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9 Welding Process
With shielding gas, you should only weld in position PA (flat position)
because due to gravity, the shielding gas cannot prevent flow of the
molten metal.
PE
(Overhead position)
PC
(Horizontal position)
PA
(Flat position)
Short-Cycle Drawn-Arc Stud Welding with Shielding Gas
Short-cycle drawn-arc welding with shielding gas is used for welding elements within
a diameter range of 3 to 12 mm (nominal diameter without flange) and welding times
between 10 and 100 ms
Due to the short welding times, the energy input and the weld pool are so small that
also welding elements up to 12 mm diameter can be welded on thin workpieces.
Normally, welding elements with flange (according to current standards) are used,
which forms a larger welding area compared with the shaft diameter. In this way,
higher tensional forces than in the stud shaft can be transmitted in spite of some
pores in the weld zone. To minimize pore formation, the use of shielding gas for stud
diameters upwards of 8 mm is recommended.
Summary of Contents for IT 2002
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