Shot blasting is a method used to clean, polish and strengthen metals. It is used in almost every industry that uses metals, including construction, automotive, ship building and rail industries. There are two technologies used in shot blasting, including air blasting and wheel blasting. Shot blasting works by using a high performance and airless centrifugal wheel that propels blast media at a high speed in a highly controlled pattern.
Shot blasting leaves metallic surfaces ready for application of overlays or coatings, thereby eliminating costly drying time and disposal procedures that are normally associated with other surface preparation processes. It produces the highest bonding character of any other known surface preparation method. The wheel blasting method involves the conversion of electric motor energy into kinetic abrasive energy through the rotation of a turbine wheel. Air blasting involves compressing air into the component by projected nozzles. In certain applications, wet blasting may work best; this method involves using a media-water mix.