Deck 15: Gas Metal Arc and Flux Cored Arc Welding Aws Sense Certification

Question 1

​What is the maximum incomplete fusion that is allowed for a visual inspection?

A) ​1/64 in (0.4 mm)
B) ​1/32 in (0.8 mm)
C) ​3/32 in.(2.4 mm)
D) ​No incomplete fusion allowed

Answer 1

D

Question 2

​What is the approximate width of the root gap that should be set on a beveled joint before tack welding?

A) ​1/64-in (0.4 mm) to 1/32-in (0.8 mm)
B) ​1/16-in (1.6 mm) to 1/8-in (3 mm)
C) ​1/4-in (6 mm) to 5/16-in (8 mm)
D) ​0-in (0 mm)

Answer 2

B

Question 3

​Why are the GMA and FCA welding processes used?

A) ​They both use the same filler metal.
B) ​They can rapidly produce high-quality welds.
C) ​FCA welding is the preferred process because it is better and faster than GMA welding.
D) ​Because once you are certified to make GMA welds, you are automatically certified to make FCA welds too.

Answer 3

B

Question 4

​How can the weld bead be cleaned up?

A) ​hand wire brush
B) ​chipping hammer
C) ​punch and hammer
D) ​All of the above

Question 5

​What GMAW process is used to make the welds on the 10 gauge to 14 gauge thick carbon steel joints?

A) ​GMAW-S
B) ​GMAW-P
C) ​GMAW-G
D) ​GMAW-spray metal arc transfer

Question 6

​What is the maximum width of the weld cover pass?

A) ​3/32-in (2.4 mm)
B) ​1/8-in (3 mm)
C) ​1/4-in (6 mm)
D) ​1/16-in (1.6 mm)

Question 7

​How wide of a band next to a groove face must be cleaned of slag, rust, and mill scale?

A) ​1 in (25 mm)
B) ​½ (13 mm)
C) ​1/8 in (3 mm)
D) ​3/4 in (19 mm)

Question 8

​What is the maximum size of porosity that is allowed for a visual inspection?

A) ​1/64 in (0.4 mm)
B) ​1/32 in (0.8 mm)
C) ​3/32 in.(2.4 mm)
D) ​No porosity allowed

Question 9

​What is the maximum temperature that the base metal can be at while it is being welded?

A) ​50°F (10°C)
B) ​100°F (38°C)
C) ​150°F (65°C)
D) ​350°F (175°C)

Question 10

​What would be an acceptable shielding gas mixture of argon (Ar) and oxygen (O) for GMA welds?

A) ​Ar + 2% O2
B) ​Ar + 1% O2
C) ​Ar + 7% O2
D) ​Ar + 0% O2

Question 11

​What shielding gas(s) are recommended for the FCA welding practices?

A) ​100% Ar
B) ​75% Ar + 25% CO2
C) ​100% CO2
D) ​25% Ar + 75% CO2

Question 12

​What is the maximum crack size that is allowed for a visual inspection?

A) ​1/64 in (0.4 mm)
B) ​1/32 in (0.8 mm)
C) ​3/32 in.(2.4 mm)
D) ​No cracks allowed

Question 13

​Which of the following is not a needed item for all of the practices?

A) ​MIG pliers
B) ​wire cutters
C) ​torch lighter
D) ​wire brush

Question 14

​What should be done with a test plate if it is warped as the result of being flame cut?

A) ​Use a grinder to straighten the beveled edge.
B) ​Use a press to straighten the plate.
C) ​Make a new cut using a power band saw.
D) ​Discard the plate and try again.

Question 15

​Which of the following would not be part of the information that would be included on a qualification test?

A) ​filler metal
B) ​shielding gas
C) ​type of joint
D) ​right or left handed welder

Question 16

​What is the minimum temperature that the joint must be at before welding can begin?

A) ​70°F (21°C)
B) ​60°F (15°C)
C) ​50°F (10°C)
D) ​40°F (4°C)

Question 17

​What is the maximum undercut that is allowed for a visual inspection?

A) ​1/64 in (0.4 mm)
B) ​1/32 in (0.8 mm)
C) ​3/32 in.(2.4 mm)
D) ​No incomplete fusion allowed

Question 18

​How wide should the test strips be for testing the 10 gauge to 14 gauge thick carbon steel butt, lap, and tee joint welds?

A) ​1 in (25 mm)
B) ​1 ½ (37 mm)
C) ​1/8 in (3 mm)
D) ​3 in (74 mm)

Question 19

​What is the approximate size that the root face on a beveled edge should be ground to?

A) ​1/64-in (0.4 mm) to 1/32-in (0.8 mm)
B) ​1/16-in (1.6 mm) to 1/8-in (3 mm)
C) ​1/4-in (6 mm) to 5/16-in (8 mm)
D) ​0-in (0 mm)

Question 20

​What is the maximum frequency of porosity that is allowed for a visual inspection?

A) ​1 per inch (25 mm)
B) ​1 per 2 inches (50 mm)
C) ​1 per 3 inches (75 mm)
D) ​1 per 4 inches (100 mm)

Question 21

​Describe how the weld beads on a test plate should be cleaned.

Question 22

​Explain the acceptance criteria for a bend test.

Question 23

​Explain how to bend test the strips cut from the 10 gauge to 14 gauge carbon steel sheet metal.

Question 24

​What should be watched for as an indication that the root pass is getting 100% penetration?

Question 25

​What cautions should be taken when welding on a pipe joint in a fixed position?