Pickling method of metal plate

Details Pickling method of metal plate Pickling method of metal plate

1996-12-31

1999-01-26

Pyon, Harold Y.

Cleaning and liquid contact with solids

Processes

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

134 16, 134 41, 29 8103, B08B 102, B08B 308

Patent

active

058633472

ABSTRACT:
A pickling method which can effectively conduct pickling, and can shorten pickling time. The strip is plastic elongated by 0.1 to 10% before it is introduced into the pickling tank to form cracks. The strip is bent so that a surface strain of the strip is 0.2 to 1 times the plastic elongation during dipping the strip in the acid solution of the pickling tank, thereby making the cracks open and close, and supply of a fresh acid solution and expelling of an exhausted acid solution may be effectively conducted. Scale always contacts with a fresh acid solution by this bending operation, so that a scale dissolution reaction proceeds fast, thereby being capable of shortening the pickling time.

REFERENCES:
patent: 2666282 (1954-01-01), Peterson
patent: 3924428 (1975-12-01), Noe
patent: 4581073 (1986-04-01), Toker et al.
patent: 4872245 (1989-10-01), Kawasaki et al.
patent: 5131126 (1992-07-01), Katsuki et al.

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