Title:
INCLINED ROLLING METHOD FOR SEAMLESS PIPE
Document Type and Number:
Japanese Patent JPH08117817
Kind Code:
A
Abstract:
PURPOSE: To easily prolong the life of a tool for a hot working, such as a plug for rolling a seamless steel pipe to be used under a severe condition like the rolling of a high alloy steel.
CONSTITUTION: In the inclined rolling method for a seamless pipe, plural cooling water spouting-out ports 21 standing opposite each other are provided on a plug surface in plural positions along with a plug moving path in a cooling water bath 13. The quantity of cooling water to be supplied from each cooling water spouting-out port 21, is controlled so that it is gradually and monotonously reduced toward the moving direction of the plug.
Inventors:
YORIFUJI AKIRA
KANAYAMA TARO
KANAYAMA TARO
Application Number:
JP28858694A
Publication Date:
May 14, 1996
Filing Date:
October 31, 1994
Export Citation:
Assignee:
KAWASAKI STEEL CO
International Classes:
B21B19/04; B21B25/04; (IPC1-7): B21B25/04; B21B19/04
Attorney, Agent or Firm:
Shuji Shiokawa
Previous Patent: METHOD FOR CONTROLLING BAR STRIPPING OF RETRACT MANDREL MILL
Next Patent: INCLINED ROLLING METHOD FOR SEAMLESS PIPE
Next Patent: INCLINED ROLLING METHOD FOR SEAMLESS PIPE