TH335 Wear-Resistant Coating

TH335 is a cored wire specifically designed for arc spray systems.  It produces a well-bonded wear-resistant coating with high-hardness.  It has the unique ability to produce very rough profile coatings for non-slip applications.  We start with a flat strip of steel and form it into a “U”, the powder is then deposited inside, the steel strip is then folded over after which it is drawn to size. 

TH335, a non-skid arc spray coating, is applied using a twin wire arc spray process sometimes called metalizing.  Two spools of TH335 wire are put on either side of our arc spray machine which then energizes one positive and the other negative, these wires strike an arc when they come within close proximity of each other at the gun head which melts the material.  Dry compressed air is added which both atomizes and propels the material to the substrate.  While the material is molten in the arc zone at the gun head it quickly starts to solidify in flight, the semi-molten particles are propelled at such a rate that they become a splat when they hit the substrate.  

This is not a welding process as the particles adhere through a purely mechanical nature.  It is because of this mechanical bond that a clean contaminate-free surface is available that has 3.5 mils or better profile.  This profile has to be obtained by using sharp angular grit.

This process only requires electricity and compressed air, therefore, the process is relatively inexpensive to operate.  Furthermore, the equipment and material are portable and mobile so it is just as easy to operate whether in the field or in a shop.

Application of TH335 wear-resistant thermal spray coating is considered to be a low skill level process, successful coatings can, and have been, applied with a minimal amount of training.