Title: Process for removing oxide layer and scale from metals and metal alloys, in particular alloyed steels, high-alloyed steels and carbon steels in pickling bath with Fe (III) ions as active component
Application Number: 88104461 Application Date: 1988.07.22
Publication Number: 1039850 Publication Date: 1990.02.21
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C23G1/02,C23G1/08
Applicant(s) Name: Borsodi Vegyi Kombinat Address:
Inventor(s) Name: Bordas Zolitan, Mihalezku Josef
Attorney & Agent: QUAN JING
Abstract:
     A new clearing method of oxide and iron scale on surface of metal and alloy is published in the invention. For this method, the product is treated in the solution of chlorinated ferric sulfate (III) with 15-200 g/l ferric ion or ferric chloride (III) or ferric sulfate (III). Above mentioned solution is acid free or 2-30% (weight) inorganic acid.
Time: 4