Sandblasting is a type of abrasive blasting process that propels materials at a high pressure to smooth out rough surfaces. The term sandblast equipment applies to a number of devices designed to use sand to clean or resurface industrial products and components. Sandblasting has become the blanket term for all media blasting processes, though it technically refers only to media blasting processes that use sandblasters and silica blasting media.
In addition to sand media blasters, equipment like shot blasters, grit blasters, bead blasters, shot peening equipment and soda blasting equipment can use ceramic, metallic, glass or other particles of varying shapes to treat surfaces. Those surface treatment tasks include coating removal, smoothing or roughening, etching, carving, degreasing, deburring, deflashing and descaling. Such treatments are applied to all manner of metal, wood, glass and plastic products, and each different process requires variations in machinery, blasting technique and blasting media. Two sandblaster configurations account for all of the sandblasting processes in existence: compressed air and pressurized water. The surfaces and products that sandblasting equipment treat can be as small as nuts and bolts or as large as ship hulls. To accommodate this range of products, an equally wide range of blasting equipment is necessary. Automated blasting systems and sandblast cabinets allow large scale treatment of small products while portable sand blasters, which can be taken from one work site to another, make single treatments of large surfaces possible.Two main varieties or sandblasters, dry and wet, are widely used in the surface treatment industry. Wet sandblasters blast surfaces with a combination of blasting media and pressurized water. Only a small minority of blasting projects use pressurized water compared to compressed air blasting projects. Pressurized water is used mostly for the treatment of surfaces that need to be cooled during blasting. Dry machines use air compressors to generate a powerful stream that propels abrasives against surfaces. Three dry blasting configurations, gravity-fed, pressure pot and siphon systems, are the most widely used blaster configurations. Each design involves an air compressor, abrasive particle supply and a nozzle to direct the blasting stream. In each of the three configurations, though, the relationship between the components is different. Gravity-fed systems use gravity to direct abrasive into the compressed air stream. These systems work well for small projects, especially in portable blasters. Siphon systems function by passing the compressed air stream next to the unpressurized abrasive store. The change in pressure siphons abrasive into the stream of compressed air. The pressure pot system is identical to the siphon system except that its abrasive store is negatively pressurized to allow for a more efficient combination of air and abrasive.
Sandblast Equipment - A.E. Aubin Company
Sandblast Equipment - A.E. Aubin Company
Media used for blasting, grinding or polishing. Abrasive materials are
either in loose form or formed together into wheels, files or bricks or
adhered to cloth or paper with resin or glue. Natural abrasives include
sand, baking soda, garnet, emery, flint and corundrum. Metallic shot,
grit and plastic material are also used as abrasives in cleanings of castings
and surface preparation.
- Tiny, individual particles of an abrasive mineral used in sandblasting.
- A continually flowing air line respirator fabricated to cover the shoulders, head and neck of the wearer. Its purpose is to protect the worker from recoiling abrasive from the sandblasting equipment.
- Hard mineral formed from the chemical reaction between oxygen and aluminum; the creation of aluminum oxide on the surface of a metal prevents future occurrences of oxidation. After the material has been sandblasted by the sandblasting equipment.
- Procedure involving the use of abrasives such as coated or bonded abrasives to remove burrs, jagged edges or protuberances on the surface of an object created during industrial applications.
- The amount of time that a blasting nozzle of sandblasting equipment remains fixed upon a particular area. Extended dwell times may cause excessive heat generation and damage the product.
- A naturally-occurring abrasive containing aluminum oxide and iron oxide used in light applications rather than industrial processes because of its low hardness.
- The extent to which abrasive grains break or split apart upon impact or under pressure; friable abrasives fracture relatively easily and posses a shorter lifespan.
- A rapid, dust free process that leaves the substrate clean and dry. Shot blast machines hurl shot toward the intended surface at a high speed, removing debris, paint and buildup from the surface.
A procedure used by sandblasting equipment that prepares a part or surface to withstand
stress or fatigue breakdown.
- A pasty liquid mixture containing suspended solids.
- Category of hard mineral abrasives consisting of diamond and CBN; superabrasives maintain tremendous hardness.
- Tough, artificial abrasive used in heavy sandblasting applications involving various forms of steel.