COMMERCIAL SHOT PEENING SERVICES IN MINNESOTA
HOW OUR MINNEAPOLIS-BASED SHOT PEENING PROCESS WORKS:
During our certified commercial shot peening process, each piece of shot — generally made of glass bead, ceramic bead, steel or stainless steel — that strikes the material acts as a tiny peening hammer, imparting to the surface a small indentation or dimple. To create the dimple, the surface of the material must yield in tension. Below the surface, the material tries to restore its original shape, thereby producing a hemisphere of cold-worked material highly stressed in compression below the dimple.
COMMERCIAL SHOT PEENING SERVICES ARE IDEAL FOR THE FOLLOWING APPLICATIONS:
- Increasing fatigue life for high-stress components, such as automobile and engine parts
- Increasing the lifespan of metal parts through reduction of cracking, stretching, and other stress corrosion
- Restoring parts to adhere to print or engineering specifications
- Reducing tensile stresses
RESULT OF THE SHOT PEENING PROCESS:
Nearly all fatigue and stress corrosion failures originate at the surface of a part, but cracks will not initiate or propagate in a compressively stressed zone. Because the overlapping dimples from controlled shot peening create a uniform layer of compressive stress at metal surfaces, controlled shot peening services provide considerable increases in part life.
In most cases of long-term failure, the common denominator is tensile stress. Tensile stresses attempt to stretch or pull the surface apart and may eventually lead to crack initiation. The shot peening process helps slow crack growth significantly in a compressive layer. Shot peening services offer the most economical and practical method of ensuring surface residual compressive stresses.
THE BENEFITS OF COMMERCIAL SHOT PEENING:
Compressive stresses are beneficial in increasing resistance to:
- Fatigue failures
- Corrosion fatigue
- Stress corrosion cracking
- Hydrogen assisted cracking
- Fretting
- Galling and erosion caused by cavitation
The maximum compressive residual stress produced just below the surface of a part by shot peening is at least as great as one-half the yield strength of the material being shot-peened.
HOW CONTROLLED SHOT PEENING SERVICES ARE DIFFERENT FROM SHOT BLASTING
While shot peening and blasting services both require shooting a stream of material against the surface of a part, they do not yield the same result. While shot peening is a process used to prolong the life of a part, shot blasting is done to clean and smooth a surface for processing.
HOW TO GET STARTED
Ready to get your project moving? Reach out to Eaglemaster to start creating the ideal shot peening process for your components. We have decades of experience and know-how, so we’re confident that we can find a solution to finish your parts to match your requirements. We offer our services to businesses in the Twin Cities and greater Minnesota and Wisconsin area.
Get in touch with us with any questions you may have or to request a quote today. Our certified team of experts is standing by to help you determine the best options for your metal parts and get started on your surface finishing project today.
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