Welding Terms and Acronyms
Welding Terms and Acronyms
OAW – Oxyacetylene Welding
SMAW – Shielded Metal Arc Welding aka Stick Welding
TMAW – Tungsten Metal Arc Welding aka TIG (Tungsten Inert Gas) or Heliarc®
GMAW TERMS
GMAW – Gas Metal Arc Welding, aka MIG (Metal Inert Gas) or Wire Feed Welding
FCAW – Flux Cored Arc Welding
AWS – American Welding Society
cfh – Cubic Feet per Hour (when setting the flowmeter for GMAW and TMAW, you need a minimum of 20cfh)
psi – Pounds per Square Inch
IPM – Inches Per Minute (for setting the wire speed on a GMAW welder)
Arc Force – The pressure of the welding process
Arc Gap – The distance between the tip of the electrode and the metal being welded
Penetration – The depth of the weld into the base metal
Porosity – Impurities trapped within the weld, usually caused by not enough shielding gas or dirty base metal.
Stickout – How far the wire “sticks-out” out past the contact tip. Usually no more than 3/8 an inch for GMAW, and 1-1/2 inch for FCAW.
Travel Speed – The rate in which you weld.
Travel Angle – 5 to 15 degrees
Gun Angle – Perpendicular (90°) for a flat weld joint, or half the angle (45° for T-Fillet, etc.)
Shielding Gasses – Commonly used for GMAW is 75% Argon mixed with 25% C02, or 100% CO2. For TMAW 100% Ar is used. For Dual Shield FCAW, either a 75/25 mix or 100% CO2 is used.
Dual Shield – A welding process that uses Flux Cored wire as well as shielding gas.
Forehand – Pushing your welding puddle, giving a shallower penetrating weld.
Backhand – Pulling your welding puddle, giving a deeper penetrating weld.
Inert – A group of gasses that are non-reactive to other elements. These include Helium and Argon (Ar is really a Noble gas).
Duty Cycle – The percentage of welding time that can be done in relation to the percentage of time the welder must rest. A 60% duty cycle welder can weld for 6 minutes, but then it must rest for 4 minutes.
Be able to identify GMAW Welding Parts, Equipment, and Accessories
Contact Tip
Nozzle
Diffuser
Insulator
Liner
Gun
Flowmeter
Cylinder
Drive Wheels
Knurled Drive Wheels
Hub Tension Nut
Wire Spool
Wire Spool Retainer
Anti Spatter Spray
Nozzle Dip
Drive Wheel Tension Knob
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