Glass beads can be recycled up to 30 times. Crushed glass grit made from percent recycled bottle glass is also available. Choose plastic beads for automotive sandblasting. Plastic beads are made out of acrylic, polyester, melamine and urea. They deliver a high stripping rate without damaging or warping the underlying material. Take care with cleanup if you use aluminum oxide, another gentler medium on the sandblasting palette.
It is composed of small grains of aluminum oxide and is very long-lasting. The disadvantage of this medium is that you must carefully dispose of the material after it is used.
Use silicon carbide for toughest jobs. Silicon carbide is the hardest medium available for sandblasting. It allows for shorter blast times and lower cost overall than other media.
It can also power away rust or prepare the surface for painting. Here are 7 tips that can help you choose the best abrasive medium for your specific blasting applications. Sharretts Plating Company now offers abrasive blasting among its metal finishing processes. We are also available to provide reliable media selection advice.
Benefits of Electroplating. Home Blog. It is designed for abrasive pressure blasting of almost any type of substrate: glass, granite, marble, and steel. Due to its ability to deeply etch it is used in the preparation of surfaces prior to painting or coatings.
Plastics : Plastic abrasive is a dry thermoset cleaning media made from crushed urea, polyester or acrylic. Each varying and available in a range of hardness and particle size. Plastic is generally regarded as the best media for mold cleaning, blasting of plastic parts, or in applications where the removal of the substrate material is not permitted. Common industries include automotive, aviation, boating, electronics and industrial applications. Silicon Carbide : Silicon carbide is the hardest abrasive blasting material available, making it the best choice for your most challenging surface finishing applications.
It is available in various colors and purities. Its primary use ranges from bonded abrasive tools, lapping, polishing, glass etching and general purpose heavy duty blast cutting applications. It can be used on a variety of surfaces to effectively remove contaminants, texture a surface for proper adherence of a final coating, or in peening hardening applications.
The correct size, hardness and shape play a significant role in the proper media selection. It is perfect for removing scale and corrosion from steel surfaces while offering a low dust level for improved visibility.
Walnut Shells : Walnut shell abrasive is a hard naturally occurring material made from crushed walnut shells. It is the harder of the soft abrasives, available in a variety of sizes for blast cleaning and polishing softer surfaces that could incur damage from harsher abrasives.
Typical applications include polishing of soft metals, fiberglass, wood, plastic and stone. It can also be used in tumbling operations for polishing gems and jewelry. Silicosis is a deadly condition that affects people who breathe in these chemicals. The measures you need to take for sandblasting media and using silica safely are extensive, so it is often much easier and more beneficial to use another blasting media that fits your application. Most of the benefits of using silica sand for sandblasting media can be met with the use of other materials.
Part of its previous use is due to its sharp edge and uniform size. In the past, silica sand was one of the most common abrasives used. Sandblasting media was versatile and worked well on an array of structures like bridges and ships. If silica must be used today, it is often performed in an isolated blast room with extensive personal protective equipment PPE.
Aluminum oxide blast media is one of the more aggressive blasting materials that can offer fast results and superior strength. Its angular but lightweight design allows it to create deep etching without adding surface stress to thinner substances.
This dry cleaning media is versatile and popular for several reasons. It is a rather soft media that is great for applications where only surface-level removal or modifications are needed. It can help to remove unwanted materials without harming the substrate underneath.
Many industries benefit significantly from this type of abrasion, as it offers effective cleaning without destroying the item. The abrasives are made from crushed urea, polyester or acrylic plastic.
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