Industrial wear applications create exacting conditions for equipment and components due to the inherent abrasiveness, corrosiveness, or thermal damages associated with these specific processes. Sandblasting, for example, is a surface preparation method that blows abrasive grit through shot blast nozzles at high velocities to change the surface composition of an object. This grit, comprised of tough substances such as sand or chill-cast iron, has the capacity to erode the interior components of the abrasive blaster – particularly at the outlet. Shot blast nozzles and their liners must therefore be composed of high strength materials capable of withstanding long-term abrasive conditions from high concentrations of small particle erosive elements.
Materials for Shot Blast Nozzles
Conventional shot blast nozzles have been manufactured using high strength metal compounds such as tungsten carbide (WC), an exceptionally hard industrial metal with double the strength and density of steel. However, tungsten carbide owes these properties to pliable cobalt molecules cementing the tough carbide grains together. These comparably soft particles can exhibit wear over time due to continuous corrosion from low angle impacts of various particles used in hot blasting, such as alumina. Continuous exposure to such high-velocity media will exhibit significant wear on shot blast nozzles made of traditional materials.
Sialons are uniquely capable of withstanding such long-term conditions, with excellent wear-resistant properties and long service life capabilities. Shot blast nozzles have been formulated from high toughness Syalon 050, a mixed alpha-beta ceramic material with a hardness value of 94 HRA and a porosity value of 0%. These components are capable of vastly outperforming conventional materials, with proven operation capacities of over 1000 hours under operating conditions with chill-cast iron grit at 100psi.
Sialons for Industrial Wear Applications
The revolutionary mechanical properties of sialons have encouraged manufacturers to implement sialon ceramic products for a broad range of wear applications, including: sand blast nozzles; grinding media for sample preparation; dewatering foils for paper manufacturing; extrusion dies for aluminum processing; and more.
Sialon Shot Blast Nozzles from International Syalons
International Syalons is the UK’s leading manufacturer of sialon ceramics and related products for an enormous range of applications. We are dedicated to improving the applicable properties of these high strength and good versatility products by maintaining a consistently improving range of sialon materials, including:
- Syalon 101: broad strengths and resistances, for use in wear industries as protection sheaths and milling media;
- Syalon 050: extreme strength and resistant properties, is commonly used to manufacture sand blast nozzles;
- Syalon 110: outstanding thermal shock resistances;
- Syalon 201: great strength retention;
- Syalon 501: electrically conductive.