Deck 14: Flux Cored Arc Welding

Question 1

Some welders have to make welds in very restricted spaces using a mirror.

Answer 1

True

Question 2

The higher the wire feed speed, the higher the welding current.

Answer 2

True

Question 3

Lap joints are commonly used to join structural shapes such as a(n) ____.

A) angle iron
B) ship's frame
C) channel iron
D) channel frame

Answer 3

A

Question 4

Horizontal butt welds are more difficult to perform than most other welds.

Question 5

The upside to higher welding speeds is that FCA welding is highly productive and very cost-effective.

Question 6

____ is the type of rusting that occurs when water seeps between two tightly fitting surfaces.

A) Erosion corrosion
B) Pitting corrosion
C) Crevice corrosion
D) Galvanic corrosion

Question 7

When FCA is used, welds may stop in a corner.

Question 8

With FCA welding, the voltage is set on the welder, and the amperage is set by changing the ____.

A) cutting speed
B) welding speed
C) wire feed speed
D) drill speed

Question 9

Using the wrong electrode extension for a specific electrode can result in very poor welding with slag inclusions, porosity, and a lack of ____.

A) homogeneity
B) consistency
C) fusion
D) uniformity

Question 10

The length of electrode extension affects the preheating of the electrode.

Question 11

There are two commonly used shorter timed tests to reduce the wasting of electrode. One uses 15 seconds, and the second test uses ____.

A) 4 seconds
B) 6 seconds
C) 8 seconds
D) 10 seconds

Question 12

Setting up the arc voltage and amperage for FCA welding is different from setting it up for GMA welding.

Question 13

Overhead welds are more difficult to make than vertical welds.

Question 14

The tee joint is often used to join structural shapes such as an angle iron to itself at a ____ angle.

A) 60°
B) 90°
C) 120°
D) 150°

Question 15

____ are used to make a weld through the surface of a plate to a plate located directly behind the top plate.

A) Edge welds
B) Plug welds
C) Tack welds
D) Butt welds

Question 16

The wire speed control dial can be advanced or slowed to control the burn weld size and ____.

A) flow rate
B) cooling rate
C) travel rate
D) deposition rate

Question 17

The ____ can be used to join thinner plate sections to make a thicker section.

A) edge welds
B) plug welds
C) tack welds
D) butt welds

Question 18

The effect of having too high or too low an arc voltage is the same of having too high or too low a wire feed speed.

Question 19

One of the major factors that affect FCA welding is that the welding wire is being fed out at a low speed.

Question 20

Some types of FCA welding electrodes need ____ electrode preheating.

A) very high
B) no
C) very low
D) more

Question 21

A gas welding rod tip can be flattened into a(n) ____________________ shape as a spacer to adjust the root opening.

Question 22

The electrode extension is referred to as ____________________.

Question 23

The wire feed can be measured by how fast the wire exits the ____________________.

Question 24

The movement or weaving of the welding electrode can control the following characteristics of the weld bead: buildup, width, undercut, and ____________________.

Question 25

You can find out what the kerf width is for a torch by making a sample cut in scrap metal and measuring its ____________________.