it deals with ELECTRON BEAM WELDING ULTRASONIC WELDING FRANCIS TURBINE

1. PRESENTED BY
 Name
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PRESENTATION 2K15

2.  ELECTRON BEAM
WELDING
 ULTRASONIC
WELDING
 FRANCIS TURBINE

3. ELECTRON BEAM
WELDING

4. Electron beam gun.
 Power supply.
Control system.
Deflection coils.
 Motion equipment.
Vacuum welding
chamber.

6. EBW MACHINE

7. ADVANTAGES
 Narrow fusion zone.
 Reduces distortion.
 Extreme precision.
 Dissimilar materials can join.
 Vacuum chamber gives high purity
weld.
 Repeatability by electrical control
system.
 Welds up to 95% of the strength of the
base material.

8. DISADVANTAGES
 High equipment cost.
 Time delay when welding in vacuum .
 High weld preparation costs.
 X-rays produced during welding.
 Can cause cracking in some materials.

9. APPLICATIONS
 Aerospace.
 Defense.
 Medical.
 Automobile.
 Nuclear.
 Electronic components.

10. ULTRASONIC
WELDING

11.  Sonotrode.
 Anvil.
 High frequency
transducer.

12. ULTRASONIC WELDING MACHINE
ULTRASONICALLY WELDED WIRES

13. ADVANTAGES
 No melting occur.
 Less time required.
 Can weld thin sections.
 Less distortion.
 Can weld dissimilar materials.
 65-100% Parent metal strength.

14. DISADVANTAGES
 High degree of operator skill is
needed.
 Equipment cost is high.
 Life of equipment is short.
 Mostly used to join thin sections.

15. APPLICATIONS
 Glass and plastics can weld.
 Can joint electric and electronic
components.
 Fabrication of nuclear elements.

16. FRANCIS TURBINE

19. ADVANTAGES
No head loss at low discharge of water.
High efficiency than pelton wheel.
Operating head can simply controlled.
Less wear compare to pelton wheel.

20. DISADVANTAGES
Repair and inspection is harder.
Wear in non dirt free water.
Inspection is difficult.
Water hammer effect is a problem.