In our industry there are many terms specific to blasting and restoration. Here are a few of the most frequently asked questions along with explanation of some of the features and benefits of blasting with baking soda, sand and calcium.
Baking soda is a very versatile blasting media and good for many applications. It is non-damaging to metal, and non-harmful to people, animals or the environment. Baking soda is environmentally friendly and safe for bearings, seals, and gaskets safe. Baking soda blasting is great for a variety of applications. It is useful for blasting around glass or if you are blasting a vehicle and don’t want to warp the steel. Baking soda is also used in mill applications when blasting felts. It is often used for blasting wood. This type of media has an easy clean up.
Sand is the best media for blasting in places where there is a large amount of scale or rust, for example heavy machinery such as a rock crusher. It is good for blasting all kinds of heavy equipment. Another media you can use for these applications is crushed glass.
Sand is the best media for blasting in places where there is a large amount of scale or rust, for example heavy machinery such as a rock crusher. It is good for blasting all kinds of heavy equipment. Another media you can use for these applications is crushed glass.
Calcium can be used for blasting heavy equipment instead of sand. It is a great media choice also for an aluminum hulled boat. Using sand in this application could cause hull penetration. The choice of baking soda for a media in a boat application would also be safe but it would be a lot slower than calcium.
In order to provide you with a realistic estimate, we need to understand the nature and scope of the project. This will allow us to evaluate such things as type of project, material to be blasted, access, location, obstruction that have to be dealt with or worked around, and any other special issues relating to the work. Seeing the surface to be blasted is an essential part in our preparation process. We need to be able to identify the condition of the item, the materials involved, and also what coatings or paints are on the equipment. For example, some boat hulls have just paint and others have a paint with a filler, vehicle blasting rust amount or special decals or accessories.
Baking soda is easier to clean up than sand. Clean up and containments are handled by us unless the customer requests otherwise. Sometimes due to the nature of the application or the location (for example a mill application) the customer prefers to handle it themselves.
Sodablasting is a non-destructive method for many applications in cleaning, paint stripping, automotive restoration, industrial equipment maintenance, graffiti removal, molecular steel passivation against rust, oil removal by saponification and translocation, masonry cleaning and restoration, soot remediation, boat hull cleaning and food processing facilities and equipment cleaning.
The crystalline structure of Bicarbonate of Soda is soft and friable, but on impacting a surface at high speed it explodes and fragments taking part of the surface coating with it. Imagine this process happening tens of thousands of times per second; this is how Sodablasting works! Under ideal circumstances the Soda is able to penetrate the “adhesion plane” where the coating meets the substrate. Here the crystals are literally forced between the two surfaces lifting the coating away from the substrate without damaging it. Bicarbonate of Soda has a hardness of 2.4 on the Mohs scale. Silica sand blasting has a hardness of 7 and Aluminium Oxide 9. Food Grade Bicarbonate of Soda/ Sodium Bicarbonate is used as the blast media.
In 1972, New York State engineers were challenged with the daunting task of cleaning and restoring the Statue of Liberty without damaging the statue or the environment. The conventional methods in use at the time would not only damage the statue’s delicate copper plates, but would create harmful waste in the surrounding waterways. Soda blasting was thus invented to accomplish the task of cleaning the statue, while keep surrounding environment safe.
Soda blasting does not result in heat build-up in the substrate, which is a common problem with Sandblasting, heat transfer to the substrate can contribute to warping and metal fatigue.
A major advantage of soda blasting is the fact sodium bicarbonate does not break the surface tension of metals; thus, the problem of flash rusting is eliminated.
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