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Industrial valves coated with spray polyurethane

Dart valve 1


Dart valve 2


Dart valve 3


Dart valve 4


Spray polyurethane.

Dart valves coated with  4mm thick spray applied polyester polyurethane.

The mild steel  dart valve is grit blasted and a bonding is applied prior to coating.

The mild steel dart valve is mounted on a manipulator to aid coating.

The valve is coated to a thickness of 4 mm with tough spray applied polyurethane.

Polyurethane masks for turbine blades.

Polyurethane masks

Polyurethane masks

Polyurethane masks

Polyurethane masks

Polyurethane masks

Polyurethane masks

Polyurethane masks

Polyurethane masks

Polyurethane masks.

Compressor blades and turbine blades are routinely shot peened to impart strength.

The shape of the root and aerofoil differ from blade to blade creating a requirement for custom moulded protection masks.

Polyurethane masks can be moulded in various colours for easy identification.

This slide highlights the moulded process. The blade root securely held by the polyurethane mask.

Walther Trowal reline in Polyurethane





This post describes the relining of a Walther Trowel mass finishing vibratory bowl in polyurethane. The old worn out lining is removed and the steel shell is heat treated and then grit blasted back to the original steel. A new steel mould tool is fabricated by our team of specialist fabricaters. The tool is designed to mould a 25 mm thick lining A moulded lining ensures correct fitting of doors, drains, and dam flaps. This is not possible to achieve with rubber or spray poly linings .A moulded lining  will outperform spray poly or rubber linings. A reline typical takes 7 working days.



Rosler Reline in polyurethane



A Rosler barrel arrives for a new polyurethane liner. The fabrication weighs 3.7 ton.

The customer required the machine back within 1 working week. The old rubber lining is worn out and detached from the work tub. The old rubber lining is removed

and the steel fabrication is grit blasted. Both internally and externally to ensure good adhesion for both polyurethane and paint. A new mould tool is manufactured to suit the internal dimensions of the vibratory trough. This work is carried out in house by our own team of specialist fabricators. The mould is lowered into the fabrication and positioned centrally. A nominal 35 mm gap is created between the work tub and the 

mould, and the unit is ready to be filled with polyurethane. Polyurethane is dispensed via our special machine and decanted into pails prior to pouring the new lining.275 kg of polyurethane was required to reline this machine. The lining is cured in an oven at 80 deg c for 16 hours.The mould is removed and the outside of the tub is painted.The works were completed in 5 working days.