Title:
BATH ROLL FOR HOT-DIP METAL COATING
Document Type and Number:
WIPO Patent Application WO/2008/102918
Kind Code:
A1
Abstract:
A bath roll for use in hot-dip metal coating line, especially hot-dip zinc coating
line, that even in use over a prolonged period of time, is free from dross sticking
to the roll surface and hence is capable of maintaining the quality of steel sheet.
The bath roll for hot-dip metal coating is one having continuous asperity provided
in the circumferential direction of the surface of roll base material, characterized
in that the asperity has a pitch (P) of 1 to 10 mm, a depth to bottom portion (t) of
0.2 to 5 mm being a half of the pitch (P) or less and, in cross-sectional view, a curvature
radius of apical portion (R) of 0.1 mm or greater and a curvature radius of bottom
portion (R') satisfying the formula: 1.5R≤R'≤P2/(8t)-R+t/2
(a) and that the angle (θ) made by mutually adjacent straight lines linking
the curve point of the apical portion with the curve point of the bottom portion
is 90° or greater.
Inventors:
KURISU YASUSHI (JP)
SHIGEMITSU TATSUHIRO (JP)
MISHIMA YUKI (JP)
MIGITA ATSUSHI (JP)
SHIGEMITSU TATSUHIRO (JP)
MISHIMA YUKI (JP)
MIGITA ATSUSHI (JP)
Application Number:
PCT/JP2008/053454
Publication Date:
August 28, 2008
Filing Date:
February 21, 2008
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
NIPPON STEEL HARDFACING (JP)
KURISU YASUSHI (JP)
SHIGEMITSU TATSUHIRO (JP)
MISHIMA YUKI (JP)
MIGITA ATSUSHI (JP)
NIPPON STEEL HARDFACING (JP)
KURISU YASUSHI (JP)
SHIGEMITSU TATSUHIRO (JP)
MISHIMA YUKI (JP)
MIGITA ATSUSHI (JP)
International Classes:
C23C2/00; C23C4/06; C23C4/10; C23C4/18
Foreign References:
| JPH0374654U | 1991-07-26 | |||
| JPH0413854A | 1992-01-17 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (Toranomon 37 Mori Bldg.5-1, Toranomon 3-chom, Minato-ku Tokyo 23, JP)
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