METHOD FOR ELECTROLYTICALLY DESCALING COLD ROLLED STAINLESS STEEL STRIP WITH NEUTRAL SALT

摘要

PURPOSE:To increase the efficiency of descaling by indirect electrolysis in an aq. neutral salt soln. by adding a prescribed amt. of trivalent Fe ions to the neutral salt soln. CONSTITUTION:An aq. neutral salt soln. 4 contg. =10g/l trivalent Fe ions is prepd. Anodes 1 and cathodes 2 are arranged on both sides of a cold rolled stainless steel strip 3 immersed in the neutral salt soln. 4 and DC voltage is impressed. Indirect electrolysis by which anode and cathode reactions take place successively is then carried out. The descaling ability of the neutral salt soln. having deteriorated descaling property is restored and the efficiency of descaling is increased.