Steel-Tubular Electrode Cutting Technique (cast iron and non-ferrous metals). Cast iron and non-ferrous metals do not oxidize; therefore, underwater cutting essentially becomes a melting process. There is no chemical reaction of the oxygen and the base metal. Therefore, the only benefit realized by the oxygen is the mechanical effect of blowing the molten metal away. Since the melting process takes
Read more →Exothermic Cutting Technique (Concrete, Rock and other Non-Conductive Materials). When cutting non-conductive materials, a striker plate attached to the ground cable is necessary to strike an arc. The striker plate is placed next to the material to be cut. Call for SWITCH ON, squeeze the trigger slightly, drag the electrode across the striker plate and the electrode will ignite. Once
Read more →Steel-Tubular Electrode Cutting Technique : Thin plate. When cutting steel plate which is 1/4-inch thick or less with Steel-Tubular electrodes, use the following technique. This technique is slightly different from that used on thick plate. Instead of maintaining the electrode tip in the cut and pressing against the lip of the advancing cut, the tip should barely touch the plate
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