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The use of shielding gases when using wire feed processes increases the need for good?
Ventilation
High ultraviolet radiation emissions from an open arc can cause atmospheric oxygen in the vicinity of the arc to convert to??
Ozone
Define and describe gmaw(mig) welding process
GMAW is an arc welding process that uses an arc between a CONTINOUS FILLER METAL ELECTRODE AND WELD POOL. THE process uses shielding gas from an externally supplied source
GMAW (Mig) is recommended for use on which metals ?? There are 4
-stainless steel
-aluminum
-copper alloys
-carbon and low allow steels
What are the operation principles of FCAW (fluxcored)
FCAW uses an arc established between continously fed consumable electrode and the work piece. Appropriate settings made by the operator to maintain constant burn-off Rate of the wire electrode . Depending upon the power source and wire drive system used. Arc length is maintained automatically. SHIELDING GAS CAN BE EXTERNALLY APPLIED AND/OR OBTAINED FROM A FLUX contained within the hollow electrode core ( depending kn the type of Flux cored wire used)
Self shielded FCAW uses shielding gas generated from the ?
Flux
What is the electrode extension (stick out ) range for self shielded FCAW
3/4"(19mm) ------- 3-3/4"(95mm)
What are the 6 basic equipment components always required for the set-up of a wire feed outfit
-power source
-wire feeder
-gun cable assembly
-spooled filler wire
-shielding gas
-gas control equipment
How are wire feed guns rated?
By current - carrying capacity
The major factor in choosing between an air-cooled or water cooled gin is the ?
Required current/voltage
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