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CWB WELDING INSPECTOR LEVEL 3
EXAM NEWEST 2024-2025 ACTUAL EXAM
COMPLETE 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+ ||BRAND
NEW VERSION!!
CWB WELDING INSPECTOR LEVEL 3
How is seamless extruded tubes made by? - CORRECT ANSWER-Die and mandrel technique
What are the 5 categories of Al products? - CORRECT ANSWER-1. Plate
- Sheet and coil
- Rod, bar, and wire
- Pipe and tubing
- Extruded shapes
What are the two groups of Al alloys? - CORRECT ANSWER - Wrought and casting alloys
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How is Al alloys designated? - CORRECT ANSWER -by Aluminum Assiciation's (AA) alloy and temper designation systems are used
What happens when an Al alloy is pounded with hammer? - CORRECT ANSWER -Its strength increases (Work hardening or strain hardening)
What happens when an Al alloy is heated up and then rapidly cooled ? - CORRECT ANSWER -Its strength increases (Heat treating)
How are strengthening mechanisms divide Wrought Al Alloys?
- CORRECT ANSWER -1. Non-heat treatable / work hardening
alloys ( 1XXX, 3XXX, 4XXX and 5XXX alloy series)
- Heat treatable alloys (2XXX, 6XXX, 7XXX)
What is the major alloying element of AA 1XXX alloy series? - CORRECT ANSWER -99.00 % Al and greater (Pure aluminum series)
What is the major alloying element of AA 2XXX alloy series? - CORRECT ANSWER -Copper 2 / 4
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What is the major alloying element of AA 3XXX alloy series? - CORRECT ANSWER -Manganese
What is the major alloying element of AA 4XXX alloy series? - CORRECT ANSWER -Silicon
What is the major alloying element of AA 5XXX alloy series? - CORRECT ANSWER -Magnesium
What is the major alloying element of AA 6XXX alloy series? - CORRECT ANSWER -Magnesium and Silicon
What is the major alloying element of AA 7XXX alloy series? - CORRECT ANSWER -Zinc
What are the key characteristics of 1XXX series ? - CORRECT ANSWER-Excellent electrical conductivity and corrosion resistance
True / False ?
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In the work-hardened state, alloy AA-1350 is excellent for overhead Al overhead electrical cables - CORRECT ANSWER - True
What are the characteristics of 2XXX series Al? - CORRECT ANSWER-1. Heat treatable
- Contains copper that imparts very high strength and
machinability to the alloys, though with some loss of corrosion resistance
What is the principle alloying addition for 3XXX series? - CORRECT ANSWER -Manganese .. it imparts greater strength to Al while maintaining excellent ductility or foamability
What is the application for AA3304 and AA3014 ? - CORRECT ANSWER-Best used for beverage cans
Where is AA 4XXX series used for ? - CORRECT ANSWER - For welding and brazing filler alloys
What is the principle alloying addition for 4XXX series? - CORRECT ANSWER -Silicon, lowers the melting point of the alloys making them suitable for brazing
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