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    • 1. 发明公开
    • RESIN-CHROMATE COMPOSITION AND SURFACE-TREATED METAL SHEET
    • HARZ-CHROMATZUSAMMENSETZUNG UNDOBERFLÄCHENBEHANDELTESSTAHLBLECH
    • EP0787831A4
    • 1998-11-11
    • EP96926621
    • 1996-08-09
    • NIPPON STEEL CORPTOYO BOSEKI
    • NAKAZAWA MAKOTOIZAKI TERUAKIHAYASHI KIMITAKASUZUKI SHINICHIMIYAUCHI YUJIROYOSHIDA KENGOODASHIMA HISAOTAKAHASHI TOMOMISHIBABUKI SYUJIFUJIOKA YUJIYAMAZAKI MAKOTOTADOKORO KENICHIRO
    • B05D7/14C09D5/08C23C22/28C23C22/33C08L57/00
    • C09D5/08B05D7/14C23C22/28C23C22/33
    • A resin-chromate composition mainly comprising an emulsion of (a) an organic polymer composed of ethylenically unsaturated compounds in an aqueous medium, (b) a water-soluble chromium compound, and (c) a mineral acid, characterized in that the content of (a1) ethylenically unsaturated carboxylic acid components constituting the organic polymer (a) is more than 10 wt.% but below 30 wt.% based on the weight (in terms of solid matter) of the organic polymer (a), that of (a2) ethylenically unsaturated hydroxylated compound components constituting the polymer (a) is 0 wt.% or above but below 3 wt.% based thereon, and the balance is composed of (a3) ethylenically unsaturated compound components bearing neither carboxyl nor hydroxyl groups and that the content of components forming C3-C7 monocarboxylic acids in an aqueous solution of chromic acid and/or a chromate coat is 20 wt.% or below based on the weight (in terms of solid matter) of the organic polymer; and a metal sheet surface-treated with this composition.The above chromate composition is excellent in bath stability and smelling characteristics and the metal sheet surface-treated with the composition does not produce any putrid smell and is excellent in corrosion resistance, prevention of leaching of chromium, resistance to alkali, adhesion of paint, and appearance and quality.
    • 一种树脂铬酸盐组合物,主要包含(a)在水性介质中由烯键式不饱和化合物构成的有机聚合物的乳液,(b)水溶性铬化合物和(c)无机酸,其特征在于, (a1)构成有机聚合物(a)的烯键式不饱和羧酸成分,相对于有机聚合物(a)的重量(以固体成分计)为基准,为(10)重量%以下, a2)构成聚合物(a)的烯键式不饱和羟基化合物组分相对于其为0重量%以上但低于3重量%,余量由(a3)不具有羧基和羟基的烯键式不饱和化合物组分组成, 基于有机聚合物的重量(以固体物质计),在铬酸和/或铬酸盐涂层的水溶液中形成C 3 -C 7单羧酸的组分的含量为20重量%以下。 和用该组合物表面处理的金属片。 上述铬酸盐组合物的浴稳定性和气味特性优异,用组合物表面处理的金属片不产生腐臭,耐腐蚀性优异,防止铬浸出,耐碱性,涂料粘附性和 外观和质量。
    • 2. 发明申请
    • HIGH-STRENGTH ALLOYED ALUMINUM-SYSTEM PLATED STEEL SHEET AND HIGH-STRENGTH AUTOMOTIVE PART EXCELLENT IN HEAT RESISTANCE AND AFTER-PAINTING CORROSION RESISTANCE
    • 高强度合金铝系列钢板和高强度汽车零部件耐热性和耐后腐蚀性
    • WO02103073A2
    • 2002-12-27
    • PCT/JP0205978
    • 2002-06-14
    • NIPPON STEEL CORPSUEHIRO MASAYOSHIMAKI JUNFUDA MASAHIROMIYAKOSHI TOSHIHIROTAKADA YOSHIHISAEGUCHI HARUHIKOIZAKI TERUAKIKUSUMI KAZUHISA
    • SUEHIRO MASAYOSHIMAKI JUNFUDA MASAHIROMIYAKOSHI TOSHIHIROTAKADA YOSHIHISAEGUCHI HARUHIKOIZAKI TERUAKIKUSUMI KAZUHISA
    • C23C2/12C23C28/00C23C2/00
    • C23C2/12
    • The present invention provides a hot press method used for producing a high-strength member for an automobile and, in particular, a part which requires high-strength, such as an undercarriage component of an automobile. More specifically, the present invention provides an aluminum plated steel sheet or an aluminum-zinc plated steel sheet suitable for high temperature forming (hot forming) wherein high strength is obtained after high temperature forming, and a method of producing the same. Also, the present invention provides a hot dip aluminum plated steel sheet which suppresses the alloying reaction of a plated layer during press forming and has beautiful appearance, and an aluminum-system plated steel sheet for hot press having excellent after-painting corrosion resistance. Concretely, the present invention is a high-strength aluminum-system plated steel sheet excellent in heat resistance and after-painting corrosion resistance, characterized by having an Fe-Al-system coating containing, in mass, Mn and Cr of more than 0.1% in total on the surface of the steel containing, in mass, C: 0.05 to 0.7%, Si: 0.05 to 1%, Mn: 0.5 to 3%, P: not more than 0.1%, S: not more than 0.1% and Al: not more than 0.2%, and, in addition, one or more element(s) selected from among Ti: 0.01 to 0.8%, Cr: not more than 3% and Mo: not more than 1%, so as to satisfy the following expression (1): Ti + 0.5xMn + Cr + 0.5xMo > 0.4 ... 1
    • 本发明提供一种用于制造汽车用高强度部件的热压法,特别是要求高强度的部件,例如汽车的起落架部件。 更具体地,本发明提供一种适用于在高温成形后获得高强度的高温成形(热成型)的镀铝钢板或镀铝锌钢板及其制造方法。 另外,本发明提供一种热压镀铝钢板,其在冲压成形时抑制镀层的合金化反应,外观美观,并且具有优异的耐油蚀性能的热压铝系镀覆钢板。 具体地说,本发明是耐热性和耐后蚀性优异的高强度铝系电镀钢板,其特征在于,具有以质量计含有大于0.1%的Mn和Cr的Fe-Al体系涂层, 在钢的表面总计含有C:0.05〜0.7%,Si:0.05〜1%,Mn:0.5〜3%,P:0.1%以下,S:0.1%以下,以及 Al:0.2%以下,Ti:0.01〜0.8%,Cr:3%以下,Mo:1%以下的1种以上的元素,满足 以下表达式(1):Ti + 0.5×Mn + Cr + 0.5xMo> 0.4 ... 1