Application field

The low-hydrogen hardfacing electrode VHF-NIDURIT 65 performs exceptionally well under extreme abrasive and sliding wear at operating temperatures up to 930ºF(500ºC).  In conjunction with other high-grade alloying constituents, niobium carbide gives much better wear resistance than pure chromium carbide base electrodes, with the same hardness.  VHF-NIDURIT 65 is employed on machine components like screw conveyors, impact breaker strips, slag crushers, sand blasting plants, mixers, kneaders etc. as well as one processing plants working at high temperatures.

Welding properties

VHF-NIDURIT 65 welds well in horizontal and slightly upward positions.  Recovery is 200%

Mechanical properties of the weld metal

High temperature resistant up to 930ºF(500ºC)

Welding Instructions

Guide the electrode steeply with medium-long arc.  Excessive mixing with the parent metal is avoided by low amperage.  If crack-free deposition metal is required or the weld metal is exposed to severe impacts, an austenitic interpass (e.g. VHF-CROMANG) is recommended.  However full hardness is then attained only in the second or third pass.

TYPICAL ANALYSIS OF ALL WELD DEPOSIT:

HARDNESS:

AS WELDED: 64-67 HRC (800-900 Hv)

RECCOMENDED CURRENTS: Ampere (AC/DC+)

WELDING POSITIONS:

FLAT, FILLET, VERTICAL UP, 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