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2.4 Welding method
Submerged arc welding (SAW)
For SAW welding the A6 SF welding head is always used. It is available in the
following designs:
Submerged-arc Light duty
Submerged-arc light duty, with a 20 mm connector, which permits a load of up
to 800 A (100%) or 1000 A (60%).
Submerged-arc Heavy duty
Submerged-arc heavy duty, with a 35 mm connector, which permits a load of
up to 1500 A.
Both versions can be equipped with feed rollers for single or twin wire welding (twin-
arc). A special knurled feed roller is available for flux-cored wire, which guarantees
even wire feed without the risk of deformation due to high feed pressure.
For work in confined spaces, (smaller than 50 cm), a special welding head of type
A6 SFE1C is available, which can be installed on the Mastertrac as required.
Tandem welding (submerged-arc)
For tandem welding, a welding head of type A6 SFE2 is always used, which must be
connected to 2 welding power sources and 2 control boxes of type PEK.
The tandem welding head includes 2 single welding heads (A6 SF), each with its
own contact tip. Each contact tip has a maximum rated load of 1500 A.
MIG/MAG welding
For MIG/MAG welding the A6 SG welding head is always used, permitting a max.
load of 600 A. The welding head is water-cooled, with the cooling water supplied by
hoses from connections intended for the purpose.
GB
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