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About Sandblasting

 

    Abrasive blasting is commonly referred to as sandblasting, although use of actual sand is not recommended.  There are a variety of problems with using sand, such as:

Needs to be dried before use

Low hardness on Moh's Scale, basically non- recyclable

Contaminated with minerals such as salt, which is adverse to the metal

Dirty and dusty

Contains free silica, a health hazard

Poor use of resources

    Modern blasting shops use a variety of different abrasives depending on the application.  Most of these are made from recycled materials, some are raw materials.  Commonly used abrasives include:

Plastic Media

Coal Slag

Aluminum Oxide

Crushed Glass

Glass Beads

Silica Sand (also contains free silica)

Steel Grit

Baking Soda

Corn Cob

    The Society for Protective Coatings, or SSPC, is an organization that maintains standards for cleanliness of blasted materials.  To learn more about SSPC specifications, click here.  The process for preparing surfaces for paint involves many steps- these are the basics:

Degrease/ De-wax

Pressure Wash

Needle Scale

Grinding

Abrasive Blast

Welding Repairs

Clean Prepared Metal

    We prepare the substrate to near new conditions following SSPC guidelines for commercial blast to white metal blast.  This gives the metal the best profile for primers to etch and adhere to for superior bonding. 

 

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