Does seamless fluxcored wire results in higher quality and less welding cost in shipbuilding?
Seamless flux-cored wires represent a remarkable innovation in the field of welding, particularly within the shipbuilding sector. These wires bring a host of benefits when compared to their traditional counterparts. A notable benefit is the potential for reduced welding costs. Below, we will explore the mechanisms through which seamless flux-cored wires can contribute to severe cost savings in your welding operations.
1 meter FCAW fillet weld with an height of 4 mm is costing approximately € 6,- per meter including labor, welding wire, gas and devaluation of welding equipment. We can see that the cost for welding is divided as follow:
Labor cost | 80% | |
Weldwire cost | 7,5% | |
Gas cost | 7,5% | |
Devaluation cost | 5% |
Especially due to the high labor cost between € 40,- / € 60,- per hour in the Netherlands we see that 80% of the welding cost are absorbed by labor, so this is the part where we should put the focus on. If we manage to increase welding time with 10% only, we already saved 8% of the total weld costs. This means that with a better (sometimes more expensive) wire, welding costs are reduced.
By choosing for a Fluxcored arc welding wire (FCAW) over a solid welding wire (GMAW), we’re able to significantly boost the ampere output. The illustration below shows how an increase in amperage affects your welding costs.
the total price of 1 meter welding seam in PF position at 130 ampere (GMAW)
the total price of 1 meter welding seam in PF position at 240 ampere (FCAW)
- 240 Ampere in PF position results in a deposition increase of 200%!
- Impact strength properties wen exceeding 2 kj heat input are still above 27 joules
- Copper-coated surface reduces tip replacements of at least 5 times
- Seamless means no redrying or special storage requirements, each spool can stay on the machine till next working day
- No risk of hydrogen cracks or porous welds due to moisture issues
- Less wires and procedures needed because of the -40°C approval
- Reduced slag system (12%) that results in more recovery and less waste
- No twist in the wire means excellent for robotic welding for starts on the correct spot
- No feeding issues even with single roll wire feeders and long torches
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