Compare between Resistance welding and Arc welding on any six points.
|
Sr.No
|
Parameters
|
Resistance Welding
|
Arc Welding
|
| 1 |
Type of welding
|
Plastic/Pressure/Non-fusion welding
|
Fusion/Non pressure welding
|
| 2 |
Principle of heat developed
|
Heat is developed due to I2R losses where R is the contact resistance
|
Heat developed due to arc produced in between electrode and job
|
| 3 |
External filler material required
|
Not required during welding
|
Required during welding
|
| 4 |
External pressure required
|
Required
|
Not required
|
| 5 |
Type of supply used
|
Both AC,DC supply is used. But generally Ac Supply is used.
|
Metal arc welding – Both AC,DC supply is used. But generally Ac Supply is used.and for Carbon arc welding –only DC supply are used
|
| 6 | Voltage & current required |
Low voltage (2 to 20V AC) and high current (40 to 400A, in some cases 5 to 20KA ) supply is required
|
Metal Arc welding Voltage70 to 100V AC and Carbon arc welding voltage50 to 60V DC, Current- 50-600-800A
|
| 7 |
Energy consumption
|
Low (3 to 4 KWH/Kg of deposited material )
|
High (5 to 10 KWH/Kg of deposited material.)
|
| 8 |
Temperature obtained
|
Temperature obtained is not very high (up to 13500C)
|
Temperature obtained is very high (up to 35000C to 60000C)
|
| 9 |
Power factor
|
Low
|
Poor
|
| 10 |
Type of electrode
|
Non-consumable electrodes are used.
|
Coated electrodes are used for metal arc welding and bare electrodes are used for carbon arc welding.(Electrodes may be consumable or non-consumable)
|
| 11 |
Application
|
It is suitable for mass production
|
It is suitable for heavy job, maintenance and repair work
|