Saw wire & Flux
GEEFLUX 521
Fluoride ? basic type
Welding flux for submerged ?arc welding process
Characteristics :
Geeflux-521 is an agglomerated fluoride-basic type flux, preferably used for welding of high-strength fine grain structural steels, as well as cryogenic steels and steels resistant to ageing. Owing to its neutral behaviour as to the pick-up and burn-out of the elements silicon and manganese, it is advisable to use wire electrodes having a higher silicon and manganese content. Geesaw 521 flux is suitable to be employed for welding offshore components. The weld metal produced in combination with corresponding wire electrodes meets high toughness requirements at subzero temperatures. Welds are uniformly shaped, without constrictions and undercuts. The flux is suitable to be used on DC, positive pole, or AC up to about 1000A.
Damp flux must be redried at 300-350°C
Main constituents:
|
SiO2 + TiO2 |
CaO+MgO |
Al2O3+MnO |
CaF2 |
|
15% |
40% |
20% |
25% |
Basicity according to Boniszewski : Approx. 3.1
All ? Weld metal analysis typical values in % (Wire EH14) :
|
C |
Si |
Mn |
P |
|
0.10 max. |
0.20-0.60 |
1.10-1.70 |
0.030 max. |
Mechanical properties of the deposited weld metal (With EA3 Wire) :
|
Wire |
|
Ultimate Tensile Strength (MPa) |
0.2% Proof Stress (MPa) |
Elongation (%) (L=4D) |
Charpy V-notch Impact strength in joules |
|
Temp |
Joules |
|
EA3 |
As welded |
510-610 |
440 min. |
22-28 |
-30°C |
50-120 |
Current Condition: AC/DC+
Packing : 25.0Kg. flux in polythene lined bags.
