Engineered Abrasives is committed to the highest standards and quality in our shot bead peening industry, such as the SAE and International Standards, we also have many patents and are ISO/TS16949 and ISO 14001 registered, we are also FORD Q1 approved.

• Shot Peening Equipment
• Patented Fine Steel Peening Process
• How Shot Peening Works
• Precision Ceramic Metal Glass Aluminum Bead Shot Peening Process

The World of Shot Bead Peening

• Special Shot Peening machines solve the problem of gear tooth pitting.
• All direct shot peening and pressure blasting machines are manufactured by Engineered Abrasives and are the most advanced state-of-the-art equipment of its kind on the world market today.
• Shot Peening Machines and processes are patented.
• High pressure spray wash, ultrasonic wash/rinse and dry systems are used to assure your parts are cleaned before they are sent back to you.

Patented Fine Steel Peening Process

What is Shot Peening?

Shot Peening is a cold-working procedure used primarily to increase fatigue life and prevent stress, corrosion, and cracking of metal parts. 

In Shot Peening, the surface of the finished part is bombarded with round steel shot (or glass, ceramic, aluminum bead shot) in custom built machines under fully-controlled conditions. Every piece of shot acts as a minute peening hammer. When the surface has been peened by the abundance of impacts, the resulting compressed surface layer is highly resistant to the formation of stress cracks. 

It is well known that a crack will not expand into a compressed layer. Nearly all fatigue and stress corrosion failures originate at the surface of a part, the layer of compressive stress induced by Shot Peening produces a significant increase in the useful life of the part. The maximum compressive residual stress produced at or near the surface is at least as great as half the ultimate tensile strength of the material. 

Shot Peening is used to eliminate failures of present designs, or to allow the use of higher stress levels, which, in turn, permit weight reduction for new designs. 

Precision Shot Peening Control

The primary object of controlled Shot Peening is to generate a compressively stressed surface layer in which the amount of stress, the uniformity of the stress, and the depth of  the layer can be controlled from piece to piece. As it is practically impossible to inspect the stress distribution on a qualified part, the full control of all aspects of the process becomes imperative. The basic variables of stress, depth, and coverage are accomplished in practice by the use of the right mixture of shot, exposure time, choice of air pressure or wheel speed, nozzle size, distance of nozzle from part, and angle between shot stream and peened surface. It is extremely important that the relative motion between shot stream and part be controlled for uniformity and reproducibility. Our fully automated process accomplishes that control.

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