Title: Rust removal and passivation technology of iron and steel
Application Number: 88109074 Application Date: 1988.09.22
Publication Number: 1041402 Publication Date: 1990.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C23C22/62,C23G1/04,C23G1/08
Applicant(s) Name: Feng Deping Address:
Inventor(s) Name:
Attorney & Agent:
Abstract:
     This invention relates to a technological process to remove rust and oxide skin or surface of iron and steel or to resist rust. It is suitable for the preprocessing of iron and steel before plating and coating. It technically features the uses of the oil-rust removing liquor containing sodium alkylbenzene-sulfonate, peregal 0 and LK-44 and the passivant containing calcined lime and sodium-meta-nitrobenzene-sulfonate.
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