Sand blasting media refers to the materials used in the process of sandblasting. Sand was once the first material used for sandblasting which is why the term still lives today; however, sand is rarely used in sandblasting or media blasting because of its harmful effects to lungs. Overall, sandblasting is a technique that involves using compressed air or water to blast abrasive materials onto a surface, which helps to remove unwanted coatings, rust, and other contaminants.
The choice of sand blasting media depends on the type of surface being treated and the desired finish.
Silica Sand
Silica sand is still used today as a sand blasting media due to its availability and low cost. It is suitable for use on metal surfaces and can be recycled multiple times.
Glass Beads
Glass beads are made from recycled glass and are a popular choice for cleaning delicate surfaces such as aluminum or fiberglass. They are also used in peening applications, where they help to strengthen metal surfaces.
Aluminum Oxide
Aluminum oxide is a synthetic material that is often used when a more aggressive surface treatment is required. It is commonly used on steel surfaces and can also be recycled multiple times.
Walnut Shells
Walnut shells are a natural alternative to synthetic materials like aluminum oxide or silica sand. They are biodegradable and suitable for use on softer surfaces such as wood or plastic.
Plastic
Plastic blast media is one of the largest growing media materials used in the world today because it is reusable and holds up well in many cycles. It can also be recycled. Many military maintenance, repair, and overhaul (MRO) teams used plastic to clean aircraft parts such as wheels, engines, and other parts where coatings or paint need to be removed.
Choosing the right sand blasting media is crucial for achieving the desired results in any sandblasting project. The type of material chosen will depend on factors such as the type of surface being treated, the level of aggressiveness that is required, and environmental considerations such as recyclability or biodegradability.