Mig

Question 0

Flat
Lap
Work angle

Answer 0

45

Question 1

Flat
Butt
Work angle

Answer 1

90

Question 2

Flat
T
Work angle

Answer 2

1-45
2-55
3-35

Question 3

Horizontal
Butt
Work angle

Answer 3

80-85

Question 4

Horizontal
Lap
Work angle

Answer 4

45

Question 5

Horizontal
T
Work angle

Answer 5

1-45
2-55
3-35

Question 6

Vertical down
Butt
Work angle

Answer 6

90

Question 7

Vertical down
Lap/t
Work angle

Answer 7

45

Question 8

Vertical up
Butt
Work angle

Answer 8

90

Question 9

Vertical up
Lap/t
Work angle

Answer 9

45

Question 10

Overhead
Butt
Work angle

Answer 10

90

Question 11

Overhead
Lap
Work angle

Answer 11

45

Question 12

Overhead
T
Work angle

Answer 12

1-45
2-55
3-35

Question 13

Flat
Butt lap T
Travel angle

Answer 13

15-30 drag

Question 14

Horizontal
Butt Lap T
Travel angle

Answer 14

15-30 drag

Question 15

Vertical down
Butt Lap/T
Travel angle

Answer 15

15-30 drag

Question 16

Vertical up
Butt lap/T
Travel angle

Answer 16

5-10 push

Question 17

Overhead
Butt lap T
Travel angle

Answer 17

5-10 drag

Question 18

Flat
Butt
Motion

Answer 18

Root pass-steady drag

Cover pass- weave

Question 19

Flat
Lap/t
Motion

Answer 19

Slight weave

Question 20

Horizontal
Butt lap t
Motion

Answer 20

Slight weave

Question 21

Vertical down
Butt lap t
Motion

Answer 21

Drag z weave

Question 22

Vertical up
Butt lap t
Motion

Answer 22

Push
Lap slight weave
T weave

Question 23

Overhead
Butt
Motion

Answer 23

Drag

Question 24

Overhead Lap T Motion

Answer 24

Slight weave

Question 25

Stainless steel - small droplets of metal are sent through the arc by directional force. - used where gravity could be a factor

Answer 25

Spray arc transfer

Question 26

Methods of filler wire transfer... Stainless steel

Answer 26

- spray arc transfer - short-circuiting transfer - globular transfer

Question 27

Travel an work angles are...

Answer 27

The same as you would use for mild steel

Question 28

- Tip increases 2-3 times the electrode diameter before separating. - common problems: (excessive spatter, poor arc stability, poor penetration)

Answer 28

Globular transfer

Question 29

Stainless steel -makes smaller puddles -arc extinguishes and arcs again 20-200 times per second: (cools the puddle, shallow penetration)

Answer 29

Short- circuiting transfer

Question 30

Welding process that uses an arc between a continuous filler metal electrode and weld pool..

Answer 30

MIG

Question 31

Mig requires a power supply unit that produces ____ or ____..

Answer 31

DCSP or DCRP

Question 32

____ is used for almost all applications of gas metal arc welding...

Answer 32

DCRP

Question 33

Mig uses ______ filler rod...

Answer 33

Continuous fed consumable

Question 34

True.. False.. Mig is the faster welding process.

Answer 34

True

Question 35

Recommended type of machine for mig welding...

Answer 35

Rectifier or motor generator

Question 36

The machine should also supply direct current with normal limits of ____-____ amps for all position welding

Answer 36

200-250

Question 37

Use ______ polarity for optimum efficiency...

Answer 37

DCRP

Question 38

_______ is generated from the current flowing through the gap between the electrode and the work..

Answer 38

Welding heat

Question 39

Machine not recommended....

Answer 39

Constant current

Question 40

Machine that is recommended...

Answer 40

Constant potential

Question 41

2 basic controls are...

Answer 41

Voltage rheostat and wire feed rheostat...

Question 42

2 types of welding guns...

Answer 42

Push and pull

Question 43

Welding gun used for soft wire aluminum and magnesium..

Answer 43

Pull gun

Question 44

Welding gun used for hard wires where currents exceed 250amps

Answer 44

Push gun

Question 45

Wire diameter best for welding thin materials

Answer 45

0.020, 0.030, 0.035

Question 46

Wire diameters most used for medium thickness are...

Answer 46

0.045" , 1/16"

Question 47

Wire diameter used on thicker metals..

Answer 47

1/8"

Question 48

Wire stick out for mig is...

Answer 48

3/8-3/4

Question 49

6 inert gases are...

Answer 49

Helium, argon, krypton, xenon, Radon, neon

Question 50

Argon + oxygen is for....

Answer 50

Welding alloyed steels, carbon steels, and stainless steels

Question 51

Argon + carbon dioxide is for....

Answer 51

Welding mild steel, low alloy steel and in some cases stainless steel

Question 52

Gas flow rate should be

Answer 52

35 cfh

Question 53

Replace v drive rollers with...

Answer 53

U shaped ones

Question 54

Minimize ______ whenever possible

Answer 54

Heat input

Question 55

______caused by pushing the wire past the leading edge of the puddle.

Answer 55

Whiskers

Question 56

Use ______ when welding up to 1"

Answer 56

Pure argon

Question 57

Use _________ when welding 1"-2"

Answer 57

90% argon 10% helium

Question 58

Produces better penetration

Answer 58

DCRP