | Verfahren und Vorrichtung zur automatischen Steuerung von mit Strahlrohren beheizten Durchlauföfen | |
| WO1993018197A1 (fr) | Procede pour revetir de plusieurs couches un produit allonge | |
| DE69017600T2 (de) | Verfahren zur Schätzung der Pressverformbarkeit von nach dem Verzinken wärmebehandelten Stahlblechen mittels Röntgenbeugung. | |
| EP2807280B1 (fr) | Procédé d'affinement d'un revêtement métallique sur une bande d'acier | |
| DE2729931C3 (de) | Turmofen zur Wärmebehandlung von Walzblechen | |
| EP3512969A1 (fr) | Installation de traitement à chaud, flexible, pour une bande métallique dans une construction horizontale | |
| DE69723608T2 (de) | Primärkühlverfahren für das kontinuierliche Glühen von Stahlbändern | |
| DE102015001438A1 (de) | Flexible Wärmebehandlungsanlage für metalisches Band | |
| DE10021948B4 (de) | Verfahren und Anlage zum Verzinken eines Stahlbandes | |
| DE1521422C3 (de) | Verfahren zur kontinuierlichen Herstellung von mit einer Schutzschicht aus Metall, wie Zink, Aluminium und dergleichen, überzogenen Stahlbändern | |
| WO2020224983A1 (fr) | Procédé de traitement thermique d'un produit métallique | |
| DE2141906C3 (fr) | ||
| DE69500797T2 (de) | Verfahren zur Feuertauchbad-Aluminium eines Stahlbandes, enthaltend mindestens 0,1% Mangan, insbesondere rostfreies und/oder legiertes Stahl |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE DE ES FR GB IT LU NL SE |
|
| 17P | Request for examination filed |
Effective date: 19940331 |
|
| 17Q | First examination report despatched |
Effective date: 19950105 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE ES FR GB IT LU NL SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19950920 |
|
| REF | Corresponds to: |
Ref document number: 128191 Country of ref document: AT Date of ref document: 19951015 Kind code of ref document: T |
|
| REF | Corresponds to: |
Ref document number: 59300611 Country of ref document: DE Date of ref document: 19951026 |
|
| ITF | It: translation for a ep patent filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19951220 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19951215 |
|
| ET | Fr: translation filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19960323 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19960331 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050323 |
|
| PGRI | Patent reinstated in contracting state [announced from national office to epo] |
Ref country code: IT Effective date: 20080301 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20090518 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20100324 Year of fee payment: 18 Ref country code: FR Payment date: 20100325 Year of fee payment: 18 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20100311 Year of fee payment: 18 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20100303 Year of fee payment: 18 Ref country code: BE Payment date: 20100312 Year of fee payment: 18 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101001 |
|
| BERE | Be: lapsed |
Owner name: *VOEST-ALPINE STAHLINZ G.M.B.H. Effective date: 20110331 Owner name: *VOEST-ALPINE INDUSTRIEANLAGENBAU G.M.B.H. Effective date: 20110331 |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20111001 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20110323 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20111130 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110331 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20111001 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110331 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110323 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110323 |