Chapter 14 Welding Procedures and Inspection Flashcards
The major advantage of the SMAW welding method is;
A) SMAW may be set up as a fully automated process
B) Continuous electrode feed allows for a more uniform weld
C) It is low cost and will handle all angles of welding positions
D) Mixed flux added from the flux hopper can reduce oxides and nitrides
C
The major advantage of the GTAW welding method is;
A) It is best suited for joining difficult metals
B) It is a high production welding process
C) The use of Tungsten steel offers a higher stress resistant weld
D) It is the only arc welding process that is capable of welding ferrous and non-ferrous metals
A
The Acronyms MIG and TIG welding is associated to which process?
A) Gas Tungsten Arc Welding (GTAW)
B) Submerged Arc Welding (SAW)
C) Gas Metal Arc Welding (GMAW)
D) Shielded Metal Arc Welding (SMAW)
C
Which welding process would be considered for high disposition, high quality seam that joins flat thick sections of structural steels?
A) Gas Metal Arc Welding (GMAW)
B) Gas Tungsten Arc Welding (GTAW)
C) Shielded Metal Arc Welding (SMAW)
D) Submerged Arc Welding (SAW)
D
The purpose of a post heat treatment for welds is;
A) Stress relieve the weld
B) Reduce the load on the welding process and weld efficiency
C) Minimize expansion and contraction of the metals
D) Warm pipe welds easier
A
Backing rings are primarily used to;
A) Increase the weld strength and over all safety of the weld
B) Steady the two individual pieces for accurate alignment
C) Prevent weld metal from protruding past the inner wall of a pipe
D) Aid with stress relieving the weld joint by increasing the mass conduction of the joined metals
C
The CSA and AWS have specific numbers used to identify welding electrodes. Consider the following number, E4101. The first 3 digits (410) identifies;
A) The tensile strength in MPA
B) Penetration characteristics
C) The welding position
D) Coating type and polarity
A
For pipe sizes with thicknesses 51 mm and larger, it is recommended that the joint be;
A) Preheated
B) Installed with a backing ring
C) Joined using the SAW welding process only
D) Butt welded
D
Excess current settings with the welding unit may result in;
A) Slag Inclusions
B) Overlap
C) Lack of Penetration
D) Undercut
E) Under-fill
D
Lack of weld fusion maybe cause by;
1) Welding pieces not properly aligned
2) Advancing welding rod to quickly
3) Wandering of the welding rod
4) Electrode to far from joint and/or at the wrong angle
5) Insufficient heat
6) Slag infusion
A) 1, 2, 3
B) 3, 4, 5, 6
C) 1, 2, 4
D) 1, 4, 6
E) 2, 4, 5, 6
C
