Process for scaling on alloy steel surface

Application Number: 00102939
Application Date: 2000.03.16
Publication Number: 1267750
Publication Date: 2000.09.27
Priority Information:
International: C25F1/06
Applicant(s) Name: Dalian Iron & Steel Group Corp. Ltd.
Inventor(s) Name: Wu Huiran;Xia Xueliang
Patent Agency Code: 11207
Patent Agent: cheng guanghu
Abstract The present invention belongs to the solution pickling of metal material and is used to scale the surface of alloy steel. The method of the present invention includes anode electrolytic pickling process, cathode electrolytic pickling process and alternate anode/cathode electrolytic pickling process. The electrolysis parameters include current density 80-300 A/sq dm, electrolytic temperature 20-50 deg.c and electrolysis period 1-5 min. The electrolyte consists of water solution of sulfuric acid and surfactant, which consists of sodium dodecyl bensosulfonate, alkylphenol ethoxylates and water. The present invention has obvious alloy steel scaling effect and no environmental pollution.