What’s the Difference Between a Blast Machine and a Shot Peening System?
The professionals at Kramer Industries are experts in nearly every variation of surface finishing. Although we are well-versed in our machines’ many uses, we understand that the technical jargon can get a bit confusing to newcomers in the field. One common question we hear is, “What is the difference between a blast machine and shot peening system?” Well, we’re glad you asked. In this blog post, we will break down the differences between a blast machine vs. a shot peening system, and steer you on the path toward a successful surface finish.
What is blasting?
Before moving onto further production like painting, a metal surface needs to be clean and smooth. Abrasive blasting cleans off contaminants, removes coatings, or deburrs the surface. The process takes compressed air and shoots an abrasive media like Aluminum Oxide Grit or Glass Beads. The media cleans the metal surface, leaving it ready for further processing.
What is shot peening?
Shot peening is typically done with Steel Shot or Steel Grit. The most effective methods use wheel blasting systems that essentially throw the media at the part. This type of media uses this process due to its high weight/density. Shot peening both cleans and strengthens (or work hardens) the surface of a material by applying stress to its surface. During the production process, residual stress can develop, placing higher levels of stress on certain areas of the part. Shot peening remedies this problem.
Pros and Cons
Abrasive blasting is ideal for situations where a coating needs to be stripped, machining marks need to be removed, or a specific surface finish is needed. This type of blasting works well for large and small parts in blast cabinets and with portable blasting systems.
Shot peening works best with heavy parts or large batches of parts such as brake calipers or similar. This process works well to clean the parts, remove scale, and provide a work hardened surface. Shot peening is typically not used with more delicate or smaller parts.
If you need further help with your surface finishing project, reach out to the experts at Kramer Industries. We have over 100 years of finishing expertise under our belts and are happy to help our clients achieve the precise finish they are looking to for.