Welding Flashcards
(32 cards)
It is the amount of filler metal deposited in any welding process; rated in pounds per hour.
Deposition Rate
It is a depression at the termination of a weld.
Crater
That portion of a weld which has been melted during welding.
Weld Metal
It is the flow of electric current from the tip of the electrode to the base of the metal being welded.
Arc
It is a single longitudinal progression of a welding operation along a joint or weld deposit.
Pasa
It is a fusible material or gas used to dissolve and/ or prevent the formation of oxides, nitrides, or other undesirable inclusions formed in welding.
Flux
It is an arc welding process wherein metals are
united by heating with an electric arc between a coated metal electrode and the metal.
Shielded metal arc welding (SMAW)
It is a weld made to hold parts in proper alignment until the final welds are made.
Tack weld
It is a term applied to an inward and upward movement of the electrode which
is employed in vertical welding to avoid undercut.
Whipping
It is the metal particles given off during welding which do not form a part of the
weld.
Spatte
TRUE OR FALSE: The coating cannot be formulated to increase or decrease the fluidity of the protective slag.
FALSE
TRUE OR FALSE: Using coated electrodes, it does not stabilize the arc but it directs the globules of molten filler metal from the core of the electrode into the weld pool.
FALSE
TRUE OR FALSE: Using coated electrodes, it provides non-oxidizing gas shield around the arc to keep the oxygen and the nitrogen in the air away from the molten metal.
TRUE
TRUE OR FALSE: Using coated electrodes, it serves as an insulator for the core wire and uses stray arcs occurring.
FALSE
TRUE OR FALSE: Using coated electrodes, it slows down the rate of melting and therefore, decreases the speed of welding.
FALSE
TRUE OR FALSE: Using coated electrodes, it improves the penetration of the weld and therefore ensures a sound joint.
TRUE
TRUE OF FALSE: The coating facilitates the striking of the electric arc and enables it to burn stably, thus making the electrode suitable for use with an alternating current.
TRUE
TRUE OR FALSE: Using coated electrodes, this can be provided a flux for the molten weld pool from which inserts impurities and forms a protective slag which can be readily chipped off when cooled and solidified.
FALSE
TRUE OR FALSE: The coating can be made at the time of manufacture in order to replace any alloying elements in the electric core.
TRUE
Meaning of AWS.
American Welding Society
It is a gas pockets or voids in metal.
Porosity
It is a technique of depositing weld metal in which the electrode is oscillated.
Weaving
Metal rods which conduct a current from the electrode holder to the base
metal.
Electrodes
It is the exposed surface of a weld, made by an arc or gas welding process, on the side from which welding was done.
Face of weld
