Labour cost €/ m
The use of ceramic backing offers significant economic advantages. Take a look at a couple of examples
based on labour cost and time to complete the job.
Switching from MMA to FCAW with Elga Ceramic Backing
In this example we have used an average welding
speed (55 mm/min for MMA and 150 mm/min for
FCAW with backing) and a labour cost of 40€/h
for the welder.
Using a 2,5 mm electrode:
Typical deposition rate is 0,6-0,7 kg/h.
Welding speed 40-70 mm/min.
Characteristic of MMA is a low arcing time factor.
With a 2,5 mm electrode, only a 50-70 mm weld
length can be achieved between electrode changes.
Typical deposition rate is 2,5-3,0 kg/h.
Welding speed 100-200 mm/min.
Characteristic of flux cored wire with backing is a
very high arcing time factor. A 1 meter long root
pass can be welded non-stop.
Flux cored wire and backing (single-sided
Switching from two-sided welding to singlesided with flux cored wire and ceramic
Total time comparison
with flux cored wire
Rewelding of reverse side
Gouging & grinding
Mounting of backing
3. Rewelding on the reverse side, depending on
productivity since all
”extra work” has been
Two-sided welding Single-sided welding