Hot-rolled steel strip manufacturing and descaling method and ap

Details Hot-rolled steel strip manufacturing and descaling method and ap Hot-rolled steel strip manufacturing and descaling method and ap

1994-08-11

1995-12-05

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204206, 204209, 204210, C25F 106, C25F 700

Patent

active

054725798

ABSTRACT:
This invention provides a method and an apparatus for removing scales from hot-rolled steel strips to produce steel strips with excellent surface conditions. In a pickling facility to pickle the hot-rolled steel strip, the pickling method of this invention passes an electric current through the continuously fed, hot-rolled steel strip in one or more of a plurality of pickling tanks. A means to supply an electric current is also provided.

REFERENCES:
patent: 3536601 (1970-10-01), Hill et al.
patent: 3627665 (1971-12-01), deLaminne
patent: 4129485 (1978-12-01), Shikata et al.
patent: 4178194 (1979-12-01), Azzerri et al.
patent: 4994157 (1991-02-01), Itoh et al.
patent: 5202002 (1993-04-01), Tsuchinaga et al.
"Mitsubishi Heavy Industry Technique", vol. 29, No. 1 (1992-1) pp. 24 to 29.
"Hitachi Review", vol. 67, No. 4 (1985-4) pp. 41 to 46.
"Mitsubishi Heavy Industry Technique", vol. 2, No. 3 (1965) pp. 289 to 297.

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