99% Nickel cast Iron electrode
Specially developed for all cold welding of cast iron, the ISOARC 210 is ideal for positional work. Extra-low heat input, high strength and fully machinable deposits result from using this electrode, extremely pure, the 210 is a low hydrogen electrode with graphite.
ISOARC 210 can be used to cold-weld cast iron to steels, brass, bronze, thin and medium thick sections. Applications include: motor blocks, machine bases, motor and gear housing, cams, bearing blocks, transmission cases and machinery parts.
Superior bonding is possible on heavy sections by local preheating to a maximum of 100 degrees. Use a short to medium arc at the lowest amperage possible. Peen lightly to relieve stresses. Skip weld, and back-step to avoid heat and stress accumulation. Before welding the repair area must be machined or ground clean. If ground, remove carborundum particles with an oxidizing flame, searing the area to be welded. Depending on wall thickness, a U or double U welding preparation must be made. Use a short arc and keep the electrode at a steep angle. Remove slag and peen lightly. Always restrike on the weld deposit and never on the parent metal as this induces thermal shock.