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WO2020213201A1 - Feuille d'acier de presse à chaud et élément de presse à chaud - Google Patents

Feuille d'acier de presse à chaud et élément de presse à chaud Download PDF

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Publication number
WO2020213201A1
WO2020213201A1 PCT/JP2019/045766 JP2019045766W WO2020213201A1 WO 2020213201 A1 WO2020213201 A1 WO 2020213201A1 JP 2019045766 W JP2019045766 W JP 2019045766W WO 2020213201 A1 WO2020213201 A1 WO 2020213201A1
Authority
WO
WIPO (PCT)
Prior art keywords
hot
steel sheet
less
plating layer
value
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.)
Ceased
Application number
PCT/JP2019/045766
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English (en)
Japanese (ja)
Inventor
佳子 中原
田中　稔
鈴木　幸子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Priority to JP2020513937A priority Critical patent/JPWO2020213201A1/ja
Publication of WO2020213201A1 publication Critical patent/WO2020213201A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • 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
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
    • 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

Definitions

  • the present invention relates to a hot press steel plate and a hot press member.
  • the present invention relates to a hot press steel plate and a hot press member having excellent corrosion resistance and weldability.
  • Patent Document 1 describes a hot-pressed member having excellent corrosion resistance in which a steel plate coated with Zn or a Zn-based alloy is hot-pressed and a Zn-Fe-based compound or a Zn-Fe-Al-based compound is provided on the surface.
  • the manufacturing technology is disclosed.
  • Patent Document 2 by hot pressing a steel sheet having a ZnNi alloy plating layer, a Ni diffusion region exists on the surface layer of the steel sheet, and a metal corresponding to the ⁇ phase of the Zn—Ni alloy is present on the Ni diffusion region.
  • a hot press member having an inter-compound layer and a ZnO layer and having excellent scale resistance, coating adhesion, post-coating corrosion resistance, and hydrogen penetration resistance is disclosed.
  • Patent Document 3 by coating a Zn-based galvanized steel sheet with a silicone resin film having a silanol group, the evaporation of Zn during temperature rise before hot pressing is suppressed by the barrier effect.
  • the technology is disclosed.
  • the silicone resin film described in Patent Document 3 is limited to a resin having only a silanol group because a compound that contributes to improvement in corrosion resistance is not produced in a resin containing an organic group other than a silanol group.
  • Patent Document 4 elements such as Al, Mg, and Ca, which are more easily oxidized than Zn, are added to the Zn-based plating layer, and the oxide layer of these easily oxidizable elements is Znized during temperature rise before hot pressing.
  • a technique for preventing the evaporation of Zn by forming it on the surface layer of a plating layer is disclosed. It should be noted that it is difficult to add an easily oxidizing element to the plating layer by electroplating, and it can be produced only by hot-dip galvanizing.
  • the Zn-based galvanized steel sheet is held in the middle for 5 to 1000 seconds at a temperature of 400 ° C. or higher and lower than the Ac3 transformation point during temperature rise before hot pressing to obtain a solid-dissolved phase of Fe and Zn.
  • a hot pressing technique for suppressing the evaporation of Zn during temperature rise before hot pressing is disclosed.
  • the Zn-based galvanized steel sheets for hot pressing described in Patent Documents 1 to 5 require a long time for heating before hot pressing using an electric furnace, so that Zn evaporation is unavoidable. Further, if the required time is long, the oxidation of Zn is accelerated, and ZnO having high electrical resistance is formed thickly on the plating surface layer. As a result, although resistance spot welding is possible for hot-pressed members, there is a problem that a part of the overheated steel sheet is likely to be melted and scattered, and the appropriate welding condition range is narrowed. It will occur. Further, in the technique described in Patent Document 5, a holding furnace must be installed separately from the heating furnace, and the heating time is forced to be extended, so that there remains a problem in productivity.
  • an object of the present invention is to provide a hot-pressed steel plate and a hot-pressed member having excellent corrosion resistance and weldability.
  • the present inventors conducted diligent research and obtained the following findings.
  • (2) The heating rate of the hot-pressed steel sheet during heating has a correlation with the glossiness (G value) of the steel sheet surface, and when the G value of the hot-pressed steel sheet is 10 or less, the heating rate is improved. The heating time can be shortened.
  • the heating rate of the hot-pressed steel sheet during heating has a correlation with the brightness (L value) of the steel sheet surface, and when the L value of the hot-pressed steel sheet is 50 or less, the heating rate is further improved.
  • the heating time can be shortened.
  • (4) By manufacturing a hot-pressed member using a hot-pressed steel sheet having a G value of 10 or less, the amount of metallic Zn remaining in the Zn-based plating layer after hot-pressing.
  • a hot-pressed member having excellent weldability can be obtained by preventing a decrease and ensuring excellent corrosion resistance and preventing ZnO from being formed thickly.
  • a hot-pressed steel sheet having a Zn-based plating layer having an adhesion amount of 30 to 90 g / m 2 on at least one surface of the steel sheet, and the glossiness (G value) of the surface of the hot-pressed steel sheet. ) Is 10 or less, a steel sheet for hot pressing.
  • N Contains 0.01% or less, The steel sheet for hot pressing according to any one of [1] to [4], wherein the balance has a component composition of Fe and unavoidable impurities. [6] The steel sheet is in mass%. Nb: 0.05% or less, Ti: 0.05% or less, B: 0.0002 to 0.005%, Cr: 0.1-0.3%, Sb: The steel sheet for hot pressing according to [5], which further contains at least one selected from 0.003 to 0.03%.
  • Hot press with 2.0 or less the amount of metal Zn in the Zn-based plating layer is 25 g / m 2 or more, and the amount of Zn present as ZnO in the Zn-based plating layer is 2.5 g / m 2 or less.
  • the hot press member according to [7] wherein the brightness (L value) of the surface of the hot press member is 40 or less.
  • the hot press member manufactured by using the hot press steel plate of the present invention is suitable for a structural member for an automobile skeleton.
  • the steel sheet for hot pressing of the present invention has a Zn-based plating layer having an adhesion amount of 30 to 90 g / m 2 on at least one surface of the steel sheet, and the glossiness (G value) of the surface of the steel sheet for hot pressing. Is 10 or less.
  • Coating weight of Zn-plated steel sheet of the deposition amount is 30 ⁇ 90g / m 2 Zn-based plating layer present invention
  • the amount of deposition per side is to 30 ⁇ 90g / m 2.
  • the amount of adhesion is preferably 50 g / m 2 or more, and more preferably 70 g / m 2 or more.
  • the composition of the Zn-based plating layer is not particularly limited as long as the main component of the plating layer is Zn from the viewpoint of rust prevention, but the Zn—Ni alloy plating layer, the Zn plating (GI) layer, and the alloyed hot-dip Zn plating Any one of the (GA) layer and the Zn—Al alloy plating layer is preferable.
  • the Zn-based plating layer preferably contains 10 to 25% by mass of Ni, and the balance is a Zn—Ni alloy plating layer composed of Zn and unavoidable impurities.
  • a ⁇ phase having a crystal structure of any one of Zn 2 Ni 11 , Zn Ni 3 , and Zn 5 Ni 21 having a high melting point is formed. Will be done.
  • melting of the plating during hot pressing, evaporation and oxidation of Zn are suppressed, and corrosion resistance is improved.
  • the Ni content to 10 to 25% by mass it is possible to suppress the generation of scale during hot pressing, and it is possible to suppress damage to members and dies due to this, so that productivity is also excellent.
  • the Zn-based plating layer is preferably a Zn—Al alloy plating layer containing 0.5 to 20% by mass of Al and the balance being Zn and unavoidable impurities.
  • the Al content in the Zn—Al alloy plating layer is less than 0.5% by mass, the ratio of Al on the surface of the plating layer becomes too small, and the coverage of the dense corrosion products containing Al decreases, so that the corrosive environment The barrier effect on the permeation of corrosive factors underneath may be reduced, resulting in reduced corrosion resistance.
  • the Al content exceeds 20% by mass, the ratio of Zn on the surface of the plating layer becomes too small, and the sacrificial anticorrosion effect due to Zn decreases, so that the corrosion resistance may decrease.
  • the glossiness (G value) of the surface of the steel sheet for hot pressing is 10 or less.
  • the faster the heating rate and the shorter the required heating time the more in the Zn-based plating layer. Evaporation and oxidation of Zn are suppressed.
  • the corrosion resistance and weldability of the hot pressed member are improved.
  • heating before hot pressing by an electric furnace is a method using radiant heat. Therefore, it is considered that the rate of temperature rise of the hot-pressed steel sheet is improved by improving the emissivity (also referred to as absorption rate) of the hot-pressed steel sheet, that is, lowering the specular reflectance indicated by the G value. ..
  • the present inventors have a shorter temperature rise rate than a steel sheet having a G value of more than 10, and the evaporation and oxidation of Zn in the Zn-based plating layer are suppressed. Therefore, it has been found that excellent corrosion resistance and weldability can be obtained. Therefore, in the present invention, the G value of the surface of the steel sheet for hot pressing is set to 10 or less. The G value is preferably 7 or less.
  • the brightness (L value) of the surface of the hot-pressed steel sheet is 50 or less.
  • the heating rate during heating before hot pressing is also improved.
  • the corrosion resistance and weldability of the hot press member are improved.
  • the present inventors are more excellent in hot pressing steel sheets having an L value of 50 or less because the evaporation and oxidation of Zn in the Zn-based plating layer are further suppressed. It was found that corrosion resistance and weldability can be obtained. Therefore, in the present invention, it is preferable that the L value of the surface of the steel sheet for hot pressing is 50 or less.
  • the L value is more preferably 40 or less.
  • the base steel plate of the Zn-based plating layer may be, for example, by mass%, C: 0.20 to 0.35%. , Si: 0.1-0.5%, Mn: 1.0-3.0%, P: 0.02% or less, S: 0.01% or less, Al: 0.1% or less, N: 0
  • a steel sheet containing 0.01% or less and having a component composition in which the balance is composed of Fe and unavoidable impurities can be used.
  • the steel plate may be either a cold-rolled steel plate or a hot-rolled steel plate. The reasons for limiting each component are described below.
  • C 0.20 to 0.35% C improves the strength by forming martensite or the like as a steel structure. 0.20% or more is required to obtain a strength exceeding 1470 MPa class. On the other hand, if it exceeds 0.35%, the toughness of the spot welded portion deteriorates. Therefore, the amount of C is preferably 0.20 to 0.35%.
  • Si 0.1-0.5% Si is an effective element for strengthening steel to obtain a good material. For that purpose, 0.1% or more is required. On the other hand, if it exceeds 0.5%, the ferrite is stabilized and the hardenability is lowered. Therefore, the amount of Si is preferably 0.1 to 0.5%.
  • Mn 1.0 to 3.0%
  • Mn is an element effective for increasing the strength of steel. In order to secure the mechanical properties and strength, it is necessary to contain 1.0% or more. On the other hand, if it exceeds 3.0%, the surface thickening at the time of annealing increases, and it becomes difficult to secure the plating adhesion. Therefore, the amount of Mn is preferably 1.0 to 3.0%.
  • the amount of P exceeds 0.02%, the balance between strength and ductility is lowered through deterioration of local ductility due to grain boundary embrittlement due to P segregation to austenite grain boundaries during casting. Therefore, the amount of P is preferably 0.02% or less.
  • S 0.01% or less S becomes an inclusion such as MnS and causes deterioration of impact resistance and cracking along the metal flow of the welded portion. Therefore, it is desirable to reduce it as much as possible, and it is preferably 0.01% or less. Further, in order to secure good stretch flangeability, it is more preferably 0.005% or less.
  • the amount of Al is preferably 0.1% or less.
  • N 0.01% or less
  • the amount of N is preferably 0.01% or less.
  • Nb 0.05% or less
  • Ti 0.05% or less
  • B 0.0002 to 0.005%
  • Cr 0.1 to 0.3%
  • Sb 0.003 to 0.03%
  • Nb 0.05% or less Nb is an effective component for strengthening steel, but if it is contained in excess, the shape freezing property is lowered. Therefore, when Nb is contained, it is set to 0.05% or less.
  • Ti 0.05% or less Ti is also effective for strengthening steel like Nb, but there is a problem that shape freezing property is lowered when it is contained in an excessive amount. Therefore, when Ti is contained, it is set to 0.05% or less.
  • B 0.0002 to 0.005% Since B has an effect of suppressing ferrite formation and growth from austenite grain boundaries, it is preferable to add 0.0002% or more. On the other hand, the addition of excess B greatly impairs moldability. Therefore, when B is contained, it is set to 0.0002 to 0.005%.
  • Cr 0.1-0.3% Cr is useful for strengthening steel and improving hardenability. In order to exhibit such an effect, addition of 0.1% or more is preferable. On the other hand, since the alloy cost is high, addition of more than 0.3% causes a significant cost increase. Therefore, when Cr is contained, it is set to 0.1 to 0.3%.
  • Sb 0.003 to 0.03% Sb also has the effect of suppressing decarburization of the surface layer of the steel sheet during the hot pressing process. In order to exhibit such an effect, it is necessary to add 0.003% or more. On the other hand, if the amount of Sb exceeds 0.03%, the rolling load is increased and the productivity is lowered. Therefore, when Sb is contained, it is set to 0.003 to 0.03%.
  • the rest other than the above consists of Fe and unavoidable impurities.
  • the steel sheet for hot pressing of the present invention can be manufactured by subjecting a Zn-based plated steel sheet to surface processing such as wet blasting, sand blasting, shot blasting, and shot peening. In these surface processing, it is possible to manufacture a steel sheet for hot pressing having a desired G value and L value by changing various conditions such as the type of abrasive particles, particle size, injection speed, air pressure, and number of injections. it can.
  • the hot-pressed member of the present invention is a hot-pressed member having a Zn-based plating layer having an adhesion amount of 30 to 90 g / m 2 on at least one surface of the steel plate, and has a glossiness on the surface of the hot-pressed member.
  • the (G value) is 2.0 or less
  • the amount of metal Zn in the Zn-based plating layer is 25 g / m 2 or more
  • the amount of Zn present as ZnO in the Zn-based plating layer is 2.5 g / m 2 or less. It is characterized by that.
  • the amount of metal Zn in the Zn-based plating layer is 40 g / m 2 or more, and the amount of Zn present as ZnO in the Zn-based plating layer is 2.0 g / m 2 or less. Since the hot press member of the present invention requires only a short heating time before the hot press, the amount of metal Zn remaining in the Zn-based plating layer after the hot press does not decrease, and excellent corrosion resistance can be ensured. In addition, the hot-pressed member of the present invention is excellent in weldability because it can prevent ZnO from being formed thickly on the plating surface layer.
  • the brightness (L value) of the surface of the hot press member is preferably 40 or less.
  • the hot-pressed steel sheet of the present invention can be manufactured by a method called a direct process in which hot-pressing and cooling are performed after heating to the temperature range of Ac 3 transformation point to 1000 ° C. preferable.
  • a heating method using an electric furnace for heating before hot pressing. If the heating temperature is less than the Ac 3 transformation point, quenching of the steel sheet may be insufficient and the desired strength may not be obtained. Further, when the heating temperature exceeds 1000 ° C., not only is it uneconomical in terms of energy, but also the occurrence of point-like defects becomes remarkable, and the corrosion resistance deteriorates.
  • the time required for heating varies depending on the type of plating, but is preferably 200 seconds or less. Further, cooling after the hot press working may be performed by using a mold at the same time as the hot press working, or may be performed by using a refrigerant such as water at the same time as or immediately after the hot pressing work.
  • a cold-rolled steel sheet A or B having the composition shown in Table 1 and having the balance composed of Fe and unavoidable impurities and having a thickness of 2.0 mm was used as the base steel sheet.
  • Various Zn-based platings were applied to the surface of the cold-rolled steel sheet by electroplating and hot-dip plating so as to form an adhesion amount of 30 to 90 g / m 2 , to obtain a Zn-based plated steel sheet.
  • electroplating the metal salt ratio and the current value in the bath were adjusted so as to obtain a desired composition, and in hot dip galvanizing, the bath composition, wiping speed, and time were adjusted.
  • each Zn-based plated steel sheet was subjected to surface processing such as wet blasting, sandblasting, shot blasting, and shot peening to obtain a hot-pressed steel sheet having the G and L values shown in Table 1.
  • surface processing such as wet blasting, sandblasting, shot blasting, and shot peening to obtain a hot-pressed steel sheet having the G and L values shown in Table 1.
  • the G value the 60-degree mirror surface glossiness was measured using a glossiness meter by a method conforming to JIS Z8741.
  • the L value was measured by a spectroscopic reflection measurement method (SCI method) based on JIS J 5600.
  • a 210 mmC ⁇ 330 mmL test piece was sampled from the hot-pressed steel sheet subjected to the above surface processing, and heat-treated in an electric furnace.
  • the furnace temperature is set to 990 ° C
  • a thermocouple is attached to the steel sheet to monitor the temperature of the steel sheet, and when the steel sheet reaches 900 ° C, it is taken out, air-cooled to 700 ° C, and then hot pressed with a hat die. Was carried out.
  • the time required for heating was defined as the time from when the steel sheet was placed in the furnace until it reached 900 ° C.
  • the shape of the part after molding is a flat portion length of 100 mm on the upper surface, a flat portion length of 50 mm on the side surface, and a flat portion length of 50 mm on the lower surface.
  • the bending R of the mold is 7R for both the upper shoulders and the lower shoulders.
  • the amount of metal Zn in the Zn-based plating layer and the amount of Zn in ZnO in the obtained hot press member were quantified as follows. A 30 ⁇ 30 mm analytical sample was taken from the obtained hot-pressed member, ZnO on the plating surface was peeled off with ammonium dichromate, and the solution diluted with hydrochloric acid was subjected to ZnO in ZnO by ICP emission spectrometry. I asked for the amount. Further, the sample after ZnO peeling was subjected to plating stripping with hydrochloric acid containing no inhibitor, and the amount of metallic Zn remaining in the stripping solution was determined by ICP emission spectrometry.
  • the mating test piece in which two test pieces of 70 ⁇ 150 mm and 50 ⁇ 150 mm are joined by spot welding is treated with zinc phosphate as a chemical conversion treatment.
  • Nippon Parkerizing Co., Ltd .; PB-SX35 PB-SX35
  • cation electrodeposition coating Kansai Paint Co., Ltd .; GT-100
  • the end face and the back surface were masked, and a cycle corrosion test under the following conditions was carried out for 120 cycles based on the SAE J2334 standard.
  • ⁇ Cycle conditions Salt water immersion (0.5% by mass NaCl + 0.1% by mass CaCl 2 + 0.075% by mass NaHCO 3 , 15 minutes) ⁇ Drying step (RH 50%, 60 ° C, 17 hours 45 minutes) ⁇ Wetting step (RH 90%, 50 ° C, 6 hours) Then, the welded portion of the combined test piece was cut out with a drill, and the corrosion product was dissolved and removed with a hydrochloric acid solution. Next, the inside of the mating part was divided into eight equal parts, the plate thickness of the corroded part was measured with a point micrometer in each part, and the plate thickness reduction due to corrosion in each part was determined from the difference from the masked healthy part. I asked.
  • Corrosion depth is 0.1 mm or less
  • Corrosion depth is more than 0.1 mm and 0.3 mm or less
  • Corrosion depth is more than 0.3 mm

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  • 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)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Le but de la présente invention est de fournir une tôle d'acier de presse à chaud et un élément de presse à chaud ayant une résistance à la corrosion et une soudabilité exceptionnelles.　Une feuille d'acier pressée à chaud ayant une couche de placage à base de Zn sur au moins une surface d'une feuille d'acier, la couche de placage à base de Zn ayant une adhésivité de 30 à 90 g/m2, la brillance (valeur G) de la surface de la feuille d'acier de presse à chaud étant inférieure ou égale à 10.
PCT/JP2019/045766 2019-04-18 2019-11-22 Feuille d'acier de presse à chaud et élément de presse à chaud Ceased WO2020213201A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020513937A JPWO2020213201A1 (ja) 2019-04-18 2019-11-22 熱間プレス用鋼板および熱間プレス部材

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JP2019-079249 2019-04-18
JP2019079249 2019-04-18

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WO2020213201A1 true WO2020213201A1 (fr) 2020-10-22

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Citations (6)

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Publication number Priority date Publication date Assignee Title
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JP2010121181A (ja) * 2008-11-20 2010-06-03 Jfe Steel Corp 熱間プレス加工用鋼板
WO2011016518A1 (fr) * 2009-08-06 2011-02-10 新日本製鐵株式会社 Plaque métallique pour un chauffage par rayonnement, son procédé de fabrication et métal traité ayant une partie présentant une résistance différente et son procédé de fabrication
JP2013503254A (ja) * 2009-08-25 2013-01-31 ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフト 腐食に対する保護を与える金属コーティングが施された鋼部材を製造する方法、および鋼部材
WO2013132816A1 (fr) * 2012-03-07 2013-09-12 Ｊｆｅスチール株式会社 Tôle d'acier destinée à l'emboutissage à chaud, son procédé de fabrication et procédé pour la production d'un élément embouti à chaud l'utilisant
JP2015527198A (ja) * 2012-05-03 2015-09-17 マグナ インターナショナル インコーポレイテッド 非金属コーティングが被覆された金属薄板からなる自動車コンポーネンツ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010005121A1 (fr) * 2008-07-11 2010-01-14 新日本製鐵株式会社 Tôle d’acier plaquée d’aluminium pour formage à chaud à la presse avec chauffage rapide, processus de production associé, et procédé de formage à chaud à la presse associé avec chauffage rapide
JP2010121181A (ja) * 2008-11-20 2010-06-03 Jfe Steel Corp 熱間プレス加工用鋼板
WO2011016518A1 (fr) * 2009-08-06 2011-02-10 新日本製鐵株式会社 Plaque métallique pour un chauffage par rayonnement, son procédé de fabrication et métal traité ayant une partie présentant une résistance différente et son procédé de fabrication
JP2013503254A (ja) * 2009-08-25 2013-01-31 ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフト 腐食に対する保護を与える金属コーティングが施された鋼部材を製造する方法、および鋼部材
WO2013132816A1 (fr) * 2012-03-07 2013-09-12 Ｊｆｅスチール株式会社 Tôle d'acier destinée à l'emboutissage à chaud, son procédé de fabrication et procédé pour la production d'un élément embouti à chaud l'utilisant
JP2015527198A (ja) * 2012-05-03 2015-09-17 マグナ インターナショナル インコーポレイテッド 非金属コーティングが被覆された金属薄板からなる自動車コンポーネンツ

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