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| 配方类型： |
METALS AND THEIR TREATMENT |
| 配方说明： |
Coloring copper Golden Yellow |
| 配方组成： |
Nitric acid (1.42 sp gr)/2.5 fl oz/gal
Wetting agent such as sodium lauryl sulfate/0.1 oz/gal
Hydrochloric acid (1.20 sp gr)/0.75 fl oz/gal
Temperature/70 to 80'F
Sodium dichromate/20 oz/gal
Immersion time 1 min.
Sulfuric acid (1.84 sp gr)/0.4 fl oz/gal |
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