Ce diaporama a bien été signalé.
Nous utilisons votre profil LinkedIn et vos données d’activité pour vous proposer des publicités personnalisées et pertinentes. Vous pouvez changer vos préférences de publicités à tout moment.
Bijon Saha
DME – 51
2nd Year
PPT On :- Spot Welding
WHAT IS WELDING?
 Welding is a permanent
metal joining process by
which two similar or
dissimilar metals may be
joined by...
Different TYPES OF WELDING
SPOT WELDING
 Resistive Spot Welding
is a process in which
contacting metal
surfaces are joined by
the heat obtained from...
Different TYPES OF SPOT WELDING
MACHINES
PARTS OF THE MACHINE
WORKING PRINCIPLE
H = I2RT
I – Current
R – Resistance of the
conductor
T – Time of current flow
HOW IT WORKS?
ADVANTAGES:
 Quick and Easy
 No need of Flux and Filler metals
 Multiple sheets joined together at the same
time
 No d...
LIMITATIONS:-
 Difficulty for maintenance or repair
 Generally have higher cost than
most arc welding equipment
 Low te...
APPLICATIONS
 Automobile industry
 Dental Prosthesis
 Batteries
 Nuts and Bolts
Spot welding
Prochain SlideShare
Chargement dans…5
×

Spot welding

Spot welding and how it is done

  • Identifiez-vous pour voir les commentaires

Spot welding

  1. 1. Bijon Saha DME – 51 2nd Year PPT On :- Spot Welding
  2. 2. WHAT IS WELDING?  Welding is a permanent metal joining process by which two similar or dissimilar metals may be joined by heating them to a suitable temperature with or without filler metals and with or without external pressure.
  3. 3. Different TYPES OF WELDING
  4. 4. SPOT WELDING  Resistive Spot Welding is a process in which contacting metal surfaces are joined by the heat obtained from resistance to electric current.
  5. 5. Different TYPES OF SPOT WELDING MACHINES
  6. 6. PARTS OF THE MACHINE
  7. 7. WORKING PRINCIPLE H = I2RT I – Current R – Resistance of the conductor T – Time of current flow
  8. 8. HOW IT WORKS?
  9. 9. ADVANTAGES:  Quick and Easy  No need of Flux and Filler metals  Multiple sheets joined together at the same time  No dangerous open flames  Saves production cost  Dimensional Accuracy
  10. 10. LIMITATIONS:-  Difficulty for maintenance or repair  Generally have higher cost than most arc welding equipment  Low tensile and fatigue strength  The full strength of the sheet cannot prevail across a spot welded joint
  11. 11. APPLICATIONS  Automobile industry  Dental Prosthesis  Batteries  Nuts and Bolts

×