Piercing Holes in Steel Plate with steel-tubular electrodes

Holes can be easily pierced in steel plate using steel-tubularelectrodes. The following technique is recommended: Touch the plate lightly with the electrode at the desired point. Hold the oxygen triggerdown and call for SWITCH ON. Hold the electrode stationary for a moment, withdrawing it momentarily as necessaryto start an arc and permit melting of the … Read more

Oxygen Arc Cutting

Types Of Electrodes Used For Oxygen Arc Cutting: There are two types of electrodes used for oxygen 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 … Read more

Air Carbon Cutting (AAC)

Air carbon cutting is an arc cutting process in which metals to be cut are melted by the heat of a carbon arc. The molten metal is removed by a blast of air. This is a method for cutting or removing metal by melting it with an electric arc and then blowing away the molten metal … Read more

OxyFuel Cutting with MAPP Gas

Cutting with MAPP gas. (1) Quality cuts with MAPP gas require a proper balance between preheating flame adjustment, oxygen pressure, coupling distance, torch angle, travel speed, plate quality, and tip size. Oxyfuel ratios to control flame condition are given in table 11-4. (2) MAPP gas is similar to acetylene and other fuel gases in that it … Read more

Air Carbon Arc Cutting And Welding

Air carbon arc cutting is an arc cutting process in which metals to be cut are melted by the heat of a carbon arc and the molten metal is removed by a blast of air. The process is widely used for back gouging, preparing joints, and removing defective metal. A high-velocity air jet traveling parallel to … Read more

Plasma Arc Cutting (PAC)

The plasma arc cutting process cuts metal by melting a section of metal with a constricted arc. A high-velocity jet flow of hot ionized gas melts the metal and then removes the molten material to form a kerf. The basic arrangement for a plasma arc cutting torch, similar to the plasma arc welding torch, is shown in figure … Read more