18. AWJM cuts 10 times faster than the conventional machining methods of composite materials
19.
20. The Machining System The basic machining system of AWJM incorporates the following elements: Water delivery Abrasive hopper and feeder Intensifier Filters Mixing chamber Cutting nozzles Catcher
43. Deburring of cross holes, slots, and threads in small precision parts that require a burr-free finish, such as hydraulic valves, aircraft fuel systems, and medical appliances
65. As the tool is not shaped to conform to the produced feature, it is mainly for cutting or slitting or drilling and not for profiling or surface generation.
66. It is however used for polishing and etching. Very low MRR in polishing, i.e., < 0.015 cm3/min.
67.
68. Water Jet Machining MACH-3 Velocity The hydraulic pump is powered from a 30- kilowatt (kW) electric motor and supplies oil at pressures as high as 117 bars in order to drive a reciprocating plunger pump termed an intensifier (4 bar to 3800 bar).
69. Water Jet Machining The accumulator maintains the continuous flow of the high- pressure water and eliminates pressure fluctuations. It relies on the compressibility of water (12 percent at 3800 bar) in order to maintain a uniform discharge pressure and water jet velocity, when the intensifier piston changes its direction.
71. Operating Summary Fluid Type : Water or water with additives Additive : Glycerin, Polyethylene Oxide or long chain polymer Pressure : 100 to 1000 MPa Jet Velocity : 300 to 1000 m/min Power : Up to 40 Kw Metal Removal Rate : 0.5 mm3/s for metals and alloys, 20 mm3/s for Elastomers Nozzle Material : Hardened steel, WC synthetic sapphire