DESCRIPTION
VHF-950 obtain a weld metal which contains large quantity of dispersed tungsten carbide and withstands heavy soil impact-free abrasion. Machining as-welded condition is impossible.
APPLICATIONS
Hard surfacing of shovel teeth, cutter knives of dredger and speed mullers, etc.
INSTRUCTIONS FOR WELDING
1.) Usually over 200ºC preheating and 500~600ºC postheating are required.
2.) Take care of the increase of cracking tendency when used for over triplelayer welding.
3.) Underlaying with low hydrogen type electrodes (N-7016 or N-7018) is required.
4.) Dry the electrodes at 150~200ºC for 30~60 minutes before use.
TYPICAL ANALYSIS OF ALL WELD DEPOSIT:
C |
Si |
Mn |
Cr |
Mo |
W |
|
|
|
2.78 |
0.29 |
3.22 |
0.10 |
0.12 |
47.3 |
|
|
|
HARDNESS: 60-69 HRC (700-950 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. |
