Why Abrasive Waterjets?
Abrasivejet machining first started in 1982. Before abrasivejets, there were waterjets which have been in use since 1970.
Abrasivejet machining is widely popular in industries such as the automobile, aerospace, and glass to create precision parts from virtually any material.
An abrasivejet pressurizes water up to 55,000 pounds per square inch (psi) [379,000 kilopascals (kPa)] and 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.
Garnet abrasive is then pulled into this high-speed stream of water, and mixed with the water in a long composite carbide mixing tube.
A stream of abrasive-laden water moving at 1000 feet per second (305 meters/sec) exits the ceramic tube.
This jet of water and abrasive is then directed at the material to be machined.
The jet drags the abrasive through the material in a curved path and the resulting centrifugal forces press the particles against the work piece.
Abrasivejet machinings' 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 water
Abrasivejet machining offers many advantages over other machining methods:
Wide range of materials
Abrasive waterjets can machine a wide range of thicknesses and materials, including metal, plastic, glass, ceramics, stone, and composites.
Materials cut with an abrasivejet have a smooth, satin-like finish, similar to a fine sandblasted finish, reducing the need for secondary operations.
No heat in machining process
Abrasivejets cut material at room temperatures. As a result, there are no heat-effected areas or structural changes in materials. Abrasivejets can also machine hardened metals and materials with low melting points.
Abrasivejets use garnet as an abrasive. Garnet is an envirmentally-safe, naturally-occuring, hard crystal. No noxious gases or liquids are used in abrasivejet machining, nor are there any oils used in the machining process.
No tool changing
A wide range of conventional processes can be performed with this single tool:
Abrasivejet machining produces no heavy burrs. Parts can often be used directly without the need for deburring.
Abrasive Waterjets have changed dramatically in the last few years. New technology has made it possible to cut any shape cleanly and accurately on a wide variety of materials ranging from metals, ceramics, composites, glass, and even marble and granite.
Our Omax Jet Machining centre utilises advanced motion software which greatly increases the speed and accuracy of the cutting process. The result is a tolerance of +/- 0.1mm in thicknesses up to 50mm. (This is not a limitation as greater thicknesses can be cut.)
The finish provided by our Omax jet machining centre is a smooth sandblasted finish, no rough edges, burrs or jagged ends.