Perfected procedure for preparation of aluminum surfaces and alloys for their subsequent coating with metals, lacquers and paints. (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for preparation of aluminum surfaces and alloys of the same for its subsequent coating with metals, lacquers and paint. Aluminum objects are treated with an alkaline decapor containing copper salts. The copper content of the decapado bath is 1 to 10 grams per liter and 50 to 400 grams per liter of sodium or potassic hydroxide. Alkaline bathing bathing is added to boric acid. (Machine-translation by Google Translate, not legally binding)