WO2004009863A1 - 光沢保持性の良好な溶融Zn基めっき鋼板およびその製造法 - Google Patents
光沢保持性の良好な溶融Zn基めっき鋼板およびその製造法 Download PDFInfo
- Publication number
- WO2004009863A1 WO2004009863A1 PCT/JP2002/007485 JP0207485W WO2004009863A1 WO 2004009863 A1 WO2004009863 A1 WO 2004009863A1 JP 0207485 W JP0207485 W JP 0207485W WO 2004009863 A1 WO2004009863 A1 WO 2004009863A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- steel sheet
- mass
- plating
- hot
- Prior art date
Links
- 230000014759 maintenance of location Effects 0.000 title claims abstract description 19
- 229910001335 Galvanized steel Inorganic materials 0.000 title claims description 14
- 239000008397 galvanized steel Substances 0.000 title claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 131
- 238000007747 plating Methods 0.000 claims abstract description 113
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 71
- 239000010959 steel Substances 0.000 claims abstract description 71
- 239000000463 material Substances 0.000 claims abstract description 56
- 230000006866 deterioration Effects 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 238000010791 quenching Methods 0.000 claims description 62
- 239000010410 layer Substances 0.000 claims description 57
- 230000005496 eutectics Effects 0.000 claims description 15
- 238000007711 solidification Methods 0.000 claims description 15
- 230000008023 solidification Effects 0.000 claims description 15
- 239000013078 crystal Substances 0.000 claims description 14
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 14
- 239000012535 impurity Substances 0.000 claims description 13
- 229910052710 silicon Inorganic materials 0.000 claims description 13
- 229910052726 zirconium Inorganic materials 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 229910052727 yttrium Inorganic materials 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000002344 surface layer Substances 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 7
- 230000004927 fusion Effects 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 abstract description 53
- 238000000034 method Methods 0.000 abstract description 16
- 229910052749 magnesium Inorganic materials 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 230000001629 suppression Effects 0.000 abstract description 3
- 229910018134 Al-Mg Inorganic materials 0.000 abstract 2
- 229910018467 Al—Mg Inorganic materials 0.000 abstract 2
- 230000015271 coagulation Effects 0.000 abstract 1
- 238000005345 coagulation Methods 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 description 74
- 239000011701 zinc Substances 0.000 description 43
- 239000007921 spray Substances 0.000 description 14
- 230000007797 corrosion Effects 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000003595 mist Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229910000521 B alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003788 bath preparation Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007739 conversion coating Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- SQTLECAKIMBJGK-UHFFFAOYSA-I potassium;titanium(4+);pentafluoride Chemical compound [F-].[F-].[F-].[F-].[F-].[K+].[Ti+4] SQTLECAKIMBJGK-UHFFFAOYSA-I 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- OMQSJNWFFJOIMO-UHFFFAOYSA-J zirconium tetrafluoride Chemical compound F[Zr](F)(F)F OMQSJNWFFJOIMO-UHFFFAOYSA-J 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
- C22C18/04—Alloys based on zinc with aluminium as the next major constituent
-
- 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
- C23C2/14—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
- C23C2/26—After-treatment
Definitions
- the present invention relates to a technology for preventing surface gloss deterioration which may occur when manufacturing molten Zn-A1-Mg-based steel sheet in a continuous melting plating line.
- a plating bath to produce a molten Z n groups plated steel sheet, the plated layer, [a 1 / Z n / Z n 2 M g ternary eutectic structure] [primary crystal a 1 in the matrix of Phase) and a [Zn single phase] mixed metallographic structure can provide a coated steel sheet with sufficient corrosion resistance and surface appearance as an industrial product.
- the manufacturing conditions for obtaining this metallic structure are also described in the official gazette.
- molten Zn-based sheet containing relatively large amounts of A1 and Mg can be plated within 2-3 days, depending on the manufacturing conditions. It was experienced that the surface gloss of the layer deteriorated.
- “deterioration of the surface gloss of the plating layer” means that the plating surface immediately after production has a beautiful metallic luster, but over time (2 to 3 days at the earliest, 4 to 7 in some cases). Discolored to a color similar to a slightly dark buffer color The degree of discoloration (a kind of blackening phenomenon) of the extreme surface layer can be quantified by measuring “brightness”.
- an object of the present invention is to find a means capable of suppressing the deterioration of the surface gloss, which is peculiar to the molten Zn-A1-Mg-based steel sheet. Disclosure of the invention
- the present inventors have conducted various tests and studies to solve the above-mentioned problems.
- the deterioration of the surface gloss of the hot-dip galvanized steel sheet was reduced by water cooling in the cooling process after plating.
- it is necessary to control the “contact temperature between the plating layer and the water flow” during the water cooling process after solidification of the plating layer. Therefore, it is effective to properly control the “material temperature when it comes into contact with the water stream”.
- it found that it was effective to stabilize the oxidation state of A1 and Mg on the plating surface layer by adding a small amount of an appropriate “oxidizable element” to the plating bath.
- the material temperature at the time of contact with the water flow means the material temperature at the time of cooling while forming a water film on the plating layer surface in the cooling process after solidification of the plating layer, and more specifically.
- the plating layer surface after solidification is completed is brought into contact with a water flow (plating).
- a water flow plating
- the water quench zone is continuously cooled, the water quench zone is It was found that by controlling the material temperature on the inlet side to less than 105 ° C, the deterioration of the surface gloss of the plating layer as described above can be suppressed.
- the material temperature at the entrance to the water quench zone depends on the sheet thickness, although it depends on the equipment conditions. When the plate thickness is large, the material temperature at the entrance to the water quench zone is controlled to less than 105 ° C. Sometimes that is not always easy. In this case, an oxidizable element having a very high affinity for oxygen and an element having a stabilizing effect on A1 oxide, for example, a rare earth element, Y, Zr, Si, or the like, is used as the plating bath. If a small amount is added to the inside (actually, if it is added in the range of about 0.02 to 0.05% by mass), the temperature of the material entering the water quench zone should be less than 105 ° C. It was also found that the deterioration of the surface gloss can be similarly suppressed without lowering the temperature to above (even at 105 ° C or higher).
- a molten Zn-based bath containing 4.0 to 15% by mass of 81 and 1.0 to 4.0% by mass of Mg in the Zn bath is used.
- the plating layer surface after solidification is passed through a water quench zone, which is cooled with water while being in contact with the water flow.
- a zinc-coated steel sheet with good gloss retention characterized by controlling the temperature of the material entering the water quench zone to less than 105 ° C to suppress the deterioration of the plating layer gloss. And a method for producing the same.
- This molten Zn-based bath is preferably in mass%, A1: 4.0-15%, Mg: 1.0-4.0%, Ti: 0.001-0.1%, B: 0.00%. 1 to 0.045%, balance: Zn and unavoidable impurities.
- a bath containing a molten Zn containing 4.0 to 15% by mass of 1 and 1.0 to 4.0% by mass of 0 Mg in a Zn bath contains rare earth elements, Y, Zr or Si.
- the surface of the plating layer after solidification is completed is subjected to water flow.
- the plate is continuously passed through the water quench zone, which is water-cooled while contacting with water, by controlling the temperature of the material entering the water quench zone from 105 ° C or more to 300 ° C or less.
- This molten Zn-based bath is preferably in mass%, A1: 4.0 to 15 Mg: 1.0 to 4.0%, Ti: 0.001 to 0.1%, B: 0.001 to 1%. 0.045%, rare earth elements, Y,
- the present invention As a molten Zn-based steel sheet obtained by such a manufacturing method, the present invention
- the present invention provides a hot-dip Zn-plated steel sheet with good gloss retention, obtained by hot-dip coating a copper band using a hot-dip bath containing Zn and unavoidable impurities. Is this plated layer is mixed is in the matrix of [A 1 / Z n / Z n 2 Mg ternary eutectic structure] [primary crystal A 1-phase] or a [primary crystal A 1-phase] [Z [n phase] and / or [Zn 2 Mg phase] are mixed.
- Fig. 1 is a plating line diagram showing an outline of an example of equipment for producing a magnesium-containing hot-dip galvanized steel sheet according to the present invention. Preferred embodiments of the invention
- steel strip is used in principle in the description of the fusion plating line
- the term “steel sheet” is used in the description as a product.
- the characteristics are the same for both steel strip and steel sheet. is there.
- Fig. 1 shows an outline of the equipment for producing a molten Zn-plated steel sheet.
- the steel strip 2 maintained at a predetermined temperature after passing through the furnace 1 is continuously fed into the plating bath 3, and after leaving the plating bath 3, the amount of adhesion is adjusted by the wiping nozzle 4.
- the solidification of the plating layer is completed while passing through the cooler 15.
- chromate treatment after passing through a tension leveler 9, it is treated by a roll coater 11, passed through a drying zone 12 and an air cooling zone 13, and taken up on a tension reel 10a.
- Mg-containing hot-dip Zn-coated steel sheets the surface properties From this point, it is important to properly control the cooling rate and the solidification completion position until the plating layer solidification is completed. For this reason, the material temperature at the time of passing through the air jet cooler 5 depends on the sheet passing speed and sheet thickness. It must be strictly controlled.
- the material temperature on the skin pass inlet side is reduced by cooling in the steam-water cooling zone 6 (and the gas cooling zone 14) and the water quench zone 7 so that the temper rolling in the skin pass 8 can be performed appropriately.
- the cooling load in these cooling zones fluctuates in relation to the strip speed and the strip thickness.
- water or aqueous solution is sprayed in the air-water cooling zone, air jet is supplied in the gas cooling zone, and sufficient water flow is generated to temporarily form a water film on the plating layer surface in the water quench zone.
- the gloss maintenance performance of the plating surface was different depending on the temperature of the material entering the water quench zone. If the temperature is higher than 105 ° C, the above-mentioned phenomenon that the surface gloss deteriorates is likely to occur. Although the cause is not always clear, if the material temperature at the time of entering the water quench zone is 100 ° C or more, a certain kind of boiling phenomenon may occur while a water film is formed on the plating layer surface.
- the plating layer surface is so highly reactive, the behavior of a 1 in the presence of water under atmospheric pressure, as a boundary about 1 1 0 ° C, ⁇ 1 2 0 at higher 3 ⁇ H 20 (or A100H) compound is stable, It Hereinafter ⁇ 1 2 0 3 ⁇ 3H 2 0 ( or A1 (0H) 3) that either we compound is stable, A 1 compounds produced in the plating layer surface of the water Kuen Chi band by said input-side material temperature is different It is presumed that such things are involved.
- the cooling operation before entering the water quench zone is not water supply such that a water film is formed, as in the water quench zone, but supplied to the surface where solidification has been completed, and quenching is performed. It is necessary to perform light cooling operations such as (mist spray) and gas cooling (for example, air jet cooler).
- Performing a quenching operation to form a water film before entering the water quench zone, as in the water quench zone, would make the material temperature entering the water quench zone less than 105 ° C. Because there is no. Although it depends on the sheet thickness and the sheet passing speed, it is possible to keep the material temperature on the inlet side to the quench zone below 105 ° C even with steam cooling.
- the plate thickness when the plate thickness is large, it may not be possible to keep the temperature of the material entering the water quench zone below 105 ° C. Even if the plate thickness is large, reducing the passing speed can increase the amount of cooling in the steam-water cooling zone, but this is not advisable because it causes problems in freezing point control and lowers productivity.
- the plating surface immediately after the completion of solidification has a strong affinity for oxygen and is likely to have a stabilizing effect on A1 oxide. If an oxidizing element, for example, a rare earth element, Y, Zr, Si, etc. is present in an appropriate amount, even if the temperature of the material entering the water quench zone is 105 ° C or more, the following procedure is performed. As shown in the example, the surface gloss deterioration can be effectively suppressed. Other than the rare earth elements, ⁇ , Zr, and Si, there may be other elements that have the same effect, but at present these are unknown.
- These easily oxidizable elements have the property of concentrating in the outermost surface layer of the coating layer during or after the coating layer of the Mg-containing hot-dip Zn coated steel sheet solidifies.
- a relatively high concentration can be present on the outermost surface of the plating layer, which means that the surface in the water quench zone, which has an adverse effect on the surface gloss maintenance, can be found. It is thought to suppress the reaction.
- the amount of these easily oxidizable elements added to the plating bath is less than 0.02% by mass, the suppression effect cannot be exerted, so that the content in the plating bath composition is limited to 0.000. It is necessary to add it so that it becomes 2% by mass or more.
- the content in the plating bath is 0.10% by mass or less, in some cases 0.08% by mass or less, preferably 0.05% by mass or less, more preferably It may be added in an amount of 0.3% by mass.
- an oxidizable element acts most efficiently to prevent surface gloss deterioration when the material temperature on the inlet side of the water quench zone is 105 ° C or higher. Even when the inlet material temperature is below 105 ° C, these oxidizable elements can be added to the plating bath for safety reasons.
- the cooling load in the water quench zone increases if the material temperature on the inlet side of the water quench zone exceeds 300 ° C, even if it exceeds 105 ° C. Too low and the skin pass inlet temperature is low enough Therefore, it is preferable to control the temperature to 300 ° C. or less.
- the plate thickness is less than 1.6 mm, it is relatively easy to reduce the temperature of the material entering the water quench zone to less than 105 ° C, thereby maintaining gloss. Nature can be secured.
- gloss retention is maintained by adding an easily oxidizable element, rather than forcibly cooling the inlet material temperature of the water quench zone to less than 105 ° C. It is preferable to secure it for practical operation.
- the present invention has succeeded in preventing the surface gloss deterioration of the Mg-containing hot-dip galvanized steel sheet in this way, and is therefore intended for the Mg-containing hot-dip galvanized steel sheet that causes the surface gloss deterioration. Things.
- Such Mg-containing hot-dip galvanized steel sheets are typically based on A1: 4.0 to 10%, Mg: 1.0 to 4.0% by mass, and Ti: 0.001 to 1%. 0.1%, B: 0.0 0 1-0.0 45%, with the balance being Zn and unavoidable impurities, using a molten Zn-based plating bath.
- ⁇ ⁇ Z n 2 or in the matrix of the ternary eutectic structure] in the Mg is [primary crystal a 1-phase] mixed, or [primary crystal a 1-phase] and [Z n phase] and / or [Zn 2 Mg Phase), a hot-dip Zn_A1-Mg coated steel sheet with excellent corrosion resistance and surface appearance.
- the [A 1 / Z nZZ n 2 Mg The total amount of the ternary eutectic structure] + [primary crystal A1 phase] is preferably at least 80% by volume, particularly preferably at least 95% by volume.
- Si when Si is added, a small amount of [Si phase], [Mg 2 S i phase], [Al / Mg 2 S i binary eutectic] etc. may be present. I don't care.
- At least one oxidizable element selected from rare earth elements, Y, Zr or Si: 0.002 to 0.05%,
- the present invention provides a molten Zn-based plated steel sheet having excellent gloss retention, in which a steel strip is subjected to fusion plating using a fusion plating bath composed of: Its plated layers, whether in the matrix of [A 1 / Z n ZZ n 2 ternary eutectic structure of Mg] is [primary crystal A 1-phase] mixed, or [primary crystal A 1-phase] [Zn phase] and Z or [Zn 2 Mg phase] has a metal structure which Mashimashi mixed, also, the outermost surface layer portion of the plated layer tissue that easily oxidizable elements of the are concentrated Characteristic.
- the addition amounts of A 1, Mg, T i, B and the like constituting the plating bath composition and their effects are also exhibited in the case where the oxidizable element is added according to the present invention.
- the metal structure of the plating layer is a Zn 2 Mg-based ternary eutectic metal structure as described above, the effect of suppressing the formation and growth of the Zn nMg 2 phase, which adversely affects the appearance and corrosion resistance, is considered. Its addition is beneficial.
- Ti, B or Ti_B alloy or compound is added to the bath to obtain this effect, the content in the bath is Ti: 0.001 to 0.1%, B: 0.0%. What is necessary is just to add so that it may become 0 1-0.045%. If it is contained more than this, precipitates will grow in the plating layer, and the plating layer will have irregularities (corresponding to what is called “bud” in the field term), which may damage the appearance.
- A1 in the plating layer provides an effect of improving the corrosion resistance of the plated steel sheet and suppressing dross generation during the production of the plated steel sheet. If the A1 content is less than 1.0% by mass, the effect of improving corrosion resistance is not sufficient, and dross of Mg oxide is generated. The effect of suppressing is also low. Preferably, A1 is 4.0% by mass or more. On the other hand, when the A1 content exceeds 15% by mass, the Fe-A1 alloy layer grows remarkably at the interface between the plating layer and the base steel sheet, and the plating adhesion deteriorates.
- the preferred A1 content is 4.5 to 13.0% by mass, the more preferred A1 content is 5.0 to 10.0% by mass, and the more preferred A1 content is 5.0 to 7.0% by mass. %.
- Mg in the coating layer has the effect of generating uniform corrosion products on the coating layer surface and significantly increasing the corrosion resistance of the coated steel sheet.
- the Mg content is less than 1.0% by mass, the effect of uniformly producing such corrosion products is not sufficient.
- the Mg content exceeds 4.0% by mass, the corrosion resistance due to Mg is not sufficient. Since the effect of improvement is saturated and Mg oxide-based dross is more likely to be generated, the Mg content is preferably set to 1.0 to 4.0% by mass.
- the preferred Mg content is 1.5 to 4.0% by mass, the more preferred Mg content is 2.0 to 3.5% by mass, and the more preferred Mg content is 2.5 to 3.5% by mass. is there.
- the material temperature on the inlet side to the water quench zone is set to 1 in the same manner as in the above-mentioned production method of the Mg-containing hot-dip galvanized steel sheet. 0 to less than 5 ° C, or Alternatively, by adding an easily oxidizable element to the plating bath in an amount of 0.002 to 0.05% by mass, deterioration of the surface gloss of the chemically treated Mg-containing hot-dip galvanized steel sheet can be suppressed.
- At least one oxidizable element selected from rare earth elements, Y, Zr or Si: 0.002 to 0.05%,
- the present invention provides a hot-dip Zn-coated steel sheet having good gloss retention by applying a hot-dip bath to a black band by using a hot-dip bath made of, and then subjecting the plating layer to a chemical conversion treatment.
- A1 approximately 6% by mass
- Mg approximately 3% by mass
- Ti approximately 0.05% by mass
- B approximately 0.01% by mass of molten zinc.
- bath preparation of Z n groups plated bath, metal structure of the plating layer and [a 1 / Z n / Z n in the matrix of 2 Mg ternary eutectic structure] [primary crystal a 1-phase], further [ Z n phase] and [Z n 2 Mg phase] was prepared-containing Mg molten Z n plated steel sheet having a tissue mixed (thickness 0.8 to 1.0 mm). At that time, the material temperature at the outlet side of the air jet cooler 5 was set to 33 ° C.
- the material temperature on the inlet side to the 1 quench zone 7 was set to 100 ° C or less, and the skin pass mill was set to about 70 ° C or less. It was made to pass through.
- the obtained Mg-containing molten Zn The steel plate had good surface gloss and did not cause any deterioration.
- the degree of deterioration of the surface gloss of the plating layer was examined by tests under various conditions.
- the surface gloss was evaluated by the lightness (L) measured by the L value of the Lab method using a spectrophotometer.
- Treated steel strip Hot-rolled steel strip with a thickness of 2.0 mm
- Nozzle used 2 fluid nozzle
- Average mist particle size about 50 ⁇ m
- Water jetting system 7 rows of headers with 10 flat spray nozzles arranged at 150 mm intervals in the board width direction
- any of steel sheet [A 1 / Z nZZ n 2 Mg ternary eutectic structure] And in the ground [primary crystal A l phase], in some cases more [Zn phase] and [Zn 2 M g] is mixed-metal structure having a (hereinafter, referred to as the metal structure of the "Zn 2 Mg-based") Met.
- Treated steel strip Hot-rolled steel strip with a thickness of 3.2 mm
- Nozzle used Plate-shaped nozzle with a slit width of 5 mm
- Water jetting device Flat spray nozzles are set at 150 mm intervals in the plate width direction. 7 rows of 0 headers are installed. Fluid: water (water pressure-2.2 kgf / cin 2 ) Water volume: shown in Table 2
- Example 3 For No.B-2 to No.B-5 in Example 3, the plating surface after the water quench was subjected to a chemical conversion treatment under the following conditions, and in the same manner as in Example 2, immediately after the treatment and after a constant temperature and constant temperature test of 20 hours. The brightness was checked, and the results are shown in Table 3.
- Treatment solution Zinchrome 3 387 N (manufactured by Nippon Parkerizing Co., Ltd. (total chromium concentration in the solution: 10 g / L)
- Chromium deposition amount 1 O mg / m 2
- Treatment solution A solution in which 1 g / L of zirconium fluoride is added to zinc 338 7 N (total chromium concentration in the solution: 20 g / L)
- Chromium deposition amount 40 mg / m 2
- Treatment solution An aqueous solution containing 50 g / L of magnesium phosphate, 10 gZL of potassium titanium fluoride, and 3 gZL of organic acid
- Treatment solution Zinchrome 3 387 N (Total chromium concentration in the solution: 10 gZL) Chromium adhesion amount: 10 mg / m 2
- Organic film urethane resin (film thickness: 1.5 zm)
- Treated steel strip Hot-rolled steel strip with 1.6 mm thickness
- Nozzle used 2 fluid nozzle
- Average mist particle size 10 to 30 Z m
- Nozzle used Plate-shaped nozzle with a slit width of 5 mm
- Water jetting device Flat spray nozzles are set at 150 mm intervals in the plate width direction.
- Amount of water 1 8 0 m 3 / h
- Table 4 also shows examples of chemical conversion treatment of the plating layer after water quenching (No. C-12 to ⁇ ⁇ C-15), but depending on whether or not an oxidizable element was added.
- the degree of decrease in the brightness L value differs, indicating that the addition of an easily oxidizable element can suppress the decrease in the brightness L value.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating With Molten Metal (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002323927A AU2002323927B2 (en) | 2002-07-24 | 2002-07-24 | Zinc-base hot dip galvanized steel sheet excellent in retention of gloss |
ES02755638T ES2350921T3 (es) | 2002-07-24 | 2002-07-24 | Chapa de acero galvanizado por inmersión en caliente basado en cinc excelente en la retención de brillo. |
EP02755638A EP1524326B1 (en) | 2002-07-24 | 2002-07-24 | Zinc-base hot dip galvanized steel sheet excellent in retention of gloss |
CA002444460A CA2444460C (en) | 2002-07-24 | 2002-07-24 | Hot-dip zn plated steel sheet excellent in luster-retaining property and method of producing the same |
PCT/JP2002/007485 WO2004009863A1 (ja) | 2002-07-24 | 2002-07-24 | 光沢保持性の良好な溶融Zn基めっき鋼板およびその製造法 |
AT02755638T ATE484605T1 (de) | 2002-07-24 | 2002-07-24 | Feuerverzinktes galvanisiertes zinkbasis- stahlblech mit ausgezeichneter beibehaltung des glanzes |
CN02808369.5A CN1276990C (zh) | 2002-07-24 | 2002-07-24 | 光泽保持性能优异的热浸镀锌薄钢板及其制备方法 |
DE60238001T DE60238001D1 (de) | 2002-07-24 | 2002-07-24 | Feuerverzinktes galvanisiertes zinkbasis-stahlblech mit ausgezeichneter beibehaltung des glanzes |
NZ528816A NZ528816A (en) | 2002-07-24 | 2002-07-24 | Zinc-based hot-dip galvanized steel sheet excellent in retention of gloss |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2002/007485 WO2004009863A1 (ja) | 2002-07-24 | 2002-07-24 | 光沢保持性の良好な溶融Zn基めっき鋼板およびその製造法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004009863A1 true WO2004009863A1 (ja) | 2004-01-29 |
Family
ID=30490773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/007485 WO2004009863A1 (ja) | 2002-07-24 | 2002-07-24 | 光沢保持性の良好な溶融Zn基めっき鋼板およびその製造法 |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1524326B1 (ja) |
CN (1) | CN1276990C (ja) |
AT (1) | ATE484605T1 (ja) |
AU (1) | AU2002323927B2 (ja) |
CA (1) | CA2444460C (ja) |
DE (1) | DE60238001D1 (ja) |
ES (1) | ES2350921T3 (ja) |
NZ (1) | NZ528816A (ja) |
WO (1) | WO2004009863A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8720023B2 (en) | 2004-11-23 | 2014-05-13 | Samsung Electronics Co., Ltd. | Method of manufacturing a monolithic duplexer |
JP2017508875A (ja) * | 2013-12-20 | 2017-03-30 | アルセロールミタル | 最適化されたワイピングによりZnAlMg被覆を有するシートを製造するための方法および対応するシート |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102330043B (zh) * | 2011-08-03 | 2013-03-13 | 马鞍山鼎泰稀土新材料股份有限公司 | 一种钢丝热浸镀稀土锌合金及热浸镀方法 |
CN103361588B (zh) * | 2012-03-30 | 2016-04-06 | 鞍钢股份有限公司 | 低铝低镁系锌铝镁镀层钢板生产方法及其镀层钢板 |
WO2013160566A1 (fr) | 2012-04-25 | 2013-10-31 | Arcelormittal Investigacion Y Desarrollo, S.L. | Procédé de réalisation d'une tôle à revêtements znalmg huilés et tôle correspondante. |
JP5097305B1 (ja) | 2012-04-25 | 2012-12-12 | 日新製鋼株式会社 | 黒色めっき鋼板 |
AU2013332257A1 (en) | 2012-10-17 | 2015-04-09 | Bluescope Steel Limited | Method of producing metal-coated steel strip |
TWI653362B (zh) | 2012-10-17 | 2019-03-11 | 澳大利亞商布魯史寇普鋼鐵有限公司 | 金屬被覆鋼帶的製造方法 |
KR20150070230A (ko) | 2012-10-18 | 2015-06-24 | 블루스코프 스틸 리미티드 | 금속 코팅된 강철 스트립의 제조방법 |
EP2824213A1 (de) * | 2013-07-12 | 2015-01-14 | Voestalpine Stahl GmbH | Verfahren zur Verbesserung der Haftfähigkeit auf einem schutzbeschichteten Stahlblech |
KR101767788B1 (ko) * | 2015-12-24 | 2017-08-14 | 주식회사 포스코 | 내마찰성 및 내백청성이 우수한 도금 강재 및 그 제조방법 |
CN108779543A (zh) * | 2016-03-31 | 2018-11-09 | 日新制钢株式会社 | 热浸镀铝钢线的制造方法 |
KR102031466B1 (ko) | 2017-12-26 | 2019-10-11 | 주식회사 포스코 | 표면품질 및 내식성이 우수한 아연합금도금강재 및 그 제조방법 |
JP6687175B1 (ja) * | 2018-05-16 | 2020-04-22 | 日本製鉄株式会社 | めっき鋼材 |
CN108977695B (zh) * | 2018-09-30 | 2020-12-01 | 济南大学 | 一种含钛和锑的热浸镀锌铝镁合金及其制备方法 |
TWI691615B (zh) * | 2019-04-10 | 2020-04-21 | 中國鋼鐵股份有限公司 | 鍍鋅鋼片及其製造方法 |
CN113025937B (zh) * | 2021-02-07 | 2023-03-17 | 首钢集团有限公司 | 一种热浸镀锌钢板及其制备方法 |
CN112941417A (zh) * | 2021-03-03 | 2021-06-11 | 靖江新舟合金材料有限公司 | 一种合金镀层钢板及其生产方法 |
CN113512691B (zh) * | 2021-03-11 | 2023-05-09 | 首钢集团有限公司 | 一种锌铝镁镀层钢及其制备方法 |
CN113604765B (zh) * | 2021-10-09 | 2022-01-04 | 天津市弘仁金属材料有限公司 | 一种钢带热浸镀方法 |
CN115261703A (zh) * | 2022-06-08 | 2022-11-01 | 日照宝华新材料有限公司 | 一种高耐蚀光伏支架用钢板的制造方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08188863A (ja) * | 1995-01-11 | 1996-07-23 | Nippon Steel Corp | 耐眩性の優れた溶融Znめっき鋼板及びその製造方法 |
WO2001059171A1 (fr) * | 2000-02-09 | 2001-08-16 | Nisshin Steel Co., Ltd. | TOLE D'ACIER REVETUE DE Zn-Al-Mg PAR IMMERSION A CHAUD A TENEUR ELEVEE EN Al |
JP2002080952A (ja) * | 2000-06-29 | 2002-03-22 | Nisshin Steel Co Ltd | 耐食性に優れた住宅用資材および住宅部材 |
JP2002146504A (ja) * | 2000-08-22 | 2002-05-22 | Nisshin Steel Co Ltd | 耐食性及び耐ホイスカ性に優れた電装用資材及び電装用部材 |
JP2002187234A (ja) * | 2000-12-21 | 2002-07-02 | Nisshin Steel Co Ltd | 耐食性に優れた非クロム系塗装鋼板 |
JP2002226958A (ja) * | 2001-02-02 | 2002-08-14 | Nisshin Steel Co Ltd | 光沢保持性の良好な溶融Zn基めっき鋼板およびその製造法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2754126B2 (ja) * | 1992-11-26 | 1998-05-20 | 新日本製鐵株式会社 | 外観、耐経時黒変性、耐食性に優れる溶融Zn−Alめっき鋼板 |
JPH10265926A (ja) * | 1997-03-25 | 1998-10-06 | Nisshin Steel Co Ltd | 耐食性および表面外観の良好な溶融Zn−Al−Mgめっき鋼帯の製造法 |
JP3888784B2 (ja) * | 1998-09-21 | 2007-03-07 | 日新製鋼株式会社 | 溶融Zn基めっき鋼板のエッジしわ防止法 |
-
2002
- 2002-07-24 CA CA002444460A patent/CA2444460C/en not_active Expired - Lifetime
- 2002-07-24 NZ NZ528816A patent/NZ528816A/en not_active IP Right Cessation
- 2002-07-24 EP EP02755638A patent/EP1524326B1/en not_active Expired - Lifetime
- 2002-07-24 AT AT02755638T patent/ATE484605T1/de not_active IP Right Cessation
- 2002-07-24 AU AU2002323927A patent/AU2002323927B2/en not_active Expired
- 2002-07-24 DE DE60238001T patent/DE60238001D1/de not_active Expired - Lifetime
- 2002-07-24 CN CN02808369.5A patent/CN1276990C/zh not_active Expired - Lifetime
- 2002-07-24 WO PCT/JP2002/007485 patent/WO2004009863A1/ja active IP Right Grant
- 2002-07-24 ES ES02755638T patent/ES2350921T3/es not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08188863A (ja) * | 1995-01-11 | 1996-07-23 | Nippon Steel Corp | 耐眩性の優れた溶融Znめっき鋼板及びその製造方法 |
WO2001059171A1 (fr) * | 2000-02-09 | 2001-08-16 | Nisshin Steel Co., Ltd. | TOLE D'ACIER REVETUE DE Zn-Al-Mg PAR IMMERSION A CHAUD A TENEUR ELEVEE EN Al |
JP2002080952A (ja) * | 2000-06-29 | 2002-03-22 | Nisshin Steel Co Ltd | 耐食性に優れた住宅用資材および住宅部材 |
JP2002146504A (ja) * | 2000-08-22 | 2002-05-22 | Nisshin Steel Co Ltd | 耐食性及び耐ホイスカ性に優れた電装用資材及び電装用部材 |
JP2002187234A (ja) * | 2000-12-21 | 2002-07-02 | Nisshin Steel Co Ltd | 耐食性に優れた非クロム系塗装鋼板 |
JP2002226958A (ja) * | 2001-02-02 | 2002-08-14 | Nisshin Steel Co Ltd | 光沢保持性の良好な溶融Zn基めっき鋼板およびその製造法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8720023B2 (en) | 2004-11-23 | 2014-05-13 | Samsung Electronics Co., Ltd. | Method of manufacturing a monolithic duplexer |
JP2017508875A (ja) * | 2013-12-20 | 2017-03-30 | アルセロールミタル | 最適化されたワイピングによりZnAlMg被覆を有するシートを製造するための方法および対応するシート |
US10138538B2 (en) | 2013-12-20 | 2018-11-27 | Arcelormittal | ZnAlMg-coated metal sheet produced by optimized wiping |
Also Published As
Publication number | Publication date |
---|---|
EP1524326A1 (en) | 2005-04-20 |
CA2444460A1 (en) | 2004-01-24 |
ES2350921T3 (es) | 2011-01-28 |
DE60238001D1 (de) | 2010-11-25 |
CA2444460C (en) | 2008-01-22 |
AU2002323927B2 (en) | 2005-08-25 |
EP1524326B1 (en) | 2010-10-13 |
AU2002323927A1 (en) | 2004-02-09 |
CN1276990C (zh) | 2006-09-27 |
NZ528816A (en) | 2005-10-28 |
EP1524326A4 (en) | 2006-09-13 |
CN1503853A (zh) | 2004-06-09 |
ATE484605T1 (de) | 2010-10-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2004009863A1 (ja) | 光沢保持性の良好な溶融Zn基めっき鋼板およびその製造法 | |
EP0730045B1 (en) | Steel sheet with Zn-Mg binary coating layer excellent in corrosion resistance and manufacturing method thereof | |
US4369211A (en) | Process for producing a hot dip galvanized steel strip | |
CN117987688A (zh) | 熔融Al-Zn-Mg-Si-Sr镀覆钢板及其制造方法 | |
JP4064634B2 (ja) | 光沢保持性の良好な溶融Zn基めっき鋼板およびその製造法 | |
WO2008084875A1 (ja) | 化成処理性に優れた高強度冷延鋼板の製造方法および製造設備 | |
KR20150073315A (ko) | 내식성이 우수한 아연-알루미늄-마그네슘 합금 도금강판 및 그 제조방법 | |
JP2904809B2 (ja) | 溶融亜鉛めっき熱延鋼板の製造方法 | |
US6677058B1 (en) | Hot-dip Zn plated steel sheet excellent in luster-retaining property and method of producing the same | |
JPS6055591B2 (ja) | 耐経時めつき剥離性に優れた溶融亜鉛合金めつき鋼板の製造法 | |
JP4555499B2 (ja) | 表面性状に優れた溶融Zn−Al−Mg−Siめっき鋼材とその製造方法 | |
JPH0688187A (ja) | 合金化溶融亜鉛めっき鋼板の製造方法 | |
US4792499A (en) | Zn-Al hot-dip galvanized steel sheet having improved resistance against secular peeling and method for producing the same | |
JPH02175852A (ja) | 表面平滑性に優れた高耐食性溶融亜鉛―アルミニウム合金めっき鋼板の製造方法 | |
KR100817735B1 (ko) | 광택 유지성이 양호한 용융 Zn 기본 도금 강판의 제조방법 | |
JPS59104463A (ja) | 溶接性に優れた溶融亜鉛メツキ鋼板の製造方法 | |
JPS58177447A (ja) | 耐食性、塗装性に優れた溶融亜鉛めつき鋼板の製造法 | |
JPH08170160A (ja) | Si含有高張力(合金化)溶融亜鉛めっき鋼板の製造方法 | |
JPH0688193A (ja) | 合金化溶融亜鉛めっき鋼板の製造方法 | |
JP2005290418A (ja) | プレス加工性に優れた溶融Al−Zn系めっき鋼板及びその製造方法 | |
JP7265217B2 (ja) | ホットスタンプ用めっき鋼板 | |
JP2003213395A (ja) | 加工性と加工部耐食性に優れた表面処理鋼板及びその製造方法 | |
JP2001107212A (ja) | 表面性状に優れる高耐食性溶融Zn−Al−Mg系めっき鋼板 | |
JPH06256925A (ja) | プレス成形性に優れた亜鉛−鉄合金化溶融亜鉛めっき鋼板 | |
EP4411015A1 (en) | Plated steel sheet having excellent corrosion resistance and surface appearance and method for manufacturing same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 1-2003-500826 Country of ref document: PH |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2444460 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2002323927 Country of ref document: AU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020037012089 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2002755638 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 528816 Country of ref document: NZ |
|
WWE | Wipo information: entry into national phase |
Ref document number: 028083695 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU CA CN ID KR NZ PH |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 2002755638 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 528816 Country of ref document: NZ |
|
WWG | Wipo information: grant in national office |
Ref document number: 2002323927 Country of ref document: AU |
|
WWG | Wipo information: grant in national office |
Ref document number: 528816 Country of ref document: NZ |
|
WWG | Wipo information: grant in national office |
Ref document number: 12003500826 Country of ref document: PH |