Title:
PREPARATION OF HIGH TENSILE ELECTROSEAMED STEEL PIPE EXCELLENT IN STRESS CORROSION CRACKING RESISTANCE
Document Type and Number:
Japanese Patent JPS6096725
Kind Code:
A
Abstract:
PURPOSE: To enhance stress corrosion cracking resistance, by molding a rolled steel plate containing C, Si, Mn, P, S, Nb, V or the like in a predetermined ratio under a predetermined condition before electroseaming welding.
CONSTITUTION: Steel consisting of C≤0.13%, Si≤0.5%, 1W2% Mn, P≤0.02%, S≤0.01%, Nb≤0.05%, V≤0.05%, Ti≤0.04%, N≤0.01%, Ca≤0.006% and the remainder of Fe is subjected to hot finish rolling. After rolling is finished, the steel plate is quenched at a cooling speed of 30°C/sec or more by a run-out table. Subsequently, the quenched steel plate is wound up at 550°C or less. This wound steel plate is molded to be subjected to electroseaming welding.
Inventors:
MURAYAMA HIROSHI
CHIYANO ZENSAKU
YAMAMOTO YASUSHI
YAMAMOTO YOUJI
CHIYANO ZENSAKU
YAMAMOTO YASUSHI
YAMAMOTO YOUJI
Application Number:
JP20100583A
Publication Date:
May 30, 1985
Filing Date:
October 28, 1983
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B21B3/00; C21D8/02; C21D9/52; C22C38/00; (IPC1-7): B21B3/00; C21D9/52
Attorney, Agent or Firm:
Kazuo Ozeki