AOTC UPGRADED HVOF FACILITY EXCLUSIVE IN OMAN
AOTC has recently acquired remarkable industrial tools in the frame of the Robotic arm and a thermal spray cabin.
The thermal spray cabin is equipped with a seven axis robot arm mounted with HVOF (High Velocity Oxy Fuel) gun using ethanol as fuel.
This equipment will significantly enlarge the capabilities of AOTC to deposit functional coatings on 3D parts.
Thermal spraying of surface coatings relies on manual spraying and or automatic control robotic systems.
The manual spraying approach has significant health and safety risks and quality may not be as high as an automatic control robotic system. An automatic robotic system however requires considerable preplanning and prior knowledge of the product being coated.
The thermal spraying surface coating specification details the thermal spraying requirements and therefore a particular project. This specification will be provided to a human operator to conduct the thermal spraying or will be used to pre-program a robotic system.
In an automatic system (pre programmed) the process specification is used to develop the robot manipulators task and trajectory planning. This is the movement of the torch tip in 3D space over specified periods of time thus conducting the appropriate thermal spraying.
Maximizing speed to carry out appropriate spray levels are needed; however the robot manipulator must be able to produce the necessary velocities and accelerations to comply with efficient spray speeds.
The depth of coating can be very important and thermal spraying can provide relatively thick coating at high deposition rates. The coating process is therefore quite efficient. Because the coating is mechanically bonded to the substrate, excellent adhesion is achieved between the coating material and the substrate.
In many cases components thermally sprayed with appropriate coatings can have superior qualities over new components such as extended lifespan.
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