Detonation Spray

Oxygen and fuel (acetylene most common) is fed into the barrel along with a charge of powder. A spark is used to ignite the gas mixture and the resulting detonation heats and accelerates the powder to supersonic velocity down the barrel. A pulse of nitrogen is used to purge the barrel after each detonation. This process is repeated many times a second. The high kinetic energy of the hot powder particles on impact with the substrate results in build up of a very dense and strong coating.

Characteristics of Detonation Spray Coating:

Advantages:

• Excellent bond strength
• Very dense coatings
• Porosity less than 1%
• Better coating characteristics of hardness,wear & corrosion resistance
• Versatile process, ensuring wide range of coatings
• Low process temperature enables spraying of precision components
• Higher thickness coatings easily possible
• Process can be easily automated