Exam 4 Flashcards
(92 cards)
What does the ‘U’ in the TC-U9a joint design mean?
Metal thickness, U = unlimited
In the ‘Structural Welding Code - Steel’, which processes are prequalified?
GMAW, FCAW, SMAW, and SAW
Of the following, which is NOT a prequalified process? A: FCAW B: GMAW-S C: SAW D: SMAW
B: GMAW-S
Under AWS D1.1, of the following processes, which is NOT deemed as prequalified?
A: flux-cored arc
B: shielded metal arc
C: short-circuiting transfer gas metal arc
D: spray transfer gas metal arc
C: Short-circuiting transfer gas metal arc
Under AWS D1.1, is it possible for a WPS using GMAW-S to be qualified?
Yes, if the WPSs conform with the requirements of Clause 6.
Of the following processes, which are code approved? A: EGW B: ESW C: GTAW D: All of the above
D: All of the above
If AWS D1.1 code conformance is required would OFW-A be used for welding?
Yes, if the procedure was qualified per Clause 6.
Under AWS D1.1, how could a new welding process be used for welding?
It could be used by qualification of the WPSs under Clause 6.
All FCAW and GMAW prequalified WPSs are required to use _____ as a power supply.
CV (Constant Voltage)
Which standards must most base metals used in fabrication conform with?
ASTM and API Standards
High carbon steel is best welded with which kind of SMAW electrode?
Low Hydrogen
Where are specifications for base metal found?
ASTM (American Society for Testing and Materials)
An ER70S-X electrode would be used for which process?
GMAW
Which process would use continuous solid wire electrodes (E70S-X) for use in semi-automatic welding?
GMAW
An E70T-X electrode would be used in which welding process?
FCAW
The specification for a suitable FCAW filler material when joining ASTM A516 Gr. 55 is:
AWS A5.36
If a steel plate is 1-3/4” thick, what is the most common temperature needed to be preheated to before welding?
225 degrees F
The minimum preheat temperature for 1-1/4” thick A572 steel, Grade 60 is
150 degrees F
The minimum temperature for GMAW welding 2-1/2” thick A572 Grade 60 material is:
225 degrees F
The preheat and interpass temperature for ASTM A992 over 2-1/2”, using FCAW process should never be more than:
300 degrees F
The minimum preheat temperature for using an E7018 electrode to weld 1 inch thick ASTM A36 plate is:
150 degrees F
For ASTM A572 steel, Grade 42, the minimum required preheat for welding 2-1/2” thick steel with a prequalified procedure using the GMAW process is:
150 degrees F
What is the minimum temperature required on adjacent base material for ASTM A537, 1-3/4” thick when SMAW with low-hydrogen electrodes.
150 degrees F
What is the minimum preheat and interpass temperature for SMAW welding ASTM A572, Grade 60 structural steel 2” thick
225 degrees F