Water Jet Machining: Definition, Principle, Working, Parameters, Advantages, Applications

1. Water Jet
Machining
Definition, Principle, Working, Parameters, Advantages,
Applications

2. WATER JET MACHINING DEFINITION
▪ A Non-conventional machining process In which a
high-velocity water jet is used to remove materials
from the surface of the workpiece.
▪ Water jet machining(WJM) is a mechanical energy based
non-traditional machining process used to cut and machine
soft and non-metallic materials.
▪ It uses the high-velocity water jet to cut a non-metallic
workpiece smoothly.
▪ However, It is just similar to Abrasive jet machining.

3. PRINCIPLE-
Here is the principle of water jet machining-
▪ It works on the principle of water erosion.
▪ When a high-velocity water jet strikes the surface, the removal of metal takes place.

4. PARTS AND CONSTRUCTION-
Various part is used to construct the Water jet machine-
• Storage tank
• Pump
• Intensifier
• Tubing
• Accumulator
• Control valve
• Nozzle
• Regulator
• Drain System
Read in-depth about parts and its construction- Water Jet
machining

5. WORKING OF PLASMA ARC MACHINING
• Initially, water from the reservoir is pumped to the intensifier using a
hydraulic pump.
• Intenstifier increases the pressure of water up to 200-400mPa.
• An excess supply of water sends to the accumulator for temporary storage.
• Then the required quantity of pressurized water enters the nozzle through a
control valve and flow regulator.
• When a water jet strikes with very high velocity, it induces a trace on the
workpiece.
• These induced traces further intensify, causing the removal of material for
the workpiece.
▪ Read in-depth about working- Water Jet machining

6. FIG.- DIAGRAM OF WATER JET MACHINING

7. PROCESS PARAMETERS
▪ Various water jet machining process parameters are given below-
• Standoff distance
• Fluid pressure
• Feed rate
• Jet fluid
• Nozzle diameter
▪ Read in-depth about process parameters - Water Jet machining

8. ADVANTAGES OF PLASMA ARC MACHINING
The various advantages of WJM are-
• Excellent precision
• Water is cheap, non-toxic, readily available and can be easily disposed of.
• Water jet approaches the ideal single point tool.
• The process gives a clean and sharp cut.
• Unlike the conventional machining process, this method does not generate heat.
• Best suited for the explosive environment.
• Noise is minimized as the power units and pumps can be kept away from the
cutting point.
• No moving parts, therefore, less maintenance is required.
• Read more on Advantages - Water Jet machining

9. DISADVANTAGES OF PLASMA ARC
MACHINING
The various disadvantages of WJM are-
• Only soft materials can be machined.
• Very high thick materials can not be machined easily.
• The initial cost is high
• Not suitable for mass production.
• Read more here - Water Jet machining

10. APPLICATIONS OF WATER JET MACHINING-
• Useful for cutting materials that are porous, fibrous, granular, or soft.
It includes the materials like corrugated board, rubber, granite,
plywood, glass, aluminum.
• To cut wood, ceramics, composites, leather, foam, wire stripping and
deburring.
• In aerospace and other similar industries, a water jet is cut off asbestos
to minimize airborne dust in the atmosphere.
• Used to cut fiberglass and polyethene automotive parts.

11. THAT’S IT FOR
NOW
▪Thank you for watching
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