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| 配方类型： |
METAL TREATMENTS |
| 配方说明： |
Coloring Metals Iron and Steel |
| 配方组成： |
Water/1 gal
Sodium Nitrate/1.5 oz
Formula No.4
Clean and immerse in 10% oxalic acid solution. Rinse and dry. Wipe
off smut and dip in 1% sodium sulfide solution.
Formula No.
Sodium Dichromate/1 lb
Potassium Dichromate/1 lb
Temperature/750-850 F
Sulfuric Acid/180
Sodium Dichromate/1.5 oz
Water/200
Potassium Dichromate/50
Temperature/210 F
Caustic Soda/8 lb
Caustic Soda/80 oz/gal
Potassium Nitrite/30 oz/gal
Potassium Nitrate/20 oz/gal |
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