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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING SEAMLESS STEEL TUBE
Document Type and Number:
Japanese Patent JP2004098101
Kind Code:
A
Abstract:

To suppress the generation of deflected thickness within the range of the specification while improving productivity at the time of manufacturing seamless steel tubes.

When a solid-core round billet is heated in the heating furnace, the minimum in-furnace time is secured in accordance with the deflection thickness specification required by the user based on the first relational expression to show the relationship between deflected heat and deflected thickness made out of empirical data and the second relational expression to show the relationship between deflected heat and billet in-furnace time.


Inventors:
HAMANO TOSHIYUKI
Application Number:
JP2002261386A
Publication Date:
April 02, 2004
Filing Date:
September 06, 2002
Export Citation:
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Assignee:
SANYO SPECIAL STEEL CO LTD
International Classes:
B21B19/04; B21B19/06; B21B37/18; B21B37/78; (IPC1-7): B21B37/78; B21B19/04; B21B19/06; B21B37/18
Attorney, Agent or Firm:
Masayuki Kishida
Mizuno Katsufumi
Ogawa Hidenori