pH/5.8 to 5.9 Ammonium Chloride/2 oz/gal 2. Silver plate 1 hour to 1.25 hours at 5 amp.sq ft in a solution containing Silver Metal/1.5 oz/gal Free Sodium Cyanide*/5.0 oz/gal *Highly poisonous. Boric Acid/4 oz/gal Cyanide*/8.0 oz/gal Nickel (as Metal)/3 oz/gal Silver Metal/0.4 oz/gal *Highly poisonous.
配制方法:
Add carbon disulfide brightener, 2 oz/qt of silver strike solution, as required. 3. Immerse in silver-recovery concentration rinse. 4. Rinse in cold water. 5. Oxidize in a solution containing one-eighth oz/gal of sodium polysulfide, operated at 180 to 190'F. 6. Rinse in cold water. 7. Rinse in hot water and dry. If a plain silver finish is desired, the process is terminated at step 4. The oxidizing process, steps 5 to 7, can be applied, following the cycle for copper-plating. Bronze parts are silver-plated by the same process as that described for steel parts.