配方类型:

METAL TREATMENTS

配方说明:

Removing Metal Coatings

配方组成:

Sodium Hydroxide/7 oz/gal
Sodium Carbonate/9 oz/gal
Current Density (reverse current)/75 amp/ft^2
To one pint of this solution, add 0.5 fluid ounce of 100 vol.
hydrogen peroxide. Then immerse the article to be stripped. The
container should be placed in a sink as there may be a sudden evolution
of heat with violent gassing. This will increase the stripping action.
This solution can be used for removing light deposits on copper and its
alloys and heavy deposits from high nickel alloys and ferrous metals.
Formula No.19 (Nickel from Magnesium)
Make work anodic in a solution of 15-25% hydrofluoric acid and 2%
sodium nitrate
Formula No.20 (Nickel from Zinc and Aluminum
hydrochloric Acid/5-20%
Temperature/70-140 F
Hydrochloric Acid/1 pt
Water to make/1 gal
Sulfur/2 oz/gal
Hydrochloric Acid/conc.
Phosphoric Acid/3 qt/gal
Triethanolamine/1 qt/gal
Temperature/150-200 F
Anodic at/100 amp/ft^2
Sodium Cyani

配制方法:

Keep the article dry and make contact before entering the bath. Wash well and dry after treatment.
Formula No.21 (Nickel from Zinc-Base Die Castings) Work is made anodic at room temperature and 6 volts in a 50-55'C.
Baume solution of sulfuric acid and water.
Formula No.22 (Nickel and Chromium from Zinc) Sulfuric acid process as for nickel from zinc and aluminum.