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| 配方类型： |
METAL TREATMENTS |
| 配方说明： |
Coloring Brass |
| 配方组成： |
Temperature/160'F
The copper carbonate and the ammonia are thoroughly mixed before
adding the water. An excess of copper must be present. The color, which
is a blue black, may be fixed by a subsequent dip in a 2.5% solution of
caustic soda.
Formula No.9 (Gray Black on Brass
Water/1 gal
Barium Sulfide/0.5 oz
Ammonium Carbonate/0.25 oz
Water/1 gal
The color is made more clear by wet scratch brushing and repeating
the dipping.
Copper Carbonate/1 lb
Ammonia/1 qt
Water/2.5 qt
Temperature/175'F
Hydrochloric Acid/1 gal
White Arsenic/2 lb
Antimony Trichloride/1.25 lb
Sodium Thiosulfate/8 oz
Ferric Nitrate/1 oz
Sodium Thiosulfate/6 oz
Temperature/180'F
Water/1 gal
Temperature/160'F
Potasium Chlorate/5.50 oz
Acetic Acid/4 oz
Nickel Sulfate/2.75 oz
Copper Sulfate/24 oz
Water/1 gal
Temperature/195-212'F
Nickel Ammonium Sulfate/8 oz
Lead Acetate/2-4 oz
Potass |
| 配制方法： |
This solution is used hot and no water should be added. |
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