Industrial Shot Peening and Deburring Services

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Industrial Shot Peening and Deburring Services

What is Shot Peening?

Shot PeeningShot peening is a cold-working procedure used primarily to increase the 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 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.

Shot Peening Control

DeburringThe 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.

Shot Peening Analysis

What is it?
Shot peening consists of bombarding a metal surface with glass beads or other media such as ceramic beads, aluminum beads and cut wire..

What Does Shot Peening Do?
Peening causes the material in the surface zone to yeld. It literally shakes the metal grains into a more relaxed state. Thus, a thin layer of the surface is placed in uniform compression. This compressively-stressed "skin" counteracts tensile stresses within and effectively blocks cracks.

Why Is Shot Peening Needed?
Machining and forming metal parts create stress concentrations internally. Burrs, scratches, welds, etc. may cause additional defects.

These problems may be responsible for premature fatigue failure, pososity, loss of strength and corrosion....unless something is done.

Since fatigue cracks generally begin at surface imperfections... a compressively-stressed, shot peened skin is highly effective in preventing crack formation and growth.

Blast Finishing and Shot Peening are the state-of-the art technology to deburr, clean and enhance the appearance, and improve the fatigue life of parts, such as gears, housings, shafts etc. After being shot peened, the parts have a higher magnitude of compressive stress which means longer life under its specific function that our customers design.

ENGINEERED ABRASIVES can analyze a particular part and enhance the appearance and fatigue life of the part through the Blast Finishing and Shot Peening process available through our Shot Peening Job Services Program. Call us to analyze your particular parts.

ENGINEERED ABRASIVES is committed to the highest standards in the industry, such as the SAE International standards. We also have patents and are certified for ISO/TS 16949 and ISO 14001 Registered (We are also Ford Q1 approved).

Contact Us Today About Our Superior Industrial Shot Peening Abrasives Blasting Services