Method of and process for cold-rolling of stainless-steel and titanium-alloy strip
AssigneeBWG Bergwerk-Und Walzwerk-Machinenbau GmbH
InventorsRolf Noe, Andreas Noe, Dieter Baukloh
Life of this patent
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Abstract
A method and process line for producing cold-rolled stainless-steel or titanium-alloy strip from hot-rolled strip descales the hot-rolled strip by shot-blasting and/or brush-polishing and then cold-rolls the descaled strip. The cold-rolled strip, at its final thickness, is annealed and then pickled, all in a single continuous line.
Claims15
A method of producing cold-rolled stainless-steel or titanium-alloy strip from hot-rolled stainless-steel or titanium-alloy strip, said method comprising the steps of, in a single continuous line and in succession in said line:
- (a) descaling a hot-rolled stainless-steel or titanium-alloy strip while displacing said strip along said single continuous line by at least one of the steps of:
- (a1) shot blasting the hot-rolled stainless-steel or titanium-alloy strip, and
- (a2) brush polishing the hot-rolled stainless- steel or titanium-alloy strip, to produce a descaled hot-rolled stainless-steel or titanium-alloy strip;
- (b) thereafter cold rolling the descaled hot-rolled stainless-steel or titanium-alloy strip to a final strip thickness while displacing said strip along said single continuous line to produce a cold-rolled descaled stainless-steel or titanium-alloy product;
- (c) subsequently annealing said cold-rolled descaled stainless-steel or titanium-alloy product while displacing said strip along said single continuous line to produce an annealed strip;
- and
- (d) thereafter pickling the annealed strip while displacing same along said single continuous line, thereby forming the cold-rolled stainless-steel or titanium-alloy strip.
A processing line for producing cold-rolled stainless-steel or titanium-alloy strip from hot-rolled stainless-steel or titanium-alloy strip, said processing line comprising:
- at least one descaler for descaling the hot-rolled stainless-steel or titanium-alloy strip to produce a descaled hot-rolled stainless-steel or titanium-alloy strip and including at least one descaling unit selected from a shot blaster and a brush polisher;
- at last one cold-rolling mill connected in a single continuous line with said descaler for cold-rolling the descaled hot-rolled stainless-steel or titanium-alloy strip to produce a cold-rolled descaled stainless-steel or titanium-alloy product;
- at least one annealing oven connected in said continuous line with said mill for annealing the cold-rolled descaled stainless-steel or titanium-alloy product to produce an annealed strip;
- and
- means forming at least one pickling bath connected to said oven in said continuous line to pickle the annealed strip.
Dependencies are inferred from the claim text.