Legend for Welding
Operation Symbols
Process:
RP = Resistance spot welding
SG = Shielded arc welding (MAG)
MAG = Active gas metal arc welding process
= Gas
welding
= Brazing
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Symbols:
A - Resistance spot welding
B - Plug spot welding
C - Stitch seam spot welding
D - Full seam
E - Full seam, interrupted
F - Gas welding
G - Brazing
8 - Number of welding spots
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Welding
Seam Formation:
A
- Resistance spot welding
Note:
The
required pressure of the electrodes for resistance spot welding with hand
spot welding tongs is not adequate with welding tongs with a length of
over 40 cm/15.7 in.
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B
- Shielded arc plug spot welding
1 - overlapped
2 - offset
a = 10 - 14 mm/0.39 - 0.55 in.
b = 6 mm/0.24 in. hole diameter with 0.75 mm/0.029
in. plates 7 mm/0.28 in. hole diameter with 1.50 mm/0.059 in. plates
c = 20 - 40 mm/0.79 - 1.57 in.
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C - Stitch seam spot welding
1 - overlapped
2 - offset
a = 10 - 14 mm/0.39 - 0.55 in.
b = 3 - 5 mm/0.12 - 0.20 in.
c = 20 - 40 mm/0.79 - 1.57 in.
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D - Full seam
1 - butt welded
2 - overlapped
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E - Full seam, interrupted
1 - overlapped - one side
2 - overlapped - both sides
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