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    SURFACE TREATMENT LIQUID FOR PLATED STEEL SHEET TO BE HOT-PRESSED
    1.
    发明公开
    SURFACE TREATMENT LIQUID FOR PLATED STEEL SHEET TO BE HOT-PRESSED 审中-公开
    用于待热压的钢板的表面处理液体

    公开(公告)号：EP3305944A1

    公开(公告)日：2018-04-11

    申请号：EP16803532.7

    申请日：2016-06-03

    申请人： Nippon Steel & Sumitomo Metal Corporation ,  Nihon Parkerizing Co., Ltd.

    发明人： FUJITA, Soshi ,  MAKI, Jun ,  YAMANAKA, Shintaro ,  KUROSAKI, Masao ,  SUZUKI, Tatsuya ,  MIZUNO, Kensuke ,  KOZAKI, Takumi ,  KODAMA, Takahiro

    IPC分类号： C23C28/00 ,  B21D22/20 ,  C23C2/12

    摘要： A surface treatment solution excellent in stability during storage forming a coating for treatment excellent in waterproofness, solvent resistance, and adhesion with a plated steel sheet and able to provide a surface treated steel sheet with hot-pressing lubricity, chemical convertability after hot-pressing, corrosion resistance after coating, and spot weldability, that is, a surface treatment solution for a plated steel sheet to be hot-pressed comprising a ZnO aqueous dispersion (A) and a water dispersible organic resin (B), wherein the ZnO aqueous dispersion (A) comprises water and ZnO particle size having 50 to 300 nm particles, the water dispersible organic resin (B) has a 5 to 45 mgKOH/g acid value and 5 to 300 nm emulsion particle size, and a mass ratio (W A /W B ) of a mass of ZnO particles in the ZnO aqueous dispersion (W A ) to a mass of solid content of the water dispersible organic resin (W B ) is 30/70 to 95/5.

    摘要翻译： 本发明提供一种表面处理液，其在保存时的稳定性优异的同时形成防水性，耐溶剂性和与镀敷钢板的密合性优异的处理用涂膜，并且能够赋予热压润滑性的表面处理钢板，热压后的化学转化处理性， （A）和水分散性有机树脂（B）的热浸镀锌钢板用表面处理液，其中，所述ZnO水性分散液（A）和水分散性有机树脂（B） A）含有粒径为50〜300nm的水和ZnO粒子，水分散性有机树脂（B）的酸值为5〜45mgKOH / g，乳液粒径为5〜300nm，质量比（WA / WB ）的ZnO水分散体（WA）中的ZnO粒子的质量与水分散性有机树脂（WB）的固体成分的质量之比为30/70〜95/5。