Thermal spray is ideal for reclamation work or to provide a wear, erosion or corrosion resistant coating.
HP / HVOF
Mackay’s have the following HVOF equipment, housed in 4 fully robotic spray cells:
- 1 off Praxair JP 8000 spray system
- 2 off Praxair JP 5000 spray systems
- 1 off Praxair ST 4000 spray system
- 1 off Sulzer Metco DJ 2700 hybrid
- 1 off DJ 2700 internal attachment
THE PRAXAIR JP 5000:
The JP 5000 has been developed and refined to produce the absolute best possible coating quality.
High particle velocity was the primary design objective of the JP 5000, the basic rules for coating quality are:
- High combustion pressure
- High gas velocity
- High particle velocity
A key benefit of the high particle velocities generated by the JP 5000 is the extremely high density and low oxide content of the coating, this is beneficial in corrosion and wear applications.
THE ADVANTAGES OF THE JP 5000’S COATINGS:
High density (low porosity)
Better wear resistance
Higher bond strength
Improved corrosion resistance
Smoother as sprayed coatings
Mackay’s have a fully robotic plasma pray cell utilizing the Praxair SG 100 spray system, this torch has an extension which makes it possible to spray in a bore up to 700mm deep.
It is possible to spray the widest range of materials by means of plasma, these include:
- Metal alloys
- Pure metals
But is most commonly used for ceramics, due to its high temperature source.
Typical plasma spray applications include:
- Wire Drawing Tyres
- Mechanical Seal Faces
- Seal Landings
- Pump Sleeves
- Printing Cylinders
- Temperature Probes
- Pistons (increasing life and efficiency)
Rokide®, Electric Arc, Flame & Fuse Spray
Flame spray is used most commonly for the Repair and reconditioning of worn or damaged components.
Fuse spray is a process by which you apply a nickel or cobalt alloy to a prepared surface and then heat to approximately 900 degrees C. This fuses the overlay material to the substrate forming a homogenous bond which cannot delaminate.
Most commonly used on:
- Pump Sleeve’s
- Wear Faces
- Guide Rollers