BF 3
Agglomerated Welding Flux
Description & applications
BF 3 is an agglomerated aluminate-basic flux with high current-carrying capacity, specially designed for the welding of windmill towers using tandem – arc. It is also suitable for joint welding of unalloyed and low alloy structural steels, pipe steels, boiler steels and fine grain steels. The flux is suitable for single and multilayer welding of longitudinal, circumferential and fillet welds. It can be used for single, tandem, twin and multi wire welding systems. Excellent slag removal in narrow groove welds of thick wall sections. Typical characteristic of this flux is a medium Mn and Si pick up as well as very low diffusible hydrogen level. It is suitable for both AC and DC welding.
Classification
| ISO 14174 | EN 760 |
|---|---|
| S A AB 1 67 AC H5 | SA AB 1 67 AC H5 |
Typical weld metal composition (%)
| SiO2+TiO2 | Al2O3+MnO | CaO+MgO | CaF2 |
|---|---|---|---|
| 20 | 40 | 25 | 10 |
Packaging
Plastic bags of 25 kg
Application Instructions
Joint welding of no alloy and low alloy structural steels acc. to. EN 10025. Fine grain steels with Ys < 420 MPa and boiler steels such as P265GH (H II) and 16Mo3.
Flux Type
Aluminate-Basic
Flux Density
1.1 kg / dm³ (l)
Grain Size
acc. to ISO 14174: 2 - 20
Current-Carrying Capacity
up to 1,500 A (DC or AC) using one wire
Storage and redrying
The flux can be stored up to 3 years after delivery in dry storage rooms. Flux that has picked up moisture has to be redried at 150 to 250°C effective flux temperature.