U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Work process for applying a defined surface roughness to a metal strip

Patent 5964115 Issued on October 12, 1999. Estimated Expiration Date: Icon_subject November 5, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2914974

Cold rolled steel sheets having an excellent enamelability and a method for producing said cold rolled steel sheets
Patent #: 3950191
Issued on: 04/13/1976
Inventor: Ito ,   et al.

Roll changing device for rolling mill
Patent #: 4435970
Issued on: 03/13/1984
Inventor: Sekiya

Emulsion type liquid lubricant for metal forming, process for preparing the lubricant and process for metal forming with the lubricant
Patent #: 4657685
Issued on: 04/14/1987
Inventor: Uematsu ,   et al.

Method of lubricating steel strip for cold rolling, particularly temper rolling
Patent #: 5555756
Issued on: 09/17/1996
Inventor: Fischer, et al.

Optimized operation of a two stand reversing rolling mill Patent #: 5806359
Issued on: 09/15/1998
Inventor: Hequet

Inventor

Assignee

Application

No. 187174 filed on 11/05/1998

US Classes:

72/229, To reverse-roll the workpiece72/200With modification or control of temperature of work, tool or machine

Examiners

Primary: Butler, Rodney

Attorney, Agent or Firm

Foreign Patent References

  • 58-86903-A JP 05/12/1983
  • 1-66003-A JP 03/12/1989

International Class

B21B 041/06

Foreign Application Priority Data

1997-11-10 DE

Abstract

A process for applying a defined surface roughness to a metal strip, especially steel strip, for preventing the sticking of strip during subsequent annealing in a bell-type annealing installation includes cold rolling the metal strip in at least one reversing roll stand. The cold rolled metal strip is then guided to a temper rolling stand for wet rolling the cold rolled metal strip through at least one pass for applying the defined surface roughness to the metal strip. For this purpose, the flattening rolls of the temper rolling stand are replaced with rough rolls.

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