Abrasive blasting also called sandblasting involves high pressure propulsion of streams of abrasives against surfaces. There are four main purposes for using this process on surfaces. The four applications are removing surface contaminants, shaping surfaces, smoothening rough surfaces, and roughening smooth surfaces. Varying pressure levels in the abrasive determined which of the four applications the method can do. For skillfully performed sandblasting Los Angeles offers some of the best specialists to consult before checking other options.
There are two main mechanisms through which the abrasive is propelled. The first method involves use of pressurized fluid, which can be air or water. The second mechanism involves the use of a centrifugal wheel to push the abrasive media. The first application of this process was in 1870. It was also patented the same year by Benjamin Chew Tilghman. At the time of patenting, sand was the main abrasive media in use, but that has changed since.
With everyday that the uses of sandblasting increase, people continue coming up with different ways of achieving the process. Currently, types of blasting in application are numerous. Among them are, dry ice, hydro, micro-abrasive, automated, bristle, bead, wheel, and wet abrasive blasting. Some methods are named after the abrasive they use. Not all the methods can be used for the same application. Some are more suited for certain uses than others.
Wet abrasive blasting uses abrasives that have been made wet through addition of water or other liquids. Fine-textured media is normally used for the process. The media can be of any material such as steel, glass, plastic, wood, and stone. Most contaminants are removed effectively by this method. Some among the surface contaminants that can be removed using this method are grease, oil, graffiti, dust, asbestos, radioactive material, old paint, and mold among others. This is partly due to the fact that the cleaning ability of abrasives is enhanced by adding water and cleaning agents.
Dry media blasting has fewer advantages compared to wet abrasive blasting. First, wet processing may be done using type of devices currently available. Hand cabinets, automatic production machinery, total loss portable units, and walk-in booths are the major types of devices available. Taken taken on both processes is also similar provided the same material is used.
The major advantage associated with blasting using wet media is that the surface is protected from much damage. The fluid in the abrasive creates a lubricating cushion between the substrate to be processed and the abrasive. This minimizes the impact of force with which the material is propelled. Additionally, impregnation of foreign materials into the substrate does not occur and media breakdown is kept lowest.
Use of dry media processing results into static forces which cause dust particles to cling onto surfaces. This never happens with wet blasting because the surface gets discharged of all static forces by the liquid. Also, a single equipment can work with more than one abrasive material without concern for contamination.
The levels of cleanliness achieved through use of wet materials makes the process to be more preferred for use in surface preparation. Surfaces can be prepared for bonding or coating operation using blasting. The resultant surfaces are normally very clean and improve the strength of the bond formed.
There are two main mechanisms through which the abrasive is propelled. The first method involves use of pressurized fluid, which can be air or water. The second mechanism involves the use of a centrifugal wheel to push the abrasive media. The first application of this process was in 1870. It was also patented the same year by Benjamin Chew Tilghman. At the time of patenting, sand was the main abrasive media in use, but that has changed since.
With everyday that the uses of sandblasting increase, people continue coming up with different ways of achieving the process. Currently, types of blasting in application are numerous. Among them are, dry ice, hydro, micro-abrasive, automated, bristle, bead, wheel, and wet abrasive blasting. Some methods are named after the abrasive they use. Not all the methods can be used for the same application. Some are more suited for certain uses than others.
Wet abrasive blasting uses abrasives that have been made wet through addition of water or other liquids. Fine-textured media is normally used for the process. The media can be of any material such as steel, glass, plastic, wood, and stone. Most contaminants are removed effectively by this method. Some among the surface contaminants that can be removed using this method are grease, oil, graffiti, dust, asbestos, radioactive material, old paint, and mold among others. This is partly due to the fact that the cleaning ability of abrasives is enhanced by adding water and cleaning agents.
Dry media blasting has fewer advantages compared to wet abrasive blasting. First, wet processing may be done using type of devices currently available. Hand cabinets, automatic production machinery, total loss portable units, and walk-in booths are the major types of devices available. Taken taken on both processes is also similar provided the same material is used.
The major advantage associated with blasting using wet media is that the surface is protected from much damage. The fluid in the abrasive creates a lubricating cushion between the substrate to be processed and the abrasive. This minimizes the impact of force with which the material is propelled. Additionally, impregnation of foreign materials into the substrate does not occur and media breakdown is kept lowest.
Use of dry media processing results into static forces which cause dust particles to cling onto surfaces. This never happens with wet blasting because the surface gets discharged of all static forces by the liquid. Also, a single equipment can work with more than one abrasive material without concern for contamination.
The levels of cleanliness achieved through use of wet materials makes the process to be more preferred for use in surface preparation. Surfaces can be prepared for bonding or coating operation using blasting. The resultant surfaces are normally very clean and improve the strength of the bond formed.
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