Outline
- Page 1
- 1.0 Resistance Welding
- 1.1 Time Effect
- 1.2 Weld Pressure
- Page 2
- 1.3 Weld Power Supplies
- 1.31 Synchronous AC Supply
- 1.32 Capacitive Discharge Power Supply
- Page 3
- 1.4 Dumet To CCFE (Copper Clad Iron)
- 1.5 Pressed and Sintered Tantalum to Tantalum Wire
- Page 4
- 2.0 Percussive Welding
- 2.1 Applicability of Percussive Welding
- 2.2 Design of Work Pieces
- 2.3 Percussive Weld Power Supplies
- Page 5
- 2.4 Arc Time and Heat Affected Zone
- 2.5 Welding Energy
- 2.6 Welding Force
- 2.7 Arc Starting
- 2.8 Progress of the Percussive Weld
- Page 6
- 2.9 Control of Parameters
- 2.9.1 Welding Current
- 2.10 Molybdenum to Zirconium Copper
- 2.11 Tantalum Welding for Capacitors
- 2.12 Nickel Wire to Tantalum Anode Riser Wire
- Page 7
- 3.0 Glossary of Terms
- Page 8
- 4.0 Advantages and Disadvantages of Resistance Welding and Percussive Welding
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Component InterTechnologies
2426 Perry Highway
Hadley, PA USA 16130
Tel: 724-253-3161
Fax: 724-253-3853
Email:
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Advantages and Disadvantages of Resistance Welding and Percussive Arc & RF "Start" Percussive Welding
Resistance Welding
Advantages |
Disadvantages |
This technique allows for very small and strong welds of
similar metal such as CCFE to dumet. Welding speed in
On large diameter work pieces, multiple AC line cycles can be used to heat work more slowly.
Welding voltage is low: |
Work pieces need to be prepared with a relatively high resistance point at weld junction. Welding currents are high, requiring very tight low-resistance weld jaws that wear more rapidly due to material pressure and heat. |
Percussive Arc & RF "Start" Percussive Welding
Advantages |
Disadvantages |
Welding of dissimilar metals, copper to steel.
These welders typically have a long wear life for welding jaws due to very short relatively low current welding pulse. Welding of metals with high melting point such as tungsten, moly. |
Welding is typically more dirty and less smooth than Resistance welding.
With nib start percussive arc welding, a starting nib must be cut onto work pieces.
With "RF" start percussive arc welding, work pieces must be free of oil or dirt. Welding voltage is high: 50 to 300 VDC. |