Title:
METHOD AND DEVICE FOR MANUFACTURING CHANNEL STEEL WITH PARALLEL FLANGES
Document Type and Number:
Japanese Patent JPH06210301
Kind Code:
A
Abstract:
PURPOSE: To provide a method and device for obtaining a high-quality product having stable dimensions and shape by properly forming a channel steel with parallel flanges.
CONSTITUTION: Universal rolling is executed with lower rolls 49, 49a whose outsides in corner parts 39, 39a are downward inclined at 2-8° by 1-3 times width of flange thickness, gaps 38, 38a between the lower rolls and vertical rolls are taken as 1-6mm at the final target thickness, after rolling the channel steel with right and left vertical rolls 37, 37a whose radii are 200-800mm, edge rolling is executed with the lower rolls 49, 49a with the inclination opposite to the corner parts 39, 39a.
Inventors:
AZUMA ETSUO
ARIIZUMI TAKASHI
FURUKAWA JUN
ARIIZUMI TAKASHI
FURUKAWA JUN
Application Number:
JP35554291A
Publication Date:
August 02, 1994
Filing Date:
December 24, 1991
Export Citation:
Assignee:
NIPPON KOKAN KK
International Classes:
B21B1/095; B21B1/08; B21B13/02; B21B13/10; B21B27/02; (IPC1-7): B21B1/08; B21B13/02; B21B13/10; B21B27/02
Attorney, Agent or Firm:
Ichiichi Shirakawa