Flux-cored wire for joint welding
Process
In a shielding gas atmosphere a wire of tubular cross section filled
with metallic and non-metallic components is melted off. A rectifier
with constant voltage characteristics is the most commonly used
source of welding power. Wire feed is effected either with conventional-type
integrated or separate wire feed mechanisms. Where bigger wire diameters
are to be welded, the use of multi-wheel wire feed driving rolls
with toothed wheels has been found highly expedient. In the interest
of problem-free welding we recommend the use of water cooled torches
at amperages from 200 A upwards.
Advantages
COST REDUCTION
High deposition efficiency
By virtue of higher current densities, faster melt-off times,and
a higher current-carrying capacity it is possible to increase efficiency
very considerably over that of manual arc welding or solid wire
welding. A further particularly important feature of flux-cored
wires is that they alloy vertical-up welding at elevated amperage
(200 A) in the spray arc range.
Lower filler metal consumption
Because of the good penetration conditions, the general reduction
of the weld preparation angle to 40º and the welding of square edged
butt joints is possible without risking a lack of fusion.
Shorter welding downtimes
Lower spatter and slag formation eliminates the need for time-consuming
weld seam cleaning operations.
RELIABILITY
Flux-cored wires yield a high-grade deposit which is highly resistant
to porosity and cracking.
Forms of supply
Ø 1.2 and 1.0 mm 15 kg basket spools or 5 kg spools.
Ø 1.2 and 1.0 mm 15 kg basket spools or 5 kg spools.
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