There are innumerable contexts in which the process of improving metal strength is useful. Some of those contexts are architecture and construction, aircraft repairs, automotive spring manufacturing, surface finishing and other manufacturing contexts. Read More…
Leading Manufacturers
Midwest Finishing Systems, Inc.
Hartland, WI | 800-854-0030Our sandblast equipment is designed to handle a wide variety of applications and we use manufacturing methods that guarantee these machines will stand the test of time.

Great Lakes Finishing Equipment
South Elgin, IL | 708-345-5300We have decades of experience in the finishing industry and we specialize in aqueous washing, abrasive blasting, vibratory finishing, polishing and buffing.

Innovative Peening Systems, Inc.
Norcross, GA | 770-246-9883Innovative Peening Systems provides shot peening and abrasive blasting equipment manufacture. We offer custom blasting machines, designed to your specifications. Innovative Peening Systems also can rebuild industrial machinery and offer total automation.

Unified Technologies
Painesville, OH | 440-897-5226Unified Technologies is proud to offer a full range of top-quality continuous-duty automatic shot blast systems. Including Spinner Hanger, Tumble Blast, Pass Through, etc. Our shot blast equipment will improve your results, reduce labor costs, and save you money.

Guyson Corporation of USA
Saratoga Springs, NY | 800-228-7894Designers and builders of industrial cabinet-blast machinery, including manual, semi-automatic and fully automated air-blast systems, standard and custom-engineered wet blasting machines, wheel-blast machines, shot peening systems, robotic blast systems and precision surface preparation systems.

Surface Blasting Systems, LLC
Coopersville, MI | 800-727-2442Surface Blasting Systems specializes in designing and building blasting equipment to meet the individual customer's needs. We listen to your exact requirements and determine the best solution, whether suction, pressure or a wheel blaster, and then we make it as durable as possible.

Peening is performed after products have already been manufactured and put to use. Descaling, decoring, sand removal and other structural improvements are often made to gear parts, clutch springs, camshafts, gearwheels, connecting rods, turbine blades and many other kinds of machinery through the process of shot peening.
Other processes that use non-metal peening media like glass or ceramics are still referred to as peening, though their applications are generally limited to softer surfaces that could be damaged by heavy, angular or bead-shaped blast media.
Peening as a metallurgical treatment dates back many years. It was originally performed with a peening hammer, the contact surface of which was usually curved. High-impact peening shot provides for the same effect but over a much wider area in much less time. Peening works by imparting residual compressive stress in a surface through the repeated collision of the surface and blunt instruments.
This stress translates, in terms of the properties the treated metal assumes after its treatment, into resistance to metal fatigue. Fatigue-resistant metals boast obvious advantages over untreated metal parts in applications where extended performance under demanding conditions is expected of the material. Aside from the potential for changing mechanical and performance properties of metals, shot peening can also be used as a cosmetic surface treatment.
Because the particulate size of steel shot and other metal shot materials is so large, it imparts much more visible impact artifacts than smaller media like silica or crushed walnut shells. Shot peening is often used to treat surfaces where an irregular decorative finish is desired. The way light is reflected by overlapping dimples caused by some varieties of shot peening treatment is one of the desirable features of shot peened surfaces.