| We now have a whole
range of phosphate coatings that fulfill the needs of corrosion
resistance and may be used as a base for topcoats.
Phosphate: a Grey to dark Grey crystalline finish depending on
the base steel. The deposit is in the range of 1,000 to 3,000
mg/sq. ft. The surface contains capillaries and micro-cavities
which absorb oils to give corrosion protection in the order of
72 to 120 hours to red rust depending on the oil used.
In the dry
state the finish provides an excellent base for paints and other
topcoats of excellent adhesion to give extended corrosion
protection and a variety of colors.
phosphate retains a non-alkaline condition so preventing alkali
degradation of the paint film, and prevents reaction between the
oils in the paint film and the metal surface. The initiation and
spread of corrosion is retarded.
Phosphate: a thick, large crystalline finish dark Grey deposit
in the range 1,000 to 3,000 mg/sq. ft which is generally oiled
to give some corrosion protection.
The finish is
mainly used for engineering components that require break-in or
wear-in in components such as gears, steering parts, axle
pinions, Conrad bolts and rocker arms.
Torcad's capacity is 9,000 tons per annum to
following automotive specifications include:
Modified Zinc Phosphate: a fine light Grey crystalline deposit
that is used as an undercoat for topcoats and rubber bonding.
The range of deposit is 100 - 450 mg/sq. ft. For rubber bonding
the finish is supplied without an oil topcoat. The
specifications are customer driven.
oils, lubricants and topcoats are supplied over phosphate bases
including waxes, Dorrlseal 400, BPL-211, Novalube 305, Texo 330,
Torque Tension Coatings, and fluorocarbons.
Torcad can also supply
colored topcoats in green, red, black and blue.