BF 6.30
Agglomerated Welding Flux
Description & applications
A semi-basic flux for joint welding of high quality pipe steel. Especially recommended for single and multi-wire (up to 5 wires) submerged arc processes in the two-run technique.
Very good weld appearance and slag release providing flat welds with low reinforcement and flat weld interfaces free from undercut. High grain hardness and resistance to abrasion and a low consumption rate with good flux feeding properties in the transport and recovery system.
As a result of low hydrogen levels (less than 5 ml/100 g in the weld deposits) and oxygen levels of about 350 ppm as wel as uniform metallurgical behavior with low silicon and manganese pick-up, constant mechanical properties are obtained even when welding thick-walled tubes in the two-run technique.
Classification
| EN 760 | ISO 14174 |
|---|---|
| SA AB 1 66 AC H5 | S A AB 1 66 AC H5 |
Typical weld metal composition (%)
| SiO2 + TiO2 | Al2O3 + MnO | CaO + MgO | CaF2 |
|---|---|---|---|
| 20 | 35 | 20 | 20 |
Packaging
25 kg PE-bags or 500-1250 kg Big-Bags
Application Instructions
Production of longitudinal and spiral welded steel pipes starting at X60 according to EN 10208-2/API-5L/5LX/LS.
Metallurgical Behaviour
Flux Type
Aluminate-Basic
Flux Density
0.95 kg/l
Grain Size
2-16; Tyler 10 x 65
Current-Carrying Capacity
up to 1000 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.