DESCRIPTION
The deposited metal of VHF-700 is martensitic structure which contains C, Cr and Mo. It has high hardness, so it is suitable for intense soil abrasion. The deposited metal is not machinable as welded condition.
APPLICATIONS
Hard surfacing of pump casings, cutter knives and pump impellers, etc.
INSTRUCTIONS FOR WELDING
1.) Preheat at 150ºC and over in general.
2.) It is recommended to underlay with low hydrogen type electrode (N-7016 or N-7018), in case the base metal is very hardenable or multi-layer welding is required.
3.) Postheat at 500~600ºC and slow cooling are recommended.
4.) Dry the electrodes at 200~250ºC for 30~60 minutes before use.
TYPICAL ANALYSIS OF ALL WELD DEPOSIT:
C |
Si |
Mn |
Cr |
Mo |
Others |
|
|
|
0.66 |
1.26 |
0.81 |
5.53 |
0.51 |
- |
|
|
|
HARDNESS: 55-61 HRC (600-720 Hv)
RECCOMENDED CURRENTS: Ampere (AC/DC+)
Size |
Dia |
3.2 |
4.0 |
5.0 |
(mm) |
Length |
350 |
350 |
350 |
Current Range |
90-130 |
120-180 |
170-230 |
WELDING POSITIONS:
FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD
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. |
