Weld Faults Flashcards
Cutting a notch into both ends of a wild and applying force against one and is known as a A)Stress flow test B)Weld fault test C)Weld press test D) Nick break test
D) Nick break test
Notch affect in the world has stress flow lines
A)Concentrated at one point
B)Flowing from left to right
C)Flowing smoothly through the world and joint
D) Stretched beyond the elastic limit
A)Concentrated at one point
Tapered transition ratio of 3 to 1 when joining plates of different thicknesses would A)Waste time and energy B)Decrease notch affect C)Decrease cross-section strength D) Create a point of high stress
B)Decrease notch affect
A high concentration of stress in a weld causes A) Stress flow B )Hi strength C) Notch effect D) Nick break
C) Notch effect
An insufficient route opening on a groove weld is likely to cause A)Lack of penetration B)Excessive penetration C)Complete fusion D) Stray arc strike
A)Lack of penetration
Which of the following variables would be effective and controlling excessive penetration on a groove weld
A)Reduce the land thickness
B)Increase the bevel angle
C)Decrease the root opening
D) Preset the plates to widen the groove opening
C)Decrease the root opening
Porosity in a world can be reduced by
A)Cleaning the joint area before welding
B)Welding with string or beads instead of a weave bead
C)Maintaining a fast travel speed with the electrodes
D) Avoiding the use of low hydrogen electrodes
A)Cleaning the joint area before welding
Undercut is most commonly caused by A)Current setting to low B)Travel speak too fast C)Using high iron powder electrodes D) Incorrect electrode angle
D) Incorrect electrode angle
Distortion can be controlled by A) Making several passes using small electrodes at low current settings B) Using a low arc length C) Using low hydrogen electrodes D) Maintaining an accurate joint fit up
D) Maintaining an accurate joint fit up
Which of the following can cause a quenched and brittle condition in metal? A)Astray arc strike B)Welding current set to low C)Inadequately filled crater D) Using a damp electrode
A)Astray arc strike
Which situation would most likely produce slag inclusions in multipass welds?
A) High current settings with a short arc length
B) High current setting with a normal are clean
C) Low current setting with a long arc length
D) Removing the slide between passes
C) Low current setting with a long arc length
Longitudinal cracks in the world can be caused by A)Excessive travel speed B)Excessive joint restraint C)Arc length too long D) Incorrect electrode inclination
B)Excessive joint restraint
Incomplete penetration would likely be caused by
A)Travel speak to slow
B)The root opening to narrow
C)Electro diameter too small
D) Welding with excessively high current settings
B)The root opening to narrow
