| 配方类型： |
METALS AND THEIR TREATMENT |
| 配方说明： |
Alkaline Cleaners
Soak or electrolytic |
| 配方组成： |
Sodium hydroxide/2 oz/gal*
Operating Conditions: Bath temperature 180-212'F Immersion time
3-10 min. Clean until no water break occurs in rinse.
Comments** For average type soil removal and prior to chemical
treatment and electroplating. In electrolytic cleaning, parts are
cathodic; current density 10-50 amp/ft^2 and 6 volts dc. Use steel
tanks, maintain pH above 11.0.
**Anodic cleaning not recommended; undesirable oxide and hydroxide
surface films will form, and surface pitting may occur from prolonged
cleaning.
*Cleaners containing more than 2% sodium hydroxide (NaOH) will attack
ZK60A, ZK60B and some magnesium-lithium alloys with a resultant decrease
in dimensions.
Formula No.
Sodium carbonate/3 oz/gal*
Sodium hydroxide/2 oz/gal*
Wetting agent/0.1 oz/gal*
Wetting agent/0.1 oz/gal*
Sdoium carbonate/3 oz/gal*
Trisodium phosphate/4 oz/gal*
Sodium Carbonate/4 oz/gal*
Wetting agent/0.1 oz/gal* |
| 配制方法： |
Operating Conditions: Bath temperature 180-212'F Immersion time 3-10 min. Clean until no water break occurs in rinse.
Comments** For average type soil removal and prior to chemical treatment and electroplating. In electrolytic cleaning, parts are cathodic; current density 10-50 amp/ft^2 and 6 volts dc. Use steel tanks, maintain pH above 11.0.
**Anodic cleaning not recommended; undesirable oxide and hydroxide surface films will form, and surface pitting may occur from prolonged cleaning.
*Cleaners containing more than 2% sodium hydroxide (NaOH) will attack ZK60A, ZK60B and some magnesium-lithium alloys with a resultant decrease in dimensions. |
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