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 →Piercing Holes in Steel Plate with steel-tubular electrodes. Holes can be easily pierced in steel plate using steel-tubular electrodes. The following technique is recommended: Touch the plate lightly with the electrode at the desired point. Hold the oxygen trigger down and call for SWITCH ON. Hold the electrode stationary for a moment, withdrawing it momentarily as necessary to start an
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
Read more →Steel-Tubular Electrode Cutting Technique : Thick plate When cutting steel plate that is 1/4-inch thick or greater with Steel-Tubular electrodes, use the drag technique and proceed as follows: Insert the electrode into the collet opening until it bottoms out against the washer. Tighten the collet nut. To start the cut, hold the electrode perpendicular to the surfaceto be cut and
Read more →Oxygen arc cutting Steel-Tubular Electrodes The oxygen arc cutting steel-tubular electrode consists of a steel tube with a waterproofed flux coating which is applied during the manufacturing process. The electrode is 14 inches long with a 5/16-inch outer diameter and a bore diameter of slightly less than 1/8 inch. The waterproof flux coating is similar in composition to the coating
Read more →Oxygen Arc Cutting There are two types of electrodes used for oxygen arc (oxy-arc) cutting Steel-tubular (manufactured by Arcair) and the exothermic types (Arcair’s Sea-Jet and BROCO’s Ultrathermic). These electrodes provide excellent cutting results and can be used with a constant current DC welding generator set on straight polarity (electrode negative) supplying current to the electrode. With the work grounded,
Read more →