APPLICATION

Surfacing of Mixer blades, Screws of refractory material presses, brick presses, cement presses, conveyor screws.

CHARACTERISTICS

VHF-43 is a low hydrogen electrode for surfacing of parts subject to very intense abrasion with shock, capable of producing high deposition efficiencies (typically 190%), a fine regular bead and minimal, easily removed slag.

Deposit an all metal weld structure of very hard, abrasion resistant chromium and niobium carbides in a moderately tough austenic matrix; ideal for hard surfacing applications where resistance to extreme abrasion and moderate impact are required.  The deposit is non-machineable, grindable, non-heat treatable and prone to relief checking.

INSTRUCTIONS FOR WELDING

1.)   Preheat at 300ºC and over in general.  Use NIHONWELD temperature indicating sticks or NIHONWELD interpass temperature gauge to determine if proper temperature is achieve before welding.  For more details see NIHONWELD Chart 4 Easy Steps for welding. 

2.)   It is effective to postheat at 600ºC and to slow cool after welding to prevent cracking.   

3.)   Dry the electrodes at 150-200ºC for 30 – 60 minutes before use.  Use NIHONWELD portable drying ovens.

TYPICAL ANALYSIS OF ALL WELD DEPOSIT:

HARDNESS:

AS WELDED: 60-65 HRC (single layer) 64-69 HRC (multi-layered)

RECCOMENDED CURRENTS: Ampere (AC/DC+)

WELDING POSITIONS:

FLAT, 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.