Resistance Seam Welding (Leaving Cert Engineering): Flashcards
📚Flashcards
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Practise the cards
13 cards from this deck
How does resistance welding generate heat?
How does resistance welding generate heat?
Through electrical resistance when current flows through materials
What materials are NOT needed in resistance welding?
What materials are NOT needed in resistance welding?
External heat sources, fluxes, filler materials
Two main types of resistance welding
Two main types of resistance welding
Spot welding and seam welding
What spot welding creates
What spot welding creates
Individual weld points
What seam welding produces
What seam welding produces
Continuous weld lines
Type of electrodes used in seam welding
Type of electrodes used in seam welding
Wheel electrodes
Type of current used in seam welding
Type of current used in seam welding
Pulsing current
How continuous seams form in seam welding
How continuous seams form in seam welding
Overlapping spot welds from pulsed current
What material are wheel electrodes made of?
What material are wheel electrodes made of?
Copper
Seam welding application: containers
Seam welding application: containers
Steel containers, tins, cans, drums
Best metal thickness for seam welding
Best metal thickness for seam welding
Thin to medium thickness
Purpose of step-down transformers
Purpose of step-down transformers
Transform high voltage to lower, safer voltage
Purpose of rectifiers in resistance welding
Purpose of rectifiers in resistance welding
Convert AC to DC current