In Water jet Machining no abrasive is used. Water jet lonely is used for cutting. In WJM, materials similar concrete, asbestos, wood, rocks, coal, textiles in addition to leather tin endure cut. The cloth is removed yesteryear agency of erosion. These days hydraulic coal mining equally good equally tunneling, descaling in addition to cleaning is equally good done yesteryear this process.
Water Jet Machining (WJM) Principles
As the elevate suggests the H2O jet machining procedure involves the role of high velocity and high pressure level sparse jets of H2O to cutting the job. Water Jet is the flow of high velocity H2O coming out from the nozzle. When high pressure level H2O jet comes out of the nozzle it gains a large kinetic energy. After striking the operate slice this kinetic loose energy is converted to pressure level loose energy inducing high stress on the material. When this induced stress surpasses the ultimate stress of the material, removal starts.
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Schematic Diagram of WJM
The schematic diagram of WJM procedure is real similar to that for AJM. To heighten the pressure level of the H2O a catch or intensifier is used. The system pressure ranges from 1600 to 4000 N/mm2. The accumulator used inward the organization act equally a pulsation remover in addition to an loose energy reservoir. Water passes through the accumulator in addition to and then nozzle through a high pressure level thick tube. The subway scheme cloth may endure stainless steel jacketed with carbon steel. Sintered diamond , sapphire or tungsten carbide may endure used equally the nozzle material. The croak dia. of the nozzle may vary from 0.05 to 0.35 mm.
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| a. Schematic of Water Jet Machining b. Example of workpiece machined yesteryear WJM |
Advantages of Water Jet Machining Process
1. Here H2O is used for cutting which is cheap, non-toxic in addition to readily available.
2. The H2O jet keeps the chore construct clean in addition to dust free.
3. The exclusively moving business office used is the pump, thus the operating and
maintenance expenses are low.
4. The procedure is real safe to use.
5. Very complicated designs in addition to detailed operate tin endure done.
6. There is no harm of the workpiece due to thermal stress. Very piffling rut is
generated.
7. Soft safe similar materials tin endure cutting through this procedure where saw teeth
gets clogged.
2. The H2O jet keeps the chore construct clean in addition to dust free.
3. The exclusively moving business office used is the pump, thus the operating and
maintenance expenses are low.
4. The procedure is real safe to use.
5. Very complicated designs in addition to detailed operate tin endure done.
6. There is no harm of the workpiece due to thermal stress. Very piffling rut is
generated.
7. Soft safe similar materials tin endure cutting through this procedure where saw teeth
gets clogged.
Disadvantages of WJM.
1. Hard Materials cannot endure cut.
2. The initial terms is high.
Applications:
1. Cutting
2. Milling
3. 3D Shaping
4. Turning
5. Piercing
6. Drilling
7. Polishing