Product Categories / Metal Treatment / Aluminum Treatment
Duraseal 450 /450A
Product description
Duraseal 450 and Duraseal 450A are dual special
products for the cold saturation sealing of anodized
aluminum surfaces.
Features
- Duraseal 450/450A reduce the treatment time and
saves energy. - Duraseal 450/450A prevents the discoloration of color
after anodizing and eliminates greenish bloom of
anodized surface. - Duraseal 450/450A since it has concentrate
consistent; it is suitable for light to dark color
saturation.
Application
- Duraseal 450/450A products are specially formulated
products for the cold impregnation of anodized aluminum
surfaces at low temperature. Compared to hot water sealing, the cold process reduces the cost of heating and
improves color shades.
Physical & chemical Properties
- Duraseal 450
Appearance Liquid.
Color Clear pale Reddish
PH (1%) at 25oC 5.8 ± 0.3
Sp gr at 25oC 1.16 ± 0.04
Miscibility in water Miscible - Duraseal 450 A
Appearance Liquid.
Color Colorless
PH at 25oC 5.8± 0.3
Sp gr at 25oC 1.2 ± 0.05
Miscibility in water Miscible
Equipments
Duraseal 450/450A tanks should be made of stainless steel or mild steel lined with rubber, PP, PVC, or other fluoride resistant material.
Process Sequences
- Cleaning and degreasing.
- Rinsing
- Etching with Caustic Soda.
- Rinsing
- Desmutting
- Rinsing
- Anodizing
- Rinsing
- Coloring.
- Rinsing.
- Sealing with Duraseal 460/460A
- Rinsing with DI water
Operating Parameters
Duraseal 450 Conc. 8 -12 lit/ 1000 lit
Duraseal450A Conc. 3 – 4 lit/ 1000 lit
Temperature 28 – 30 oC
25 – 35 oC preferably
Time: 0.8 – 1.20 min/μm
pH 6.0 ± 0.5 *
Initial Preparation
- Add 8 to 12 lit of Duraseal 450 per 1000 lit of
operating volume. - Add 3 to 4 lit of Duraseal 450A per 1000 lit of
operating volume.
Precautions
- Prior and after the impregnation process DI
water is used. Short rinse with 60 – 80oC hot
water rinsing tank enables fast drying of the
parts.
