Cold rolling method

Metal deforming – With exposure of work to gas – vapor – mist – or modified...

Reexamination Certificate

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C072S042000, C072S201000

Reexamination Certificate

active

06874344

ABSTRACT:
The present invention relates to a method for cold-rolling metallic rolling stock (4), in which the rolling stock (4) passes through the roll nip (3) between oppositely driven rollers (2) at room temperature in order to undergo a plastic shape change. To avoid the problems caused by the use of liquid coolants and to achieve an improved surface quality of the rolling stock (4), the invention proposes that inert gas, which is at a lower temperature than the rolling-stock temperature in the roll nip, is blown into the region of the roll nip (3). The invention also relates to a cold-rolling stand for carrying out this method.

REFERENCES:
patent: 2342199 (1944-02-01), Hurtt
patent: 3276234 (1966-10-01), Physioc, III
patent: 4247047 (1981-01-01), Schaming
patent: 4392367 (1983-07-01), Bald
patent: 4830683 (1989-05-01), Ferguson
patent: 4885042 (1989-12-01), Kenmochi et al.
patent: 5694799 (1997-12-01), Wolpert et al.
patent: 5799523 (1998-09-01), Seidel et al.
patent: 5830535 (1998-11-01), Junius et al.
patent: 5921487 (1999-07-01), Junius
patent: 3150996 (1983-03-01), None
patent: 55086602 (1980-06-01), None
patent: 337163 (1973-01-01), None

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