EP 0923420 A1 19990623 - BRUSHING PROCESS FOR CORROSION AND OXIDATION RESISTANCE
Title (en)
BRUSHING PROCESS FOR CORROSION AND OXIDATION RESISTANCE
Title (de)
BÜRSTVERFAHREN ZUR VERBESSERUNG DES KORROSIONS- UND OXYDATIONSWIDERSTANDES
Title (fr)
PROCEDE DE BROSSAGE AMELIORANT LA RESISTANCE A LA CORROSION ET A L'OXYDATION
Publication
Application
Priority
- US 3450196 P 19961226
- US 90069797 A 19970725
- US 9724048 W 19971229
Abstract (en)
Treatment of cold-rolled stainless steel to remove oxidation residue without pickling, involves firstly annealing the steel, wet brushing with an abrasive brush which removes the oxidative residue and polishes the steel to a desired finish having surface roughness (Ra) of 3-38, then passivating. The steel can be slit to the required width and sheared to length, with all treatment steps performed in a continuous operational line, the brushing step performed at a relative surface speed, of roller brush to steel, of between 1400-4000 ft/min and at a pressure of 0.25-2.5 hp/inch. A method of increasing the productivity of a continuous cold-rolled stainless steel finishing line using a method similar to that above is also claimed, together with a manufacturing line for treating cold rolled stainless steel strip without pickling using the methods claimed above.
IPC 1-7
IPC 8 full level
B24B 27/033 (2006.01); B24D 13/10 (2006.01); C21D 8/02 (2006.01); B21B 3/02 (2006.01); B21B 45/04 (2006.01)
CPC (source: EP)
B24B 27/033 (2013.01); B24D 13/10 (2013.01); C21D 8/0205 (2013.01); C21D 8/0242 (2013.01); B21B 3/02 (2013.01); B21B 45/04 (2013.01); Y02P 10/20 (2015.11)
Designated contracting state (EPC)
BE DE DK ES FR GB IT NL SE
DOCDB simple family (publication)
WO 9829205 A1 19980709; AU 5904098 A 19980731; EP 0923420 A1 19990623; EP 0923420 A4 19990623
DOCDB simple family (application)
US 9724048 W 19971229; AU 5904098 A 19971229; EP 97954639 A 19971229