Low-hydrogen electrode for high-temperature resistant surfacings on hot work steels exposed to impact, compression and abrasion.
Application field
On account of its high tensile strength, toughness and high-temperature resistance, VHF-73G2 is employed for surfacing on machine components and tools exposed to impact, compression and abrasion at operating temperatures up to 1020ºF(550ºC) such as cutting edges for cold and hot shear blades, guillotine shears, dies, swages, hammers etc.
VHF-73G3 is also used to good advantages for the economic manufacture of cold and hot working tools. In such cases the carrier steel must have a tensile strength of more than (144,000 psi) (1000N/mm2)
Welding properties
The electrode welds in the horizontal or slightly rising positions. The weld pool is easy to control and the slag is easily removed.
Welding instructions
Preheat the workpiece to 480 - 570ºF (250 - 300ºC). Guide the electrode as vertically as possible, with medium-long arc. Let the workpiece cool slowly under asbestos. Finish by grinding.
TYPICAL ANALYSIS OF ALL WELD DEPOSIT:
C |
Si |
Mn |
Cr |
Mo |
Others |
|
|
|
0.32 |
0.53 |
0.63 |
5.1 |
4.10 |
- |
|
|
|
HARDNESS:
ALL WELD: 45-50 HRC (275-330 Hv)
High Temperature resistance upto 1020 deg F or 440 deg C
RECCOMENDED CURRENTS: Ampere (AC/DC+)
Size |
Dia |
3.2 |
4.0 |
5.0 |
(mm) |
Length |
350 |
350 |
350 |
Current Range |
80-110 |
100-140 |
130-170 |
WELDING POSITIONS:
FLAT, FILLET, VERTICAL UP
EXPORT Packing: 5Kg plastic container, then 4 5kg containers in master carton box
LOCAL Packing: 5Kg paper box in shrink wrapped plastic
Other special packaging can be accommodated as per request. |
