WO2013099316A1 - Procédé de fabrication d'une tôle d'acier laminée à froid ayant d'excellentes propriétés de conversion chimique et une excellente résistance à la corrosion après revêtement - Google Patents

Procédé de fabrication d'une tôle d'acier laminée à froid ayant d'excellentes propriétés de conversion chimique et une excellente résistance à la corrosion après revêtement Download PDF

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Publication number
WO2013099316A1
WO2013099316A1 PCT/JP2012/063102 JP2012063102W WO2013099316A1 WO 2013099316 A1 WO2013099316 A1 WO 2013099316A1 JP 2012063102 W JP2012063102 W JP 2012063102W WO 2013099316 A1 WO2013099316 A1 WO 2013099316A1
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Prior art keywords
steel sheet
chemical conversion
cold
rolled steel
coating
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PCT/JP2012/063102
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English (en)
Japanese (ja)
Inventor
平　章一郎
大塚　真司
吉見　直人
杉本　芳春
Original Assignee
Ｊｆｅスチール株式会社
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Application filed by Ｊｆｅスチール株式会社 filed Critical Ｊｆｅスチール株式会社
Priority to CN201280064512.3A priority Critical patent/CN104024476B/zh
Priority to KR1020147019016A priority patent/KR101639926B1/ko
Publication of WO2013099316A1 publication Critical patent/WO2013099316A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/22—Electroplating: Baths therefor from solutions of zinc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/78—Pretreatment of the material to be coated
    • 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
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
    • 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

Definitions

  • the present invention relates to a method for producing a cold-rolled steel sheet which forms a sufficient chemical conversion film and has good corrosion resistance after coating.
  • a method of strengthening a solid solution by adding an alloy element such as Si or Mn, a method of refining crystal grains, and adding a precipitate forming element such as Nb, Ti, or V A method of strengthening and a method of strengthening by generating a hard transformation structure such as a martensite phase are effective.
  • Si is an element effective in increasing the strength while ensuring ductility, because the effect of lowering the ductility is small compared to other elements. For this reason, it may be said that the addition of Si is almost essential for a steel sheet that achieves both workability and high strength.
  • Patent Document 1 discloses a cold-rolled steel sheet on which an oxide having an atomic ratio [Si / Mn] of 1 or less is formed on the surface, and (Si / Mn) ratio of the steel sheet component, annealing temperature as a manufacturing method thereof, The thing which prescribed
  • the annealing temperature needs to be lowered as the amount of Si in the steel sheet component increases, so if high temperature annealing is required to obtain the desired strength and elongation, the moisture ratio of the atmosphere must be increased.
  • Patent Document 2 the size of Si—Mn composite oxide on the surface of the steel sheet and the number per unit area with respect to the steel sheet of Si: 0.05 to 2% and [Si] / [Mn] ⁇ 0.4.
  • a high-strength cold-rolled steel sheet has been proposed that defines a steel sheet surface coverage of an oxide mainly composed of Si.
  • Patent Document 3 describes the (Mn / Si) ratio of the Mn-Si composite oxide on the steel sheet surface to the steel sheet of Si: 0.1 to 1% and [Si] / [Mn] ⁇ 0.4.
  • a high-strength cold-rolled steel sheet that defines the size, the number per unit area, and the steel sheet surface coverage of an oxide mainly composed of Si has been proposed.
  • Patent Document 4 the (Mn / Si) ratio of the Mn—Si composite oxide on the steel sheet surface is compared with the steel sheet of Si: 0.1 to 2% and [Si] / [Mn] ⁇ 0.4.
  • a high-strength cold-rolled steel sheet that defines the size, the number per unit area, and the steel sheet surface coverage of an oxide mainly composed of Si has been proposed.
  • Patent Documents 2 to 4 can be applied to steel sheets containing up to 2% Si, and examples of the production method include pickling conditions after hot rolling and dew point during continuous annealing. It is supposed to be kept below -40 ° C. However, it is necessary for the steel sheet to satisfy a specific Si / Mn ratio, and there is a drawback that the degree of freedom of the steel sheet components is small. Further, setting the dew point during continuous annealing to ⁇ 40 ° C. or less is a technique that is not suitable for mass production because it is considerably difficult to control considering the dew point fluctuation of an actual production line.
  • Patent Document 5 discloses a cold-rolled steel sheet that defines the surface coverage of the Si-based oxide on the steel sheet surface with respect to a steel sheet of Si: 0.4% or more and [Si] / [Mn] ⁇ 0.4. A manufacturing method for pickling after annealing has been proposed.
  • Patent Document 6 proposes a technique for grinding a steel plate surface by 2.0 g / m 2 or more after annealing with respect to a steel plate containing 0.5 mass% or more of Si.
  • Patent Document 7 discloses that after annealing a steel sheet containing Si: 0.5 to 2.0%, it was treated with an acidic solution having a pH of 0 to 4 and a temperature of 10 to 100 ° C. for 5 to 150 seconds, and a pH of 10 to 14 and a temperature. There has been proposed a technique of performing a treatment for 2 to 50 seconds with an alkaline solution at 10 to 100 ° C.
  • Patent Documents 5 to 7 all remove the oxide layer formed on the surface after annealing, but in the example of Patent Document 5, a high-concentration acid is used to remove the Si-based oxide. In this case, since the formation of a passive film on the iron base is promoted, there is a drawback that it does not necessarily improve the chemical conversion property. In Patent Documents 6 and 7, it is necessary to provide a section for grinding or an acidic solution treatment ⁇ alkali solution treatment section in the line, which leads to an increase in equipment length and cost, which is not realistic.
  • Patent Document 8 discloses a technique for achieving both mold galling resistance and chemical conversion treatment properties by having a Zn plating film with an adhesion amount of 10 to 2000 mg / m 2 on the surface of a steel sheet and having a predetermined crystal orientation.
  • This technology is mainly intended to improve mold galling resistance.
  • microcells are formed between the Zn adhering part and the steel sheet exposed part even with a small amount of Zn adhering. This suggests that the chemical conversion reaction becomes active.
  • Si concentration of the steel plate is high, a considerable portion of the steel plate surface is covered with SiO 2 oxide, and if this portion is a steel plate exposed portion, it cannot be said that microcells are necessarily formed. .
  • a sulfuric acid bath is used as the electroplating bath, and when a Zn plating film is formed under the same conditions presented in the examples, sufficient degreasing cannot be performed depending on the type of alkaline degreasing solution before chemical conversion treatment. I understood that.
  • JP-A-4-276060 Japanese Patent No. 3934604 JP 2005-290440 A Japanese Patent No. 3889768 JP 2004-323969 A JP 2003-226920 A JP 2007-009269 A JP 2006-299351 A
  • An object of the present invention is to provide a method for producing a cold-rolled steel sheet having excellent chemical conversion properties and post-coating corrosion resistance for steel sheets containing Si as a reinforcing element.
  • the inventors of the present invention focused on the fact that when SiO 2 is formed on the surface of the steel sheet, chemical conversion crystal formation reaction does not occur in the formed portion because Fe, which is the main component of the steel sheet, does not dissolve.
  • the present inventors considered that the formation of a dissolution reaction on the surface of a steel sheet by some method leads to a chemical conversion crystal formation reaction.
  • metal Zn forms a zinc phosphate film as a chemical conversion film by reaction with a chemical conversion treatment solution.
  • the Zn layer is not only a zinc layer uniformly attached to one surface of the cold-rolled steel sheet, but also non-uniformly attached to the surface of the cold-rolled steel sheet, and partially forms a layer on the surface of the cold-rolled steel sheet. It also includes a discontinuous zinc layer.
  • the chemical conversion treatment is a general process that proceeds in the order of alkaline degreasing ⁇ surface conditioning ⁇ phosphate treatment.
  • oil is mixed one after another, so in the actual line Degreasing ability is considerably inferior.
  • a steel sheet that has been electroplated with Zn and washed with water is immersed in a degreasing solution that assumes such a real line, the rust preventive oil applied to the steel sheet cannot be removed sufficiently and water repelling occurs.
  • the inventors have found.
  • the steel sheet with such water repellency has poor wettability with the chemical conversion solution as it is and surface unevenness occurs, it is important to completely remove oil on the surface of the steel sheet after alkaline degreasing. From this point of view, after applying electro-Zn plating and washing with water, the oil content of the steel sheet can be removed even when using a degreasing solution assuming an actual line by further contacting with an aqueous solution containing P. It was found that a water wetting rate was obtained.
  • the present invention has been made based on the above findings, and the gist thereof is as follows. [1] After applying electro-Zn plating so that the amount of Zn deposited on the cold-rolled steel sheet is 100 to 5000 mg / m 2 and washing with water, it contains P, and the concentration of P is 0.001 to 2 g / L. A method for producing a cold-rolled steel sheet having excellent chemical conversion treatment properties and post-coating corrosion resistance, wherein the cold-rolled steel sheet is brought into contact with an aqueous solution having a temperature in the range of 30 to 60 ° C.
  • Electroplating Zn so that the adhesion amount of Zn is 100 to 1000 mg / m 2 on the surface of the cold-rolled steel sheet, washing with water, containing P, and the concentration of P being 0.001 to 2 g / L A method for producing a cold-rolled steel sheet having excellent chemical conversion treatment properties and post-coating corrosion resistance, wherein the cold-rolled steel sheet is brought into contact with an aqueous solution having a temperature in the range of 30 to 60 ° C.
  • a cold-rolled steel sheet having excellent chemical conversion properties and post-coating corrosion resistance can be obtained.
  • Adequate chemical conversion film is applied even to steel sheets that are difficult to form in the coating process in automobile manufacturing because of the oxides of Si and Mn, which are known as surface concentrating elements. It can be formed and good post-coating corrosion resistance can be obtained.
  • a cold-rolled steel sheet is produced by subjecting a cold-rolled steel sheet to a heat treatment in a range of 700 to 900 ° C. in a reducing atmosphere containing hydrogen.
  • heating in a reducing atmosphere causes a phenomenon in which easily oxidizable elements of steel plate components are concentrated as oxides on the surface of the steel plate (hereinafter sometimes referred to as surface concentration).
  • surface concentration there are SiO 2, MnO and Si-Mn-based composite oxide.
  • the element that reacts with the chemical conversion treatment liquid is steel sheet component Fe.
  • this Zn becomes an element that reacts with the chemical conversion solution.
  • the phosphoric acid crystal to be formed also forms phosphophyllite (Zn 2 Fe (PO 4 ) 2 .4H 2 O) in a normal cold-rolled steel sheet.
  • a considerable amount of phosphate crystals becomes hopite (Zn 3 (PO 4 ) 2 .4H 2 O).
  • the amount of Zn attached to the steel sheet surface needs to be 100 mg / m 2 or more.
  • Zn applied to the surface functions to form a chemical conversion treatment crystal, and thus the steel plate surface needs to be sufficiently covered. That is, when the adhesion amount is less than 100 mg / m 2 , Zn cannot cover the steel sheet surface, and improvement of the chemical conversion treatment is not recognized.
  • the upper limit is 5000 mg / m 2 . . From the viewpoint of further suppressing an increase in cost, it is preferably 1000 mg / m 2 or less.
  • the electroplating method is the best in the present invention. In this invention, it is because the suitable adhesion amount of Zn which has an effect is 5000 mg / m ⁇ 2 > or less, for example, it cannot respond to such thin plating with a hot dipping method.
  • the usual chemical conversion treatment is performed in the order of alkali degreasing ⁇ surface adjustment ⁇ phosphate treatment.
  • the first alkaline degreasing step it is necessary to remove rust preventive oil applied to the steel sheet, press washing oil frequently used during press molding of the automobile body outer plate, and the like.
  • the oil is not always removed.
  • oil may be mixed in or deterioration of the alkaline degreasing solution may be considered.
  • the surface conditioning liquid is not properly applied, and in the next phosphating process, there is an adverse effect on the phosphating process, such as a part where the phosphate crystals are coarsened or crystals are not formed. There is.
  • the electrode is immersed in a P (phosphorus) -containing aqueous solution after being subjected to electro Zn plating.
  • a P phosphorus
  • electro Zn plating a P (phosphorus) -containing aqueous solution
  • a small amount of P adheres to the surface, which makes it possible to sufficiently degrease even when the deterioration of the alkaline degreasing solution is considered.
  • this mechanism is presumed, when a general zinc sulfate bath is used as the electro-Zn plating bath, sulfate radicals are incorporated into the Zn plating film, and this sulfate radical increases the affinity with oil. It will be difficult.
  • the P concentration of the aqueous solution containing P brought into contact with the steel sheet is preferably in the range of 0.001 to 2 g / L. This is because if it is less than 0.001 g / L, the washing effect of sulfate radicals is small, and the adhesion of P to the surface may not be sufficient. On the other hand, even if it exceeds 2 g / L, there is no significant difference in effect.
  • the temperature of the aqueous solution containing P is preferably in the range of 30 to 60 ° C. This is because if it is less than 30 ° C., it takes time to wash the sulfate radicals and adhere P, and the continuous annealing equipment requires long equipment. On the other hand, if the temperature exceeds 60 ° C., the effect is sufficient, but it is not economically appropriate because an extra facility for heating is required.
  • the method of bringing the steel sheet into contact with the aqueous solution containing P there is no particular limitation on the method of bringing the steel sheet into contact with the aqueous solution containing P.
  • an immersion method or a spray method can be employed.
  • the spray pressure, the nozzle diameter, the distance from the nozzle to the steel plate, and the like when the spray method is adopted only have to satisfy sufficient conditions for the aqueous solution to come into contact with the steel plate, and the conditions are not particularly limited.
  • Si is used for example. It is suitably used for high-strength cold-rolled steel sheets containing 0.5% or more.
  • the amount of Zn adhered to the steel sheet surface is 100-5000 mg / m 2 and Zn is adhered, that is, the presence of a slight amount of Zn on the steel sheet surface is recognized as an improvement in corrosion resistance after coating.
  • this invention is a technique by which chemical conversion property and corrosion resistance after coating are ensured for all cold-rolled steel sheets.
  • Steels A to H having the composition shown in Table 1 are melted by a conventional steelmaking process, continuously cast into a slab, and then the slab is reheated to 1250 ° C., and the finish rolling finish temperature is set.
  • Hot rolling was performed at 850 ° C. and a coiling temperature of 600 ° C. to obtain a hot rolled sheet having a thickness of 3.0 mm.
  • the hot-rolled sheet was pickled and then cold-rolled to a plate thickness of 1.5 mm to obtain a test material.
  • This test material was heat-treated in a nitrogen atmosphere containing 10 vol% of hydrogen in a range of 800 to 850 ° C. for 2 minutes at maximum using a laboratory reduction heating simulator to prepare an annealed plate (cold rolled steel plate).
  • an iridium oxide plate is used for the anode using an aqueous solution containing zinc sulfate heptahydrate: 1 mol / L and adjusted to pH 2.0 using sulfuric acid.
  • the amount of Zn deposited was varied by changing the current density and the energization time.
  • an annealed plate (cold rolled steel plate) that was not electroplated and did not adhere Zn to the surface was also prepared.
  • the cold-rolled steel sheet degreased with the degreasing liquid diluted to twice the specified concentration described above is immersed in a surface conditioning liquid (manufactured by Nihon Parkerizing Co., Ltd., PL-ZTH), and a phosphate treatment liquid (Nippon Parkerizing).
  • Chemical conversion treatment was performed by dipping in Palbond PB-L3080 manufactured by Co., Ltd. under conditions of bath temperature: 43 ° C. and treatment time: 120 seconds.
  • the surface of the cold-rolled steel sheet after the chemical conversion treatment is observed with a SEM at 10 magnifications at a magnification of 300 times. Evaluation was made according to the following five grades. 5 points: No scale is observed and the crystals are uniform. 4 points: Slight non-uniformity of the crystal is observed, but no skein is observed. 3 points: Small scale is observed. 2 points: A relatively large scale is observed. 1 point: Many relatively large scales are recognized.
  • the steel plate after the chemical conversion treatment was further applied with a commercially available ED coating (manufactured by Kansai Paint Co., Ltd., GT-10) at a coating thickness: 20 ⁇ m, and a cross cut was put on the coated surface with an NT cutter (registered trademark). Then, it was immersed in warm salt water (5% NaCl, 50 ° C.) for 10 days. The sample after the immersion was covered with a polyester tape to cover the cross-cut portion, and after peeling, the maximum peel width on one side from the cut was measured. The results obtained as described above are shown in Tables 2 to 5 together with the conditions.
  • steels A, B, and C do not contain much Si in the steel plate components, so that good chemical conversion treatment is possible even in the examples where the surface is not subjected to electro-Zn plating (Comparative Examples 1 to 3). Although obtained, the peel width is large and the corrosion resistance after coating is poor.
  • steels D to H contain a large amount of Si, in the examples (Comparative Examples 4 to 8) in which the surface is not plated with Zn, scaling is observed in the chemical crystals, and in particular, the Si amount is 1.5% or more. In G and H, it became the level of the grade 1 in which almost no chemical conversion crystal was formed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

Un placage électrolytique de Zn est effectué sur la surface d'une tôle d'acier laminée à froid de telle sorte que la quantité d'adhésion de Zn est de 100 - 5 000 mg/m², et la tôle d'acier laminée à froid résultante est lavée avec de l'eau puis amenée en contact avec une solution aqueuse contenant P. A cet égard, la concentration en P de la solution aqueuse contenant P est de 0,001 - 2 g/L et la température de la solution aqueuse contenant P se situe dans la plage de 30 - 60°C.
PCT/JP2012/063102 2011-12-27 2012-05-16 Procédé de fabrication d'une tôle d'acier laminée à froid ayant d'excellentes propriétés de conversion chimique et une excellente résistance à la corrosion après revêtement WO2013099316A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201280064512.3A CN104024476B (zh) 2011-12-27 2012-05-16 化成处理性和涂装后耐腐蚀性优异的冷轧钢板的制造方法
KR1020147019016A KR101639926B1 (ko) 2011-12-27 2012-05-16 화성 처리성 및 도장 후 내식성이 우수한 냉연 강판의 제조 방법

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Application Number Priority Date Filing Date Title
JP2011285173A JP5853683B2 (ja) 2011-01-25 2011-12-27 化成処理性および塗装後耐食性に優れた冷延鋼板の製造方法
JP2011-285173 2011-12-27

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WO2013099316A1 true WO2013099316A1 (fr) 2013-07-04

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JP (1) JP5853683B2 (fr)
KR (1) KR101639926B1 (fr)
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AR (1) AR087284A1 (fr)
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WO (1) WO2013099316A1 (fr)

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WO2014013623A1 (fr) * 2012-07-18 2014-01-23 Ｊｆｅスチール株式会社 Procédé permettant de produire une tôle d'acier qui présente d'excellentes propriétés de conversion chimique et une excellente résistance au grippage
JP6079079B2 (ja) * 2012-09-18 2017-02-15 Ｊｆｅスチール株式会社 冷延鋼板およびその製造方法
JP5971155B2 (ja) * 2012-10-11 2016-08-17 Ｊｆｅスチール株式会社 高強度溶融亜鉛めっき鋼板の製造方法および高強度溶融亜鉛めっき鋼板
JP5637230B2 (ja) * 2013-02-28 2014-12-10 Ｊｆｅスチール株式会社 高強度冷延鋼板の製造方法
JP5817770B2 (ja) * 2013-03-26 2015-11-18 Ｊｆｅスチール株式会社 化成処理性および塗装後耐食性に優れ、かつ摺動性も良好な高強度冷延鋼板の製造方法
JP5928437B2 (ja) * 2013-11-05 2016-06-01 Ｊｆｅスチール株式会社 化成処理性および塗装後耐食性に優れた高強度冷延鋼板の製造方法
CN114231822B (zh) * 2021-10-29 2022-11-01 攀钢集团攀枝花钢铁研究院有限公司 提高冷轧汽车板表面可涂装性能的方法

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