Title: Pickling solution for copper and copper alloy
Application Number: 86103745 Application Date: 1986.05.26
Publication Number: 1014991 Publication Date: 1987.12.02
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C23G1/10,C23G1/12
Applicant(s) Name: State-operated Jinshan Machinery Factory Address:
Inventor(s) Name:
Attorney & Agent: FAN NANXING FU HUI
Abstract:
     This invention can not only protect environment pollutian, but also obtain bright surface after pickling for 5 minutes at the temp. of 10-40 deg.C, as it is based on the pickling solution of three traditional acids, increases properly its concentration of sulfuric acid, reduces about the half of nitric acid and omits hydrochloric acid, and adds 0.15-0.3% (w) of the organic brightener, 0.001-0.002% (w) of the acid fog inhibition and 2-6% (w) of the area as the obsorbent of yellow smoke. The invention fits for large quantitives of production mechanically without excessive corrosion after pickling for several time: it is especially applied to pickling copper and copper alloy pieces.
Time: 6
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