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    • 25. 发明专利
    • Steel material superior in chemical conversion treatability of worked member, and method for manufacturing the same
    • 工作会员化学转化可处理性中的钢材超高分子及其制造方法
    • JP2010090441A
    • 2010-04-22
    • JP2008262040
    • 2008-10-08
    • Jfe Steel CorpJfeスチール株式会社
    • ISHIGURO YASUHIDESATO AKIO
    • C23C28/00C22C38/00C22C38/04C22C38/58C25D5/26C25D5/36C25D5/48
    • PROBLEM TO BE SOLVED: To provide a steel material superior in the chemical-conversion treatability of a worked member, and to provide a method for manufacturing the same.
      SOLUTION: The steel material preferably includes, by mass%, 0.05% or more C, more than 0.7% Si and 0.8% or more Mn. The manufacturing method includes plating the surface of the steel material with a metal of such a slight plating deposition amount as 10 mg/m
      2 or less. Thus, manufactured steel material does not cause the lowering of the chemical conversion treatability even when the steel material contains more than 0.7% Si, and can prevent the lowering of the chemical conversion treatability due to working, even when the steel material has been subjected to such working as to exceed 2% by a surface distortion. The metal to be plated is preferably Ni, Cu and Mo. The layer plated with the metal of the slight amount is discontinuously formed so as to partially cover the base steel material, and functions as a cationic point when chemical-conversion crystals deposit on the steel material. Accordingly, dense and fine chemical-conversion crystals can be formed thereon.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种在加工构件的化学转化处理性方面优异的钢材,并提供其制造方法。 钢材优选以质量%计含有0.05%以上的C,大于0.7%的Si和0.8%以上的Mn。 制造方法包括用等于或小于10毫克/米2(SP)2以下的微小电镀沉积量的金属镀覆钢材表面。 因此,即使当钢材含有大于0.7%的Si时,制造的钢材也不会导致化学转化处理性的降低,并且即使当钢材已经被接受时,也可以防止由于加工而导致的化学转化处理性降低 这样通过表面失真超过2%。 要镀覆的金属优选为Ni,Cu和Mo。镀有少量金属的层被不连续地形成以部分覆盖基材,并且当化学转化晶体沉积在 钢材。 因此,可以在其上形成致密和精细的化学转化晶体。 版权所有(C)2010,JPO&INPIT
    • 27. 发明专利
    • Steel sheet for welded can
    • 用于焊接罐的钢板
    • JP2007231394A
    • 2007-09-13
    • JP2006056644
    • 2006-03-02
    • Nippon Steel Corp新日本製鐵株式会社
    • HIRANO SHIGERUKAMIMURA KENJI
    • C25D5/26B21B1/22C23C28/00C25D5/36C25D11/38
    • PROBLEM TO BE SOLVED: To provide a Ni-plated steel sheet for a welded can, which reliably shows adequate weldability even when the sheet thickness is as small as 0.19 mm or smaller.
      SOLUTION: A flat of the steel sheet has linear irregularities imparted in parallel to a rolling direction so that the roughness in a direction perpendicular to the rolling direction can be 0.1 to 0.3 μm by a center line average roughness, and the number of peaks with a height of 0.25 μm or higher can be 20 to 200 pieces per centimeter. The steel sheet for the welded can having superior weldability, paint adhesiveness, film adhesiveness and corrosion resistance is produced by the steps of: plating the flat with nickel of 200 to 1,200 mg/m
      2 ; and further imparting a chromate conversion film of 2 to 20 mg/m
      2 in terms of metallic Cr to the outermost surface.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种用于焊接罐的镀镍钢板,即使当板厚度小至0.19mm或更小时,也可靠地显示出足够的焊接性。 解决方案:钢板的平面具有与轧制方向平行的线性不规则性,使得与轧制方向垂直的方向上的粗糙度可以为中心线平均粗糙度为0.1〜0.3μm, 高度为0.25μm以上的峰可以为20〜200个/ cm。 通过以下步骤制造用于具有优异焊接性,涂料粘附性,膜粘附性和耐腐蚀性的焊接罐用钢板:将平板镀镍至200至1,200mg / m 2 SP ; 并且进一步向最外表面赋予以金属Cr计为2〜20mg / m 2的铬酸盐转化膜。 版权所有(C)2007,JPO&INPIT