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.

Midvale Industries, Inc.
St. Louis, MO | 800-341-0043Midvale Industries is your one-stop source for all of your part finishing needs. From wheel blast finishing to vibratory deburring, steel abrasives to wheat starch, we stock a full line of what you need to get the job done. Our knowledgeable sales force is ready to assist you with solutions.

Pangborn® Corporation
Fairburn, GA | 800-638-3000Come where shot peening is a scientific process and try Pangborn® Corporation. We offer a variety of sandblast equipment, including blast cabinets, abrasive blasting barrels and tables, descaling machines and shot peening machines. All the sand blasting equipment we sell can be customized.

MMLJ, Inc.
Houston, TX | 800-727-5707MMLJ provides the blast cleaning equipment industry with the most effective and economical products. The Sanstorm Pressure Blast Cleaning Machines are provided by MMLJ along with The Genuine SodaBlaster&trade. Covering the full blast media spectrum for almost all industries, MMLJ provides modern, simple and trouble-free service. Check out our website today

Kleen Blast
Hayward, CA | 800-227-1134Over 40 years Kleen Blast’s been synonymous with quality abrasive blast media, sandblasting equipment, spare parts & service. Let us be your first choice as an all-in-one source with full line specialty abrasives, contractor & industrial abrasive blast equipment, safety products & accessories. Industry’s best delivery of proven, economical, eco-safe solutions plus spent grit disposal & recycling!

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.