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Welding
Welding part 2
18
Other
11th Grade
10/28/2013

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Term
coalescence
Definition
the growing together or growth into  one body of the materials being welded
Term
defect
Definition
a discontinuity that is unable tomeet minimum acceptance standards or specs
Term
discontinuity
Definition
an interruuption of the typical structure of a material.  A discontinuity is NOT necessarily a defect.
Term

drag

(thermal cutting)

Definition
The offset distance between the actual and straight line exit points of the gas stream or cutting beam measured on the exit surface of the base material.
Term
dross
Definition
a mass of solid impurities floating on a molten metal
Term

eddy current inspection 

(et)

Definition
uses electromagnetic induction to detect flaws in conductive materials
Term
fusion welding
Definition
any welding process or method that uses fusion to complete the weld
Term
gouging
Definition
removal of metal by the Air Carbon Arc or the Plasma Arc processes
Term
kerf
Definition
the width of a saw, oxyfuel or plasma cut
Term
slag
Definition
a non-metallic product resulting from the mutual dissolution of flex and non-metallic impurities in some welding and brazing processes
Term
tolerances
Definition
the allowable deviation in accuracy or precision between the measurement specified and the part as laid out or produced
Term
bird-nesting
Definition
a condition where GMAW or FCAW filler wire becomes tangled in the wire feeding unit
Term
contact tube
Definition
a device that transfers current to a continuous electrode
Term
electrode extension
Definition
the length of unmelted electrode extending beyond the end of the contact tube during welding
Term
feed rollers
Definition
a set of two or four individual rollers which, when pressed tightly against the filler wire and powered up, feed the wire through the conduit liner to the gun for GMAW and FCAW welding
Term
globular transfer
Definition
the transfer of molten metal in large drops from a consumable electrode across the arc
Term
root face
Definition
the portion of the groove face adjacent to the root of the joint
Term
spray transfer
Definition
metal transfer in which molten metal from a consumable electrode is propelled axially across the arc in small droplets
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