Frishauf, Holtz, Goodman & Chick, P.C.
Steel sheet and method for manufacturing the same
The method for manufacturing steel sheet comprises the steps of: forming a sheet bar; forming a steel strip; primary-cooling; air-cooling; secondary-cooling; and coiling. The sheet bar is finish-rolled at finish temperatures of (Ar3 transformation point &#8722;20&deg; C.) or more. The primary cooling cools the finish-rolled steel strip at cooling speeds of more than 120&deg; C./sec down to the temperatures ranging from 500 to 800&deg; C.
NKK Corporation
C C
C21D C21D
additional inventional
Sadanori Yoichi Tadashi Hiroyasu
Imada Motoyashiki Inoue Kikuchi