Arc Welding Equipment 6831 26 Welding Machines AC

Arc Welding Equipment 6831. 26

Welding Machines • AC – (alternating current) used for most agricultural arc welding jobs and has low purchase cost compared to other arc welders

Welding Machines • DC (direct current) are generator operated and can be used where regular electrical power is not available

Welding Machines • AC/DC – welders use a rectifier to change regular AC current to DC • These welders can be used as either AC or DC

Welding Machines • TIG (tungsten inert gas) welders have an electric power unit, a pressure reducing regulator, electrode holder, tungsten electrode, nozzle, cables and hoses, and a gas supply unit

TIG • The two gases used are helium and argon

TIG • The tungsten electrode is not consumed (burned) and there is no slag on the bead

TIG • TIG is good for welding stainless steel and aluminum because it is stronger and more free of corrosion than other welders

Welding Machines • MIG (metallic inert gas) welders are wire feed welders that use a consumable wire fed automatically through the torch and can be used in industries as an automatic welder

Welding Equipment • Helmet, leather gloves, leather aprons, leather welding jacket, and leather boots are for protection

Welding Equipment • Chipping hammer removes slag, and wire brush removes rust and dirt

Welding Equipment • Clamps and vise grip clamps are used to hold metal in place for welding

Electrodes • Electrodes are wire cores or rods usually covered in flux

Electrodes • Size is the diameter of the metal rod not including flux

Electrodes • Classification code system has a letter and four numbers such as E 6011 or E 6013

Electrodes • E 6011 is the most commonly used electrode for welding farm projects because it can be used for all purpose welding of mild steel, has deep penetration, and can be used with both AC and DC welders

Electrodes • E 6013 is a good general purpose electrode but only has medium penetration

Arc Welder • An electric arc welder is used to weld two pieces of metal by melting and joining the edges of each using an electrode to help fill the space between them

TIG Welder • TIG welders are best for welding aluminum and stainless steel

MIG Welder • MIG welders are the best welder for welding very thin metals

Shade 10 • A shade 10 lens in a welding helmet protects the eyes of the person welding or the person watching someone weld

Chipping Hammer • A chipping hammer is used to remove the slag (crust) off a welded bead

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