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Title:
GALVANIZED STEEL SHEET EXCELLENT IN SLIDABILITY AND PAINT IMAGE CLARITY
Document Type and Number:
Japanese Patent JP2718627
Kind Code:
B2
Abstract:

PURPOSE: To produce a steel sheet excellent in slidability and paint image clarity by providing fine projection and recess in a specific area range on its surface and regulating the Vickers hardness of a galvanized layer and the sum of recessed part volumes per a unit area to satisfy specific inequalities.
CONSTITUTION: The sheet is a galvanized sheet having fine recessed parts of 0.0001mm2 to 0.01mm2 area on its surface, and whose Vickers hardness(Hv) of a galvanized layer and the sum (w) of recessed part volumes per unit area satisfy inequalities. It is known that the surface hardness of the galvanized layer and the recessed part volumes on a plated surface, that is, an oil retaining quantity per unit area of the surface at the time of pressing can be operated as a parameter in the inequlities, and the paint image clarity and the slidability of a galvanized sheet can be mad compatible with each other. Such a sheet is developed. The galvanized sheet obtained by these processes is excellent in the image clarity after painting and press formability, and it is most suitable for the body of an automobile, especially for the outside plates of door, fender, hood, etc., and the outside plates, etc., of an electric refrigerator.


Inventors:
岩 井 正 敏
浦 井 正 章
有 村 光 史
中 野 博 昭
Application Number:
JP1993000312689
Publication Date:
February 25, 1998
Filing Date:
November 18, 1993
Export Citation:
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Assignee:
株式会社神戸製鋼所
International Classes:
B21B27/00; B21B1/22; B21B27/02; C23C2/06; C23C2/28; C23C30/00; C25D5/26; C25D15/02; (IPC1-7): B21B1/22; B21B27/00; B21B27/02; C23C2/06; C23C2/28; C23C30/00; C25D5/26; C25D15/02
Attorney, Agent or Firm:
明田 莞