Case Study: Corroglass 600 for fan unit

Corrosion protection for fan unit.

Customer

General industry

Application Date

2003.

Scope Of Work

Protection of new impeller and casing, designed for use
in aggressive conditions.

Products

Internals: Corroglass 600 Series.
Externals: Plasmet ZF.

Substrate

Carbon steel.

Coating system

• Internal: The impeller was grit blasted to ISO 8501-1,
SA 21/2 and treated using Corroglass 600 Seriesmaterials.
• The casing was grit blasted internally to the same
standard, followed by application of Corroglass 600
Series to a minimum dry film thickness of 1mm,
carried into the flange rebates and finished flat to
ensure optimum performance in use
• External: The area was grit blasted to SA 2 and
protected using two coats of Plasmet ZF.

Coating credentials

This particular unit was developed for use at a duty
incorporating 1% hydrochloric acid, 500ppm
monochlorobenzene and moist air at 30ºC, operating
at a maximum of 1339rpm and requiring additional
protection against corrosion attack.
Using Corrocoat’s engineering facilities the impeller was
fully balanced to BS6861-pt1.

Photographs

Left: Impeller in coating shop after grit blasting and
primer coat.
Middle: The fully completed and inspected impellers.
Right: Casing completed, awaiting dispatch.