Postweld heat treatment, often called _____ relieving, consists of uniformly heating the welded parts to a temperature sufficient to relieve most of the stresses created by the welding process.
Respuesta
crack
inclusion
stress
check
Pregunta 3
Pregunta
______________ are solid non-metallic inclusions entrapped below the surface in the weld metal or more often, between deposited weld metal and the base metal.
Respuesta
porosity
slag inclusions
cracks
checks
Pregunta 4
Pregunta
______ is an excess of deposit metal, which is not fused to the base metal
Respuesta
fusion
undercut
overlap
underfill
Pregunta 5
Pregunta
According to the AWS classification system for low carbon steel electrodes, and using E7018 as the example. What does the 1 signify
Respuesta
welding position
tensile strength
electrode coating, current and polarity
metal thickness
Pregunta 6
Pregunta
To ensure the electrodes function as designed, they must be kept in baking ovens to remove any ________ content
Respuesta
hydrogen
moisture
carbon
inert
Pregunta 7
Pregunta
_________ is insufficient weld deposit, resulting in a reduction in the thickness of the groove
Respuesta
Fusion
Undercut
Overlap
Underfill
Pregunta 8
Pregunta
To qualify a welding procedure the _____ must specify a detailed written description of the procedure.
Respuesta
welder
manufacturer
owner
operator
Pregunta 9
Pregunta
Magnetic particle testing (MT) is an _____ technique for detecting flaws that are either surface, or subsurface.