Introduction to Welding (Leaving Cert Engineering): Flashcards
📚Flashcards
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15 cards from this deck
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Practise the cards
15 cards from this deck
Definition of welding
Definition of welding
Permanently joins metals by melting and fusing them at molecular level
Filler metal purpose
Filler metal purpose
Additional metal added to strengthen the weld joint
Arc burn
Arc burn
Defect from arc striking base metal outside weld area
Base metal
Base metal
Original metal pieces being joined together
Heat-affected zone (HAZ)
Heat-affected zone (HAZ)
Area around weld that heats enough to change properties but doesn't melt
Cover pass
Cover pass
Final weld pass creating the finished surface
DCEP stands for
DCEP stands for
Direct Current Electrode Positive (reverse polarity)
DCEN stands for
DCEN stands for
Direct Current Electrode Negative (straight polarity)
Spot welding metal thickness range
Spot welding metal thickness range
0.5 to 3 mm
Five types of weld joints
Five types of weld joints
Corner, edge, lap, tee, and butt joints
Strongest weld joint type
Strongest weld joint type
Butt joint
Corner joint shape
Corner joint shape
L-shape where two pieces meet perpendicularly at edges
Tee joint configuration
Tee joint configuration
T-shape where edge meets surface at right angle
Reference line in welding symbols
Reference line in welding symbols
Horizontal line foundation showing weld specifications
Weld-all-around symbol
Weld-all-around symbol
Circle at junction indicating weld around entire joint