Shot Blast Nozzles

Shot blasting is a method of surface preparation or cleaning. It involves blasting an abrasive grit, such as sand, alumina or chill-cast iron, at high velocities at the surface to be treated through a nozzle which is lined with wear resistant material. Sialon shot blast nozzle liners are extremely effective in this application. Sialons are alloys of silicon nitride and possess excellent wear resistant properties.

The shot blast nozzle liners must be extremely wear resistant. International Syalons manufacture a range shot blast nozzles from Syalon 050, which has a high hardness, fracture toughness and Young's modulus, resulting in excellent wear resistant properties.

Traditionally liners have been made from tungsten carbide. However, at the low angle impacts encountered in many blasting operations, tungsten carbide wears excessively due to the erosion of the relatively soft and ductile colbalt used to cement the carbide grains together.

Syalon 050 has been shown to outperform many competative materials, such as alumina and tungsten carbide. For example, a standard 3/8" nozzle tested using chill-cast iron grit and operating at 100psi performed for more than 1000 hours without appreciable wear.

International Syalons produce a whole range of standard nozzle sizes as well as custom made liners. Please contact us with your requirements. For more information on the wear resistance applications of sialon please download our Industrial Wear Applications PDF.