Welding

Question 1

What does CC. Stand for?

Answer 1

Constant current

Question 2

What does CV stand for?

Answer 2

Constant voltage

Question 3

7018, what is the tensile strength?

Answer 3

70x1000 = 70,000

Question 4

What does 1 stand for?

Answer 4

1 = all positions

Question 5

What does 0 stand for

Answer 5

Flat horizontail

Question 6

What is travel angle?

Answer 6

Is the angle of the electrode in relation to direction of travel

Question 7

What is travel speed?

Answer 7

Is the speed you are moving at, must be maintained so that the base metal is melted by Heat from the arc

Question 8

Street polarity deposits [. ) , more fluid (. )

Answer 8

Faster, puddle

Question 9

Reverse polarity -

Answer 9

Cold rods deeper penetration , less inclusions, more control

Question 10

What is most common length

Answer 10

14 inches

Question 11

What is the rule of thumb when setting the average on a welder?

Answer 11

Convert the electrode core wire diameter from a fraction to thousandths of an inch , then use this number to set the amperage

Question 12

What is porosity?

Answer 12

Is idenfied by small pit holes and is an indication of gasses trapped in the weld

Question 13

AWS code ER70S-6, what does the s stand for?

Answer 13

Solid wire

Question 14

What is the four basic types of welds?

Answer 14

Groove weld, fillet weld , plug weld, surfacing weld

Question 15

What are the four weld passes ?

Answer 15

Root pass, fill pass, cover pass, fill and finish pass

Question 16

What is arc blow?

Answer 16

Is a condition often encountered where extensive D C welding has been done at High Heat (High amps)

Question 17

How is arc blow caused?

Answer 17

Caused by magnetic fields being set up within the work due to current travelling in the same direction for a prolonged period.

Question 18

What are the basic joints R

Answer 18

Butt joint, lap joint, corner joint, T joint, edge joint

Question 19

What determines the type of electrode used?

Answer 19

Type of metal

Question 20

What is duty cycle?

Answer 20

How long the machine can weld at full power until it needs to cool down

Question 21

What are five key points to control weld

Answer 21

Heat (amp), distance (arc length), angle, Travel speed, manipulation

Question 22

What are the three types of power source?

Answer 22

Transformers
Inverters
Generators

Question 23

What is considered A multi- process machine?

Answer 23

Inverters

Question 24

What welding machine has the lowest start-up cost?

Answer 24

Transformers

Question 25

What is straight polarity known as?

Answer 25

Electrode negative

Question 26

When using straight polarity what terminal is the electrode connected to?

Answer 26

Negative terminal

Question 27

Reverse polarity is also known as ?

Answer 27

Electrode positive

Question 28

What terminal to connect to when welding reverse polarity

Answer 28

Positive terminal

Question 29

When is penetration deeper? DCEP or DCEN?

Answer 29

DCEP

Question 30

If a short arc is used, which of the following occurs?

Answer 30

Bead is narrow and built up an penetration is deep

Question 31

Five basic weld joints (hint bctel)

Answer 31

Butt, corner,t , edge, lap

Question 32

What symbol is this?

Answer 32

Field weld

Question 33

What symbol is this?

Answer 33

Weld all around

Question 34

How far do we open the valve of Ce 3000psi gas cylinder?

Answer 34

All the way (double-seated value)

Question 35

What is one was to avoid arc blow when arc welding?

Answer 35

Revert to an AC welding process

Question 36

What cause spatter?

Answer 36

Arc too hot

Question 37

What is true when vertical up SMAW welding?

Answer 37

Push the rod and keep arc short

Question 38

How would you increase the penetration of a stick weld

Answer 38

Increase the amperage or slow-down the pass of the arc

Question 39

Which gas is used for GMAW on carbon seals?

Answer 39

Argon / C02Mix