EP0890655B1 - Procédé de traitement de surface de tôles d'acier galvanisé allié et tôle obtenue. - Google Patents
Procédé de traitement de surface de tôles d'acier galvanisé allié et tôle obtenue. Download PDFInfo
- Publication number
- EP0890655B1 EP0890655B1 EP98401646A EP98401646A EP0890655B1 EP 0890655 B1 EP0890655 B1 EP 0890655B1 EP 98401646 A EP98401646 A EP 98401646A EP 98401646 A EP98401646 A EP 98401646A EP 0890655 B1 EP0890655 B1 EP 0890655B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chromium
- alloy
- sheet
- film
- roughness
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 19
- 239000010959 steel Substances 0.000 title claims abstract description 19
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 19
- 239000011701 zinc Substances 0.000 title claims description 19
- 229910052725 zinc Inorganic materials 0.000 title claims description 18
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 63
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 49
- 239000011651 chromium Substances 0.000 claims abstract description 49
- 239000010408 film Substances 0.000 claims abstract description 45
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 32
- 239000000956 alloy Substances 0.000 claims abstract description 32
- 238000003466 welding Methods 0.000 claims abstract description 28
- 238000005482 strain hardening Methods 0.000 claims abstract description 22
- 239000010409 thin film Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000004381 surface treatment Methods 0.000 claims abstract description 10
- 238000001771 vacuum deposition Methods 0.000 claims abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 238000010422 painting Methods 0.000 claims description 13
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 12
- 239000000788 chromium alloy Substances 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 239000003973 paint Substances 0.000 claims description 10
- 238000001962 electrophoresis Methods 0.000 claims description 9
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 6
- 229910000640 Fe alloy Inorganic materials 0.000 abstract description 8
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 abstract description 3
- 230000003746 surface roughness Effects 0.000 abstract 2
- 235000019592 roughness Nutrition 0.000 description 35
- 230000007547 defect Effects 0.000 description 10
- 229910001335 Galvanized steel Inorganic materials 0.000 description 9
- 239000008397 galvanized steel Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000013078 crystal Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 241001080024 Telles Species 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 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
- 238000000137 annealing Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
- C23C28/025—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only with at least one zinc-based layer
-
- 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
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
Definitions
- the invention relates to a method for treating the surface of a sheet. of alloy-coated steel comprising essentially zinc and iron and the sheet which can be obtained by this process.
- Such a coated sheet is generally obtained by dipping a strip of bare steel in a bath of molten zinc followed by alloy annealing in suitable thermal conditions so that the zinc coating layer combines with the steel substrate.
- the galvanized steel sheets alloyed or not, have generally a roughness greater than steel sheets coated with zinc by electrodeposition; the surface of the galvanized alloy steel sheets present in particular many emerging crystals.
- such sheets are generally subjected to a work hardening operation between two cylinders of rolling in order, in particular, to print on their surface a roughness suitable for subsequent processing steps, such as stamping and / or setting painting.
- the roughness of a surface is commonly evaluated in the following conventional manner according to German standards DIN 4768 or 4777: several profilometric (or "profile") surveys of the surface are carried out, each profile being filtered during recording, by means of a high-pass electronic filter reducing the amplitude of the ripples exceeding a predetermined filtering threshold (here: threshold fixed at 2.5 mm, percentage of filtering at the threshold value: 50%); the vertical spread of this profile is then represented, that is to say the distribution of the depth recorded with respect to a given reference line (Ox); this reference line (Ox) is the straight line running parallel to the general direction of the profile and passing through its upper points; on the ordinate axis (Oz), drawn perpendicularly to Ox, the depths of the profile are plotted; the deviation of the roughness profile from the reference line Ox can be considered as a random variable and all the deviations or depths then form a statistical distribution from which the position of the mean line of the profile is calculated and l 'arithmetic mean deviation of the depth from the mean
- the arithmetic mean roughness R a of the sheets obtained is generally between 0.8 and 1.2 ⁇ m.
- Alloyed galvanized steel sheets generally have a excellent weldability, especially resistance welding, example spot welding or seam welding.
- the current supply and pressure maintenance organs for the spot welding are usually formed by welding electrodes per point.
- the electrodes generally used are made of high-grade cupro-alloy copper such as cupro-chrome with 1% chromium or cupro-chrome-zirconium with 1% chromium and 0.1% maximum zirconium.
- the document FR 93 09304 describes a process in which, before painting, vacuum deposit on the zinc-coated side to be painted, a thin film of chromium or chromium alloy, of thickness at most equal to 1 ⁇ m about.
- the film thickness must be greater than 0.01 ⁇ m.
- the object of the invention is to provide galvanized alloy steel sheets suitable for both resistance welding and electrophoresis painting.
- Document JP 08 060326 A (KOBE STEEL LTD) describes steel sheets dip coated with a layer of zinc, aluminum or their alloys and with a thin surface metallic film of Cr, Si, Cu, Ni, Co, Sn or Ag, or their alloys; the examples given in the description relate only zinc, zinc-nickel or aluminum-silicon coatings (see the second column of the tables) and metallic copper films, silicon or nickel (see the fourth column of the tables).
- these sheets are generally covered with a thin organic coating and are used in fields household appliances and building.
- these sheets generally have appearance defects of surface bound to the mattes present in the dip coating baths and flowering ("spangle" in English) caused by solidification of the coating.
- cylinders are used whose glossy surface has a roughness Ra ⁇ 0.1 ⁇ m; in practice, the roughness (R a ) of the sheets obtained remains greater than or equal to 0.05 ⁇ m.
- the shine that is obtained no longer depends the nature of the dip coating or the metallic film superficial.
- the work hardening operation can be carried out either before, after, or before and after the deposition of the metallic film (see in particular in examples, sixth column of the tables).
- the invention aims to obtain galvanized sheets both without crater defects and easily weldable and, knowing that, for craterization, only the alloyed galvanized sheets are and that, for weldability, it is chromium which is mainly cause, the invention relates here only to the much more specific field sheets coated with a layer of zinc and iron alloy, provided with a film thin metal of chromium or chromium-based alloy; none of Examples of document JP 08 060326 A do not relate to this specific field.
- the document JP 08 060326 A is only a generic disclosure which does not include any particular disclosure relating to the field of the invention; this generic disclosure relates to sheets with a shiny appearance and low roughness (R a ⁇ 0.2 ⁇ m) whereas the field of the invention is that of alloyed galvanized sheets which generally have, as indicated above, a higher roughness ( generally R a > 0.8 ⁇ m).
- the function of hardening has the function of making disappear the chromium from the reliefs or roughness plates of the surface, especially in places where the surface to be treated is brought into direct contact under pressure with the work hardening cylinder.
- the alloyed galvanized sheet obtained is weldable by resistance without the aforementioned drawbacks; it is very likely that, the electrical contact between the welding electrode and the sheet being established at the level of the reliefs or plates roughness devoid of chromium according to the invention, the risks are limited between the electrode and the sheet and we find good weldability.
- the quantity of chromium or chromium alloy on the surface of said relief patterns must remain less than 90% of the quantity total and overall chromium or chromium alloy of said thin film.
- the invention may also present one or more of the characteristics subject of claims 2 to 4.
- the invention also relates to a resistance welding process of a steel sheet coated with an alloy dip essentially comprising zinc and iron characterized in that before the actual welding operation speak, we proceed to a surface treatment according to the invention.
- the invention also relates to a method of painting by electrophoresis of a steel sheet coated with an alloy quench comprising essentially zinc and iron characterized in that, before application to strictly speaking of electrophoresis painting, we proceed to a surface treatment according to the invention.
- the surface treatment according to the invention therefore applies to sheets of alloyed galvanized steel, obtained in a conventional manner by immersion of a bare steel sheet in a bath consisting essentially of liquid zinc and by heat treatment of the sheet thus coated.
- This sheet can be coated on one side or on both sides.
- part of the iron in the substrate diffuses into the surface layer of zinc so that a coating of Zn-Fe alloy with an average iron content of the order of 10%.
- the thickness of the coating of Zn-Fe alloy is generally between 5 and 10 ⁇ m; the numerous crystals emerging at the surface give the sheet a high roughness, corresponding to R a values much greater than 1 ⁇ m; these crystals generally correspond to so-called ⁇ and ⁇ phases.
- a thin film of chromium or of alloy of chromium with an average thickness of between 0.01 and 1 ⁇ m, for example equal to 0.5 ⁇ m.
- This thin film can be deposited chemically and / or electrochemically in a manner known per se by dipping under possible polarization in a chromium plating bath.
- this thin film is deposited under vacuum as described in the document FR 93 09304, for example by evaporation, by ion spraying or by magnetron sputtering.
- This hardening operation is of a conventional type, known in itself, usually performed after cold rolling of steel sheets, in particular to print on the sheet a roughness adapted to the transformations or to subsequent uses of the sheet, obviously lower than that of the surface before work hardening.
- the roughness R a of the sheets obtained is generally between 0.8 and 1.2 ⁇ m.
- this operation can be carried out with watering by a work hardening solution.
- this sheet treated according to the invention is painted by cataphoresis, we get as few crater-like defects as when we put in painting the same sheet treated by the process described in document FR 93 09304, i.e. also with a chrome film but without posterior work hardening.
- the chromium film is no longer homogeneous and continuous as previously; it is a discontinuous film distributed mainly in the hollows roughness of the surface.
- the method according to the invention therefore makes it possible to prepare a steel sheet. galvanized alloy with a discontinuous film of chromium or alloy based on chromium, mainly distributed in the roughness hollows of the sheet.
- chromium or the chromium alloy disappear from the relief patterns or trays from the surface
- the purpose of this example is to illustrate the improvement in the weldability of sheets galvanized alloy steel that is obtained when treated on the surface the invention.
- This example is also intended to illustrate the improvement of the ability to the cataphoretic painting of galvanized alloy steel sheets that obtained when treated on the surface according to the invention, in particular in terms of resistance to craterization.
- V max the maximum electrophoretic voltage V max is measured . in the paint bath beyond which crater-like defects appear on the layer of paint applied to the coated face of the sheet.
- the paint bath used is a used conventional cataphoretic bath referenced PPG 718960 from the PPG Company.
- used bath is meant a bath that has already been used for operations of painting to the point that it is particularly likely to generate defects in the form of craters on alloyed galvanized sheets.
- the purpose of this example is to illustrate the improvement in the weldability of sheets galvanized alloy steel that is obtained when treated on the surface the invention, even when the chromium film has an average thickness very weak, in particular less than or equal to 0.2 ⁇ m.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating With Molten Metal (AREA)
- Electroplating Methods And Accessories (AREA)
- Laminated Bodies (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Physical Vapour Deposition (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9708769 | 1997-07-10 | ||
| FR9708769A FR2765891B1 (fr) | 1997-07-10 | 1997-07-10 | Procede de traitement de surface de toles d'acier revetu au trempe d'alliage comprenant essentiellement du zinc et du fer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0890655A1 EP0890655A1 (fr) | 1999-01-13 |
| EP0890655B1 true EP0890655B1 (fr) | 2001-05-30 |
Family
ID=9509090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98401646A Expired - Lifetime EP0890655B1 (fr) | 1997-07-10 | 1998-07-02 | Procédé de traitement de surface de tôles d'acier galvanisé allié et tôle obtenue. |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0890655B1 (pt) |
| AT (1) | ATE201720T1 (pt) |
| DE (1) | DE69800855T2 (pt) |
| ES (1) | ES2157647T3 (pt) |
| FR (1) | FR2765891B1 (pt) |
| PT (1) | PT890655E (pt) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112013017633B1 (pt) * | 2010-12-17 | 2019-09-17 | ArcelorMittal Investigación y Desarrollo, S.L. | Chapa de aço com um revestimento multicamada, processo de fabricação de uma chapa e processo de fabricação de uma peça a partir de uma chapa |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1521036A1 (de) * | 1964-02-01 | 1969-09-04 | Thyssen Industrie | Verfahren zur Herstellung von verchromtem Stahlblech |
| FR1487140A (fr) * | 1965-07-20 | 1967-06-30 | Procédé pour améliorer la protection contre la corrosion de surfaces en fer et acier, et notamment de tôles embouties | |
| JPS5853437A (ja) * | 1981-09-24 | 1983-03-30 | 日新製鋼株式会社 | 溶接性塗装鋼板およびその製造方法 |
| JPS6086257A (ja) * | 1983-10-19 | 1985-05-15 | Kawasaki Steel Corp | 塗装性能の優れたガルバニ−ルド鋼板 |
| JPS61288080A (ja) * | 1985-06-14 | 1986-12-18 | Kawasaki Steel Corp | シ−ム溶接缶用表面処理鋼板およびその製造方法 |
| JPH0637707B2 (ja) * | 1988-12-26 | 1994-05-18 | 住友金属工業株式会社 | 耐フレーキング性に優れた多層めっき鋼板 |
| JP2834529B2 (ja) * | 1990-04-16 | 1998-12-09 | 新日本製鐵株式会社 | 耐食性及び溶接性に優れる表面処理鋼板及びその製造方法 |
| JPH05263208A (ja) * | 1991-11-20 | 1993-10-12 | Kowa Kogyosho:Kk | 亜鉛系メッキ被覆物およびその製造方法 |
| JP2706597B2 (ja) * | 1992-07-02 | 1998-01-28 | 住友金属工業株式会社 | スポット溶接性に優れた積層めっきアルミニウム板 |
| JPH05220502A (ja) * | 1992-02-14 | 1993-08-31 | Nippon Steel Corp | アーク溶接性に優れた亜鉛めっき鋼板 |
| FR2708291B1 (fr) * | 1993-07-28 | 1995-10-20 | Lorraine Laminage | Procédé de traitement de surface de pièces métalliques revêtues de zinc telles que des tôles d'acier, pour améliorer leurs propriétés superficielles. |
| JPH0860326A (ja) * | 1994-08-17 | 1996-03-05 | Kobe Steel Ltd | 高光沢意匠性複層めっき鋼板およびその製造方法 |
| JPH09125260A (ja) * | 1995-11-07 | 1997-05-13 | Kawasaki Steel Corp | 溶接缶用表面処理鋼板 |
-
1997
- 1997-07-10 FR FR9708769A patent/FR2765891B1/fr not_active Expired - Fee Related
-
1998
- 1998-07-02 ES ES98401646T patent/ES2157647T3/es not_active Expired - Lifetime
- 1998-07-02 AT AT98401646T patent/ATE201720T1/de active
- 1998-07-02 PT PT98401646T patent/PT890655E/pt unknown
- 1998-07-02 DE DE69800855T patent/DE69800855T2/de not_active Expired - Lifetime
- 1998-07-02 EP EP98401646A patent/EP0890655B1/fr not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0890655A1 (fr) | 1999-01-13 |
| DE69800855T2 (de) | 2001-11-22 |
| DE69800855D1 (de) | 2001-07-05 |
| ES2157647T3 (es) | 2001-08-16 |
| ATE201720T1 (de) | 2001-06-15 |
| FR2765891A1 (fr) | 1999-01-15 |
| FR2765891B1 (fr) | 1999-08-20 |
| PT890655E (pt) | 2001-10-30 |
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