Welding economy

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.

120

100

Switching from MMA to FCAW with Elga Ceramic Backing

80

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.

60

40

20

0

Using a 2,5 mm electrode:

MMA

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.

backing

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

welding):

Switching from two-sided welding to singlesided with flux cored wire and ceramic

backing

Two-sided welding

means additional

time for:

FCAW with

Total time comparison

Single-sided welding

with flux cored wire

and backing:

Rewelding of reverse side

100

Gouging & grinding

90

Mounting of backing

80

Root welding

70

60

50

40

30

1. Back-gouging

2. Grinding

3. Rewelding on the reverse side, depending on

the construction.

Substantially higher

productivity since all

”extra work” has been

eliminated.

20

10

0

1

Two-sided welding

246

2

Single-sided welding

with backing