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Media Blasting Glossary: Terminology You Should Know

 

The term ‘media blasting’ encompasses a diverse range of methods and technologies. Although we here at Sign LITE specialize in on-site property restoration, people also use various forms of media blasting for metal finishing, vehicle restoration and more! Here’s a quick summary of the media blasting terminology you’ll encounter when it comes to our area of expertise.

 

Blasting Media

Blasting media, also known as the abrasive or grit, is the material used in the media blasting process. Media comes in many kinds of materials shapes and sizes, and choice of media can have a significant impact on the results.

 

Media is often categorized according to its shape, size, hardness and density. Organic materials like walnut shells and corncob are great for fragile surfaces like hardwood; sharp metal media like aluminium oxide is often used for heavy-duty cleaning and etching; smooth, rounded media like sheet shot is ideal for peening metal.

 

Recycled crushed glass is our media of choice since it delivers an even, clean finish and is suitable for treating a range of surface materials. Crushed glass is angular but not sharp, and it produces minimal dust. This material is also inert and non-toxic.

 

Blasting Unit

The blasting unit is the equipment used by an operator to project compressed air and media onto a surface. The set-up varies across industries and applications. For parts finishing and equipment restoration, operators often used fixed blasting units connected to a cabinet designed to contain dust.

 

Since we restore surfaces on-site, Sign LITE uses a smaller, self-contained media blasting unit that can reach locations up to 200 feet away from its power source. A portable unit consists of a handheld apparatus or ‘gun’ connected to a compressor, a hopper that feeds blasting media, and a power source. The operator can adjust the flow of air and media.

 

Interior Media Blasting

Interior media blasting is the process of cleaning an interior surface, such as concrete floors, brick walls or metal fixtures, using media blasting. In the hands of a trained professional, certain blasting methods can be used indoors safely.

 

Wet blasting using crushed glass media is ideal for interior media blasting, as it produces minimal dust and is non-toxic. 

 

Media Blasting

Media blasting, also known as abrasive blasting, is a process by which a material is projected at high speeds onto a surface. The material (media) is propelled by the force of compressed air, water, or a combination of the two. It is cost-effective and environmentally safe, employing recyclable materials and no hazardous chemicals.

 

We use media blasting to means to remove rust, scale, paint, graffiti, gum, or other damage or deterioration from hard surfaces. Different types of media are suitable for different jobs – we’ve found crushed glass media ideal for cleaning pole lights, pylon signs, brick, concrete and many steel surfaces.

 

Watch the media blasting process in action:

 

 

Sandblasting

Sandblasting refers to media blasting using actual sand as the blasting media. Although the terms ‘sandblasting’ and ‘media blasting’ are sometimes used interchangeably, it’s important to recognize the differences between the various methods. Sandblasting poses greater occupational and environmental hazards because it disperses silica; today, most contractors have moved towards safer alternatives like crushed glass as the medium.

 

Wet Blasting

Also known as hydro blasting, wet blasting is a media blasting method that produces less dust. Although it is not truly ‘dustless’, wet blasting significantly reduces the amount of dust by combining the media with water (either by moistening the media prior to blasting or dispersing water through the blasting nozzle).

 

Ask a Media Blasting Expert

Got a surface in need of a good clean? Contact the Sign LITE team for more information on outdoor and interior media blasting.

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Danny Sullivan
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September 4, 2019
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