When it comes to surface preparation, many people ask about the difference between shot blasting and grit blasting. On the surface, it may seem like there aren’t many differences because both methods fall under abrasive blasting. The main difference is that they use different abrasive media, equipment, and techniques to clean and prepare metal surfaces.
Click here, call 0333 014 0223, or email info@turkington-es.co.uk to speak to our experts at Turkington Engineering and Welding Services for high-quality shot blasting services.
What Is Shot Blasting?
Shot blasting uses small spherical shots such as steel shot, often described as tiny balls, which are propelled at high speed onto the surface. The machine typically uses centrifugal force in a system known as wheel blasting.
Shot blasting is fantastic for improving durability and helping to improve corrosion resistance. Naturally, this means that your equipment, floors, or surfaces that are cleaned stay effective for much longer, saving you money in the long run.
The shot blasting technique is often used for:
- Metal parts
- Structural steel
- Components that need extra strength
Because the shot is rounded, it tends to produce a smooth surface finish while also helping protect the material from cracks and corrosion. For a more in-depth guide to what shot blasting is, see our companion blog on this topic.
What Is Grit Blasting?
In contrast to shot blasting, grit blasting uses angular blasting grit such as:
- Steel grit
- Aluminum oxide
- Silicon carbide
- Crushed glass
Any one of these sharp abrasive particles can cut into the substrate, making it easier to remove impurities, rust, and stubborn old coatings.
It is important to remember that grit blasting can use compressed air, similar to sand blasting, or other equipment, depending on the application. Because grit blasting is a slightly more aggressive cleaning method, it is the perfect solution to tackling heavy surface cleaning and preparing surfaces for coatings or protective treatment.
Are Grit Blasting and Shot Blasting Similar In Any Way?
Yes, shot blasting and grit blasting are similar in that they share the same aim, albeit they achieve their goal using different types of abrasive blasting material.
As with all other blast cleaning methods, both blast and grit blasting are used to remove rust, old paint, old coatings, dirt, and other surface contaminants.
The ultimate goal of each process is to create a clean surface that is ready for painting, powder coating, welding, or other protective coatings.
Key Difference Between Shot Blasting and Grit Blasting
The main difference between shot blasting and grit blasting lies in the media shape and the result it produces.
Shot blasting:
- Rounded steel shot
- Improving strength, durability, and resistance to corrosion
Grit blasting:
- Sharp grit particles that cut into the surface
- Remove contaminants
- Restore the original condition
- Prepare the substrate for finishing
Click here, call 0333 014 0223, or email info@turkington-es.co.uk to ask about blast cleaning methods and find out which is most suitable for your surfaces
