to be easy for ferther edition

1. A Presentation ON
Submitted by:
Vishwanath S
5th sem
ME Department

2.  It is the fastest growing machining process.
 One of the most versatile machining processes.
 Compliments other technologies such as milling,
laser, and plasma.
 True cold cutting process – No HAZ , mechanical
stresses or operator and environmental hazards.
 Not limited to machining – but also used in food
industry applications.

3.  1930s: Mining Industry to remove stones and coal
 1960s : Need to cut advanced materials for
aerospace industry
 1970s : First attempts were to employ WaterJet to
cut advanced composites for aerospace
applications.
 1980s: First commercial AWJ machines

4.  Water jet cut
 Abrasive jet cut
 Abrasive water suspension jets
 Water jet :
 Water jets are used for cutting
soft materials
 Water Jet Machinable Materials
 Like Soft rubber, foam, tin foil,
carpet, soft gasket material

5. Abrasive water jets for hard materials
An abrasive element is added to the water
beam to assist cutting
 Abrasive Water Jet Machinable
materials: Titanium, aluminum, stone,
hard rubber,
hardened tool steel

6. Fig. Structure of a water jet machining.
Slurry system mixes the water with abrasive
Abrasive water through out the system
The abrasive water is accelerated into the steam
Steam out the orifice

7. Pump
 Nozzle
 Orifice
 Control System

9.  No heat affected zone
 Saves the raw material
 Wide range of materials
 Faster than any other technique
 Flexible Machining Integration
 Does Not Need a Starting Hole
 Ability to Cut in Any Direction
 Environmentally friendly
 No need for surface finish
 No tool changing
 Minimal Fixturing Required

10.  Limited number of materials can be cut
economically
 Very thick parts can not be cut with Water Jet
 Cutting and still hold dimensional accuracy
 Slower cutting
 Higher entry cost

11.  No Heat Affected Zone
 Can Cut Through
Reflective Materials
 Can Cut Uneven Surfaces
Smoothly
 Environmentally friendly
 Can Cut Up to 12” in hard
materials (Ti, SS)& 24” in
Rubber
 Minimal Heat Affected
Zone
 Reflects on Shiny
Surfaces
 Laser Diffracts and
Looses its Focus
 Produces Toxic Fumes
 Max. Depth 0.5 – 0.75”

12. Aerospace
Automotive
Food Processing
Electronics and
PCBs
Marble Industry
Concrete

13. Ceramic part cut with an abrasive water
jet
Steel gear and rack cut with an abrasive
water jet

14.  It is relatively a new technology which has caught on
quickly and is replacing century-old methods used for
manufacturing
 Used not only in typical machining applications, but food
and soft-goods industries
 As material and pump technology advances faster cutting
rates, longer component life and tighter tolerances will be
achievable
 Paves the way for new machining processes that embrace
simplicity and have a small environmental impact

15. Questions……?
THANK YOU…  