120201c SMAW Fillet Welds on Mild Steel (Q&A)

Question 1

Stringer padding means that the base metal surfaces are to be:
a) welded flush with very thin overlays.
b) built up uniformly using stringer beads.
c) finished with a wide, smooth metal flow.
d) reinforced in worn areas prior to machining.

Answer 1

b) built up uniformly using stringer beads.

Question 2

A root pass is produced when the:
a) first stringer or pass is applied to any project.
b) gravity is taking the weld metal towards the root.
c) electrode has a short arc length and fast travel speed.
d) first penetrating bead is at the root of the joint.

Answer 2

d) first penetrating bead is at the root of the joint.

Question 3

Weave beads are deposited when the electrode is:
a) manipulated with a forward-backward stepping motion.
b) whipped in and out of the puddle with a long arc.
c) moved forward and side to side while welding.
d) progressed slowly in the direction of travel to produce a wide, flat bead.

Answer 3

c) moved forward and side to side while welding.

Question 4

A cover pass is a:
a) thin weave or a series of passes used as the final layer of weld metal.
b) weld used to cover surface defects.
c) weave bead welded with high heat and fast travel speed.
d) bead that penetrates and covers the root pass.

Answer 4

a) thin weave or a series of passes used as the final layer of weld metal.

Question 5

What is the main purpose of pausing on the edges of a weave bead?

Answer 5

To obtain a blend to eliminate undercut at the toes of the weld bead

Question 6

Electrode angle is:
a) determined by the weld size.
b) the amount that the electrode is tipped forehand or backhand.
c) normally one half of the angle of the joint.
d) the variable that determines bead contour.

Answer 6

c) normally one half of the angle of the joint.

Question 7

When the arc length is increased during welding, what happens to these
characteristics?

a) penetration

b) puddle fluidity

Answer 7

a) Penetration decreases.

b) Puddle is more fluid.

Question 8

What are two (2) commonly used methods for striking the arc with SMAW?
a) amperage surge method and long arc method
b) dead short method and manipulative method
c) tapping method and scratch method
d) lift start method and polarity method

Answer 8

c) tapping method and scratch method

Question 9

Where should you strike the arc on a stop/restart?

Answer 9

Start the arc within the weld zone where the arc marks are to be remelted with the weld progression.

Question 10

Excessive current settings for SMAW are indicated by:
a) lack of penetration.
b) excessive spatter.
c) very smooth bead appearance.
d) a high-crowned bead.

Answer 10

b) excessive spatter.

Question 11

A normal arc length is considered equivalent to the:
a) diameter of the core wire of the electrode.
b) diameter of the electrode including the flux coating.
c) length of the electrode.
d) length of weld bead.

Answer 11

a) diameter of the core wire in the electrode

Question 12

What arc length gives the following characteristics?

a) best blend into the edges of a weld bead

b) deepest penetration

c) highest rate of metal deposit

d) widest bead

Answer 12

a) long arc length

b) short arc length

c) short arc length

d) long arc length

Question 13

What is the best method for determining the current setting for an electrode?
a) Follow the directions on the electrode container.
b) Set current according to the manufacturers’ recommendations and then test on a piece of scrap approximately the same thickness as the metal needed for the weld project.
c) Have your supervisor adjust the controls to correspond to the welding procedure.
d) Just listen to the way the electrode bums until it sounds about right.

Answer 13

b) Set current according to the manufacturers’ recommendations and then test on a piece of scrap approximately the same thickness as the metal needed for the weld project.

Question 14

What should you do to maintain a normal arc length with electrodes that have high iron powder coatings?
a) Maintain an arc length equal to twice the core wire diameter.
b) Use the lowest possible current setting.
c) Keep the flux coating in contact with the metal surface.
d) Maintain a 0° electrode inclination.

Answer 14

c) Keep the flux coating in contact with the metal surface

Question 15

When you deliberately shorten the arc length, what are you expecting to achieve?
a) a wider bead with less penetration
b) deeper penetration with decreased puddle fluidity
c) increased puddle fluidity and a slower burn-off rate
d) increased bum-off rate and increased puddle fluidity

Answer 15

b) deeper penetration with decreased puddle fluidity

Question 16

What electrode inclination is recommended for the first pass of a 2F weld on 10 mm (3/8”) material using a 3.2 mm (1/8”) E4310 (E6010) electrode?
a) 5° - 30° forehand
b) 5° - 30° backhand
c) 45° in the direction of travel
d) 45° to the vertical surface of the joint

Answer 16

b) 5° - 30° backhand

Question 17

What type of bead is usually used for the cover pass on a 2F weld on 10 mm (3/8”) material?
a) herringbone weave bead
b) stringer bead
c) modified lazy L bead
d) long dwell crescent bead

Answer 17

b) stringer bead

Question 18

What procedure is recommended to complete a 3F weld using E4310 (E6010) electrodes on 10 mm (3/8”) material?
a) Completely fill the joint with one large pass.
b) Use one root bead followed by a weave fill and a weave cover pass.
c) Use stringer beads on all passes, working from the bottom upwards.
d) Use stringer beads on all passes, working from the top downwards.

Answer 18

b) Use one root bead followed by a weave fill and a weave cover pass.

Question 19

What action would you take to avoid excessive buildup at the centre of the cover pass of a 3F weld?

Answer 19

Travel faster across the centre with a slight increase in arc length.

Question 20

What polarity is recommended for these electrodes?

a) E4310 (E6010)

b) E4914 (E7014)

c) E4918 (E7018)

Answer 20

a) DCEP only

b) AC or DC EN

c) AC or DCEP

Question 21

A quick test for polarity can be done using which electrode?
a) E4310 (E6010)
b) E4914 (E7014)
c) E4918 (E7018)
d) E4928 (E7028)

Answer 21

a) E4310 (E6010)

Question 22

Changing the inclination of the electrode in relation to the direction of travel:
a) affects the depth of penetration.
b) does not affect the weld.
c) causes the weld to build up at the edges.
d) causes the ripples to form unevenly.

Answer 22

a) affect the depth of penetration.

Question 23

The number and letter combinations 3F and 2G, for example, represent:
a) the type of electrode and weld metal analysis required for the project.
b) the joint design and configuration.
c) the required position and type of weld.
d) the required process and joint design.

Answer 23

c) the required position and type of weld.

Question 24

Draw a sketch to show the recommended electrode angle for a butt joint in the flat
position (1G) on 10 mm (3/8”) material when using the SMAW process.

Answer 24

Figure 41 shows the recommended electrode angle.

Question 25

Draw a sketch to show the proper electrode inclination for a butt joint in the flat
position (1G) when using the SMAW process.

Answer 25

Figure 42 shows the recommended electrode inclination.

Question 26

Why is it important to remove the slag between passes on a multi-pass weld?
a) To allow the weld to cool between passes.
b) To make the job last longer.
c) To help prevent slag inclusions between passes.
d) So you can strike and maintain a stable arc when placing the next bead on the weld.

Answer 26

c) To help prevent slag inclusions between passes.

Question 27

How should you position yourself relative to the weld?
a) So that your helmet is within 15 cm (6”) of the weld zone.
b) So that your body is not anchored and you are directly in line with the weld.
c) So that your body is supported and you are able to see the weld zone clearly.
d) So that your body is anchored and your movements are severely restricted.

Answer 27

c) So that your body is supported and you are able to see the weld zone clearly.

Question 28

Which electrode normally requires a manipulative welding technique when doing
stringer beads in the flat position?
a) E4914 (E7014)
b) E4918 (E7018)
c) E4924 (E7024)
d) E4310 (E6010)

Answer 28

d) E4310 (E6010)

Question 29

Which electrode normally uses a drag technique when doing stringer beads?
a) E4310 (E6010)
b) E4914 (E7014)
c) E4910 (E7010)
d) E4911 (E7011)

Answer 29

b) E4914(E7014)

Question 30

A fillet weld placed on the underside of the joint with one vertical leg and one horizontal leg is:
a) a horizontal overhead fillet weld.
b) a horizontal fillet weld with plates set in the vertical plane.
c) a multiple pass fillet weld with plates set in the vertical plane.
d) a single pass fillet weld with plates set in the horizontal plane.

Answer 30

a) a horizontal overhead fillet weld.