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Media

 

Multiple Media Choices Available for Any Project

The term Media is often misused. Media is any material that can be propelled against a surface as an abrasive to remove a material covering exposing the surface below. There are numerous commercial medias used today. Media choice will determine the end result of the project. That is why A to Z Soda Blasting offers many choices far beyond just Soda!

Sodium Bicarbonate

The sodium bicarbonate used in the blasting process is a larger particle than the baking soda used in the food industry, although it is the same purity. The particles (baking soda) are propelled by compressed air through specialized blasting pots. The blasting pots use air pressure that can be varied from 20psi on soft surfaces to 120psi on harder surfaces. The now pressurized sodium bicarbonate particles remove coatings by the energy released when the particles explode as they contact the surface being cleaned.

Sand blasting, on the other hand, removes the coatings by wearing it away (abrasively). This is also the result when the sand hits the base surface being cleaned; the base surface is worn away and damaged. Sodium bicarbonate has a non-abrasive action that allows it to be used on surfaces that the currently popular abrasive media (sand blasting) would damage i.e.: aluminum, stainless steel, brick, stone, glass, fiberglass, wood, plastic, seals, bearings, splines, radiator cores, and hydraulic cylinders. Since there is no heat build up warped metal is eliminated. The non-flammable properties allow sodium bicarbonate to be used in the petroleum industry where other methods posed a higher risk. Sodium bicarbonate breaks down hydrocarbons, which makes soda blasting an excellent method of cleaning engines, engine parts, and other areas where oil and grease are present.

Another major advantage of soda blasting is that it does not break down the surface tension of metals, thus the problem of flash rusting is eliminated. Sodium bicarbonate can act as a rust inhibitor, which will leave a protective coating on the surface being cleaned. This allows for time to pass before the surface has to be painted. This is unlike a sand blasted surface that must be painted immediately. When the time arrives to paint the surface, the protective coating (soda) can be removed by an application of a vinegar/water mixture.

Walnut Shell

Walnut shell grit is the hard fibrous product made from ground or crushed walnut shells. When used as a blasting media, walnut shell grit is extremely durable, angular and multi-faceted, yet is considered a 'soft abrasive'. Walnut shell blasting grit is an excellent replacement for sand (free silica) to avoid inhalation health concerns.

Cleaning by walnut shell blasting is particularly effective where the surface of the substrate under its coat of paint, dirt, grease, scale, carbon, etc. should remain unchanged or otherwise unimpaired. Walnut shell grit can be used as a soft aggregate in removing foreign matter or coatings from surfaces without etching, scratching or marring cleaned areas.

When used with the right walnut shell blasting equipment,
common blast cleaning applications include stripping auto and truck panels, cleaning delicate molds, jewelry polishing, armatures and electric motors prior to rewinding, deflashing plastics and watch polishing. When used as a blast cleaning media, walnut shell grit removes paint, flash, burrs and other flaws in plastic and rubber molding, aluminum and zinc die-casting and electronics industries. Walnut shell can replace sand in paint removal, graffiti removal and general cleaning in restoration of buildings, bridges and outdoor statuaries. Walnut shell is also used to clean aircraft engines and steam turbines.

Corn cob blasting grit is a safe blasting media for delicate parts in addition to use as the preferred blasting grit for log homes and other wood surfaces. Corn cob grit abrasive will remove surface contamination, debris and coatings with little to no impact on the substrate.

Corn cob is a biodegradable, organic blasting media that is obtained from the hard woody ring of the cob. It is resistant to break down and can be re-used multiple times in the blasting process. Corn cob is available in a variety of grit sizes and presents no health or environmental hazards. Virtually dust-free blasting with no sparking leaves a clean and dry surface.

Corn Cob

Aluminum Oxide

It is the most widely used abrasive grain in sand blast finishing and surface preparation because of its cost, longevity and hardness. Harder than other commonly used blasting materials, aluminum oxide grit powder penetrates and cuts even the hardest metals and sintered carbide.

Approximately 50% lighter than metallic media, aluminum oxide abrasive grain has twice as many particles per pound. The fast-cutting action minimizes damage to thin materials by eliminating surface stresses caused by heavier, slower cutting media.

Aluminum oxide grit powder has a wide variety of applications, from
cleaning engine heads, valves, pistons and turbine blades in the aircraft industry to lettering in monument and marker inscriptions. It is also commonly used for matte finishing, as well as cleaning and preparing parts for metalizing, plating and welding. Aluminum oxide abrasive grain is the best choice for an abrasive sand blasting and polishing grain as well as for preparing a surface for painting.

Crushed Glass

Glass grit is lighter weight than many slags, allowing for increased consumption efficiency and production time – up to 30-50% less glass grit used. Crushed glass grit delivers very low particle embedment, which produces a whiter, cleaner finish. Since crushed glass grit is manufactured from bottle glass, it contains no free silica which is commonly found in blasting sand. The use of post-consumer glass directly benefits the environment by diverting waste from landfills. Crushed glass grit is free of heavy metals such as arsenic, lead, asbestos, beryllium, titanium, etc., all typically found in coal and mineral slags.

Plastics

Plastic abrasives deliver a high stripping rate and consistent performance, ideal for paint stripping, mold cleaning, deflashing and deburring. Sandblasting, using compressed air, is traditionally used to prepare surfaces for coatings. The sharp particles of aluminum oxide or other media abrade the surface. Incidental corrosion, rust, and old coatings are removed in the process, leaving a good surface for paint adhesion.  However, substrates other than steel can often not tolerate this aggressive surface preparation and, as a consequence, wet chemical strippers are employed to remove coatings. Aluminum, brass and plastic composites, including fiberglass, are often treated in this way.  Using plastic abrasives has been proven to significantly reduce the generation of hazardous waste that using wet chemical strippers can cause. In addition, the use of plastic abrasives has proven to be faster, less damaging to the substrate and much less expensive than wet chemicals. Since the plastic abrasive is harder than the coatings to be removed, yet softer than the substrate, coatings can actually be stripped three or four times without damage to the surface.

Plastic abrasives are sensitive to substrates, including aluminum and other delicate metals, composites and plastics, yet tough enough to take care of the most demanding decoating and surface finishing needs efficiently.

Steel Grit

Steel grit blasting is ideal for aggressive cleaning applications. Steel grit will quickly strip many types of surface contaminants from steel and other foundry metals. Steel grit is softer than aluminum oxide and does not fracture as easily, making it ideal for aircraft and aero-space applications. The angular nature of steel grit produces an etched surface on metal for superior adhesion of paint, epoxy, enamel, rubber and other coatings.

Pumice

Pumice is a natural mineral - volcanic ash formed by the solidification of lava that is permeated with gas bubbles. Pumice powder is used chiefly as an abrasive and is among the softest of all media. Use pumice powder for less aggressive operations where the protection of the surface is of supreme importance.

Text Box: 817-808-1061
Text Box: 817-808-1061
Text Box: Click here for tips on what to do after your item has been blasted.

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Automotive/restorations

 

Corvettes/Fiberglass

 

Graffiti removal

 

Brick/Stone/Concrete

 

Food Industry

equipment

 

Airplane Paint Stripping

 

Log Home Cleaning

 

Fire Restoration

 

Engine and engine components 

 

Machinery finishing

 

Cast Aluminum

 

Swimming pool de-painting

 

Farming equipment

 

Trailers

 

Rail cars

 

Wood surfaces/decking

 

Boat bottom paint removal

 

Neutralizes surface rust

  

And Much More!

Works on virtually any surface

 

:All metals

 

Aluminum

Alloys

 

Brick

 

Cement

 

Composites

 

Fiberglass

PVC

 

Plastics

 

Stone/tile

 

Wood

 

 

 

 

A to Z Soda Blasting Service, LLC

 

North Texas Oldest & Most Experienced

 

Providing Media Blasting Services

From Soda to Sand