Method for continuous pickling of steel materials on a treatment

Details Method for continuous pickling of steel materials on a treatment Method for continuous pickling of steel materials on a treatment

1992-11-06

1994-07-26

Breneman, R. Bruce

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 41, C23G 108

Patent

active

053324463

ABSTRACT:
A method for pickling steel materials, in particular continuously on a treatment line, comprising a shot-blasting operation, a preparation operation, a pickling operation and a passivation operation, in which line the preparation operation is carried out by bringing the materials into contact with at least one 2 to 10N sulphuric acid solution, and in which line the pickling operation is carried out by bringing the materials into contact with at least one solution containing 1 to 10% by weight of hydrofluoric acid and Fe.sup.2+ and Fe.sup.3+ ions. No figure.

REFERENCES:
Patent Ab. of Japan Oct. 1986 Suehiro "Manf. of Cr Stainless Steel Plate" JP-A-61 117291.
Translations of Pertinent Portion of of Above Foreign Patents.
Patent Abstracts of Japan, vol. 10, No. 303 (C-378) (2359), Oct. 16, 1986, & JP-A-61 117 291, Toshiyuki Suehiro, "Manufacture of CR Stainless Steel Plate".

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