Chapter 18 GMAW and FCAW

Question 1

Most welding qualification tests are performed on ___________________ weld joints

Answer 1

out-of-position

Question 2

FCAW can be done out of position, but not all FCAW electrodes are designed to be used _______________________

Answer 2

in all positions

Question 3

Electrodes with a 0 in the strength position (for ex E70T-1M) can be used for which position?

Answer 3

flat and horizontal fillet positions

Question 4

What travel angle is used to make a horizontal fillet weld with GMAW?

Answer 4

20-25 degree drag travel angle

Question 5

The first bead in a layer is always _______ and the weld beads are completed from the bottom to the top

Answer 5

on the bottom

Question 6

Which defect is more frequent on a horizontal butt weld than a flat butt weld?

Answer 6

underfill

Question 7

What is underfill?

Answer 7

is a condition in which the molten metal sags downwards and does not fill the top part of the weld joint.

Question 8

The ___________ method is used to make a vertical filler weld uphill

Answer 8

forehand

Question 9

The forehand welding method is used when welding __________

Answer 9

uphill

Question 10

The backhand method is used when welding _______

Answer 10

downhill

Question 11

Which weave patter is often used on fill passes on vertical fillet welds

Answer 11

z-weave

Question 12

What is overlap

Answer 12

a condition in which the metal sags downward and overlaps or lays on the lower piece without melting the lower piece.

Question 13

A c-shaped weld pool is used when making a fillet weld. What does this indicate?

Answer 13

both surfaces are melting

Question 14

Voltage and wire feed speeds for overhead welding are set to the ________ of the recommended range.

Answer 14

lower end

Question 15

What does AWS stand for?

Answer 15

American Welding Society

Question 16

What does CSA stand for?

Answer 16

Canadian Standards Association

Question 17

What is cast?

Answer 17

The diameter of a circle formed by one loop or a maximum of 3m (10’) or electrode wire when cut from a package and laid unrestrained on a flat surface.

Question 18

What is helix?

Answer 18

A cork screw effect exhibited by a ring of electrode filler wire when placed on a flat surface without restraint. If both ends of the wire lie flat there is no helix. If one end is raised then the distance off the surface is the helix.