Temperature/70-75'F Treatment time/15-30 minutes Solution/16% Sulfuric Acid The Aluminum part is made the anode (positive terminal) while a D.C. voltage of from 12 to 15 is applied. the solution must be cooled to maintain the temperature within the required limits. This treatment will provide a hard, corrosion resistant coating on the aluminum surfaced. Formula No. Solution/6% Chromic Acid Temperature/95-110'F Treatment time/30-60 minutes Voltage/40 D.C.
配制方法:
This treatment is recommended where there is possibility of electrolyte entrapment which might result in corrosion of the aluminum part at some later date.