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About Water Jetting A water pump pressurizes water up to 55,000 pounds per square inch (psi), then forces it through a small sapphire or diamond orifice at 2500 feet (762 meters) per second, or about two and half times the speed of sound. An abrasive is pulled and mixed in the high-speed stream of water in a long composite carbide mixing tube. The stream of abrasive-laden water is directed at the material to be machined and exiting the ceramic tube at 1000 feet per second. The abrasive jet's cutting action is a grinding process, but rather than using a solid grinding wheel, the forces and motions of the cutting action are provided by the water and abrasive mix. |
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