A 70% Nickel - 30% Copper Electrode For Fully Machinable Crack-Resisting Welds On All Grades Of Cast Iron
NC-70
CLASSIFICATION
AWS A5.15 ENiCu-B | EN ISO 1071 EC NiCu-B | JIS Z 3252 DFC NiCu
PRODUCT DESCRIPTION
The design emphasis of the chemically basic flux assures the metallurgical integrity of the weld metal. The high graphite content of the flux is expelled from the molten metal, compensating for the compression welding stresses thus preventing weld metal cracking. The core wire is pure nickel.
WELDING FEATURES OF THE ELECTRODE
The arc is stable both AC and DC, but is very soft, thus minimising dilution. Weld beads are smooth, bright and evenly rippled. The slag is fairly fluid but relatively quick freezing, thus allowing smooth blends when edges are involved. The slag is readily controllable, thus making positional welding very easy, plus the slag is easily detachable.
APPLICATIONS AND MATERIALS TO BE WELDED
Successful welding of cast irons is dependant on low strength weld metal and controlled heat input welding procedures. Both characteristics are assured by the use of NIK-100. NIK-100 may be used for all standard grades of grey cast iron and malleable cast irons. Typical applications include repairs to engine blocks and heads, gear housings, machine bases, as well as repairs to used castings. Is also used to rectify casting defects on new castings.
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 120oC for 1 hour
