- Applications
- WT-81M is designed for welding of 590MPa high tensile steel with slow freezing slag system.
Typical applications include machineries, shipbuilding, offshore structures, bridges and general fabrications.
- Characteristics on Usage
-
- - WT-81M is a rutile type of flux cored wire for all-position welding.
- - It provides smooth arc, low spatter levels, good weldability and good bead appearance.
- Notes on Usage
-
- - Proper preheating(50~150°C) and interpass temperature must be used in order to release diffusible hydrogen which may cause cracking in weld metal when electrodes are used for medium and heavy plates.
- - One-side welding defects such as hot cracking may occur with wrong welding parameter such as high welding speed.
- - Gas flow rate is proper 20~25ℓ/min.
- - Shielding gas should be used Ar+20~25% CO2.
- Sizes Available and Recommended Currents ( DC +)
-
용착금속의 기계적 성질의 일례
Dia(mmØ) |
1.2 |
1.4 |
1.6 |
Position |
F |
Amp |
180~340A |
200~360A |
200~420A |
HF |
180~340A |
200~360A |
200~420A |
V-up, OH |
140~220A |
140~260A |
160~280A |
- Typical Chemical Composition of All-Weld-Metal (wt%) (Shielding gas : MIX)
-
용착금속의 기계적 성질의 일례
C |
Mn |
Si |
P |
S |
Ni |
Mo |
0.03 |
1.39 |
0.45 |
0.006 |
0.001 |
0.94 |
0.003 |
- Typical Mechanical Properties of All-Weld-Metal ( Shielding gas : MIX)
-
용착금속의 기계적 성질의 일례
Y.S MPa |
T.S MPa |
EL(%) |
CVN-Impact Value J (-30℃) |
587 |
633 |
30 |
130 |
- Welding position
- Approved by
- KS, JIS