Separating contaminants from continuous from surface...

Details Separating contaminants from continuous from surface... Separating contaminants from continuous from surface...

1998-07-23

2001-07-24

Stinson, Frankie L. (Department: 1746)

Cleaning and liquid contact with solids

Processes

Longitudinally traveling work of bar, strip, strand, sheet...

C134S010000, C134S06400P, C134S109000, C118S067000, C118S068000, C118S405000, C118S419000, C118S610000, C118S623000

Reexamination Certificate

active

06264757

ABSTRACT:

INTRODUCTION
This invention relates to preparation of flat-rolled steel for finishing operations; and, more particularly, is concerned with surface cleansing of cold-reduced continuous-strip steel, in preparation for high-speed continuous annealing, prior to subsequent electrolytic plating.
OBJECTS OF THE INVENTION
Primary objects of the invention are to enable removal and permanent separation of surface contaminants from cold-reduced flat-rolled continuous-strip steel.
More specific objects are to provide continuous methods and apparatus for surface cleansing of cold-reduced flat-rolled strip steel by on-line regeneration of cleansing solution so as maintain substantially uniform cleansing solution without requiring periodic disposal of large volumes of contaminated cleansing solution.
Another object of the invention is to avoid any requirement for unscheduled interruption of continuous in-line operations due to cleansing solution conditions.


REFERENCES:
patent: 3617039 (1971-11-01), Fukui et al.
patent: 5062438 (1991-11-01), Micheletti
patent: 5127958 (1992-07-01), Personette
patent: 5348628 (1994-09-01), Ishibashi et al.
patent: 5830282 (1998-11-01), Olashuk
patent: 5879465 (1999-03-01), McKevitt et al.

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