EutecTrode 2-26 D Stick electrode

EutecTrode EC 4022

Electrode with a high nickel content and a very high output and deposition rate for joints, repairs and surfacing of difficult-to-weld steels. This electrode offers the maximum safety margin for highly stressed welded joints of large workpiece cross-sections due to its excellent hot tear strength and welding properties in constrained positions.

• Excellent weldability in position.
• Output 150 %.
• High deposition rate.
• High elongation.
• Very high notched impact strength.
• Can be used on all types of steel.
• Low coefficient of friction.
• Good corrosion resistance.
• Excellent thermal shock resistance.
• Electrode insensitive to overheating.
• Easy slag removal.

Base metals
All types of steel, joints of different types of steel, steel types of unknown composition, Ni-alloyed steels.

Technical data
EN ISO 14172: ~ E Ni 6062 (NiCr16Fe8Nb)
AWS A 5.11: ~ ENiCrFe-1

Applications
Specially developed for shrink-resistant welded joints and large workpiece cross-sections in the following industries:
Cement industry: rotary kiln rings, walls of ball mills, etc.
Railroad: brake rails, brake shoes, etc.
Construction industry: Machine booms, machine frames, crusher teeth, etc.
Mines: grab arms, transportation machines, etc.

Processing instructions
Preparation
For joints or repairing cracks in thick workpieces: U-shaped grooving with the ChamferTrode 03 or EutecTrode EC4000 grooving electrode (alternating current). For repairs, remove worn or fatigued metal by grinding over.

Preheating
Generally not necessary.
Preheating to 100°C - 150°C may be necessary for high-strength carbon steels.

Welding
In the case of highly shrinkage-prone joints, first plate the joint flanks to reduce mixing with the base metal.
If there is a risk of hardening of the base metal, the first layer is carried out with a 2.5 mm electrode at a maximum oscillation width of 2x the core wire diameter; welding process B is preferable.
Check that there are no cracks.
Then fill the groove with 3.2 or 4.0 mm electrodes, depending on the dimensions, followed by hammering to avoid shrinkage stresses.

Welding parameters
Type of current: =(+)

Welding process A
High amperage for solid workpieces, maximum welding speed.
Ø 2.5mm: 90-110 A
Ø 3.2mm: 130-150 A
Ø 4.0mm: 160-180 A

Welding process B
Low amperage for workpieces that must not be overheated, minimum mixing.
Ø 2.5mm: 70-90 A
Ø 3.2mm: 110-130 A
Ø 4.0mm: 140-160 A

Packaging and storage
Coated rod electrodes should be stored in their original packaging in dry rooms until they are used in order to prevent the coating from absorbing moisture. Rod electrodes that have become damp must be re-dried. We recommend the following re-drying conditions: 350°C / 2 hours.