US 5,292,374 A · Process and plant for pickling stainless steel strip

Abstract

In a process and plant for pickling steel strip, a highly refined steel strip is delivered in the form of a coil, uncoiled by an uncoiling hasp 1 and advanced through at least one predescaling plant 3, pickling sections and a rinsing plant 7 to a recoiling hasp 9 or a transverse cutting plant. The strip is clamped to the recoiling hasp 9 ,--,--; recoiled and drawn solely thereby or in conjunction with other driven treatment rolls through the treatment plant or is cut into sheets by the transverse cutting plant. The plant comprises at least one elongated, preferably shallow pickling vat having a supporting structure of steel, glass fibre reinforced synthetic resin or polypropylene and a lining of acid and abrasion resistant material including PVC, carbon bricks, graphite filled and/or aluminium oxide filled polyester resin.

Claims15

Dependent claims

A process for pickling a steel strip, in a form of a coil, in a treatment line comprising the steps of:

a) uncoiling the strip by an uncoiling hasp;
b) mechanically descaling the uncoiled strip of step a) by passing the strip through an abrasive blaster;
c) pickling the descaled strip of step b) with a plurality of pickling acids after mechanically descaling the strip;
d) rinsing the pickled strip of step c);
e) clamping the rinsed strip of step d) to a recoiling hasp;
and
f) recoiling the clamped strip of step e);
wherein the strip is pushed through the treatment line at least until a front end of the strip reaches the recoiling hasp and wherein further the strip is drawn through the treatment line by at least the recoiling hasp.

5 more elements

Dependencies are inferred from the claim text.

Process and plant for pickling stainless steel strip

Life of this patent

Process and plant for pickling stainless steel strip

Life of this patent

Abstract

Claims15