Welding Week 2

Question 1

Type of current usually used for TIG on aluminum

Answer 1

AC (alternating current)

Question 2

A separation at the joint root between the work pieces

Answer 2

Root opening

Question 3

4 weld positions

Answer 3

Flat
Horizontal
Vertical
Overhead

Question 4

What does AWS stand for?

Answer 4

American Welding Society

Question 5

Ratio of arc time to total time

Answer 5

Duty cycle

Question 6

Welding is a safe occupation if proper precautionary measures are always _____.

Answer 6

Observed

Question 7

Wearing proper eye protection while welding prevents _____.

Answer 7

Arc flash

Question 8

Avoid breathing air in the _____ directly above the _____. It prevents illness from overexposure.

Answer 8

Fume plume

Arc

Question 9

When welding on exotic metals, use _____ exhaust.

Answer 9

Mechanical exhaust

Question 10

When the electrode holder is not in use, hang it in _____ provided.

Answer 10

Bracket

Question 11

Shield others from _____ causing arc flash while welding.

Answer 11

Ultra violet rays

Question 12

Correct ____ by pausing at each side of the weld.

Answer 12

Under cutting

Question 13

Slang terms for SMAW (Shielded metal arc welding)

Answer 13

Stick welding

Stick electrode welding

Question 14

Negative electrode to positive work piece

Answer 14

DCEN (straight polarity welding)

Question 15

3 main functions of electrode coating

Answer 15

Shield pool
Stabilize and direct arc
Produces slag which protects pool from atmosphere, slows cooling rate

Question 16

Electric arc process that produces coalescence of metals by heating them with an arc between a continuous filler metal electrode and the work piece

Answer 16

GMAW (gas metal arc welding)

Question 17

Type of welding that normally uses direct current electrode positive

Answer 17

GMAW

Question 18

The _____ drives the electrode wire from the wire spool through the cable and gun to the welding arc.

Answer 18

Wire feeder

Question 19

The push system is designed to push wire through the wire _____.

Answer 19

Wire conduit (liner)

Question 20

What system displaces air around arc to prevent contamination of the molten pool by oxygen and nitrogen in the atmosphere?

Answer 20

Shield gas system

Question 21

2 gases aided for mild/low alloy steel

Answer 21

Argon (75% AR)
Carbon dioxide (25% CO2)

Question 22

Steel wires normally have thin _____ wire to improve electrical pick up and protect the wire from oxidation.

Answer 22

Thin copper wire

Question 23

What type of welding is used with DCEN (no shielding gas used) and DCEP current?

Answer 23

Flux cored arc welding (FCAW)

Question 24

What kind of electrode provides shielding by the flux contained from with in?

Answer 24

Tubular electrode

Question 25

Arc welding process that produces coalescence of metals by heating them with an arc between a tungsten electrode and work piece.

Answer 25

Gas tungsten arc welding (GTAW)

Question 26

In GTAW the _____ produces the arc.

Answer 26

Tungsten electrode

Question 27

What method has a relatively high degree of welding skill where the welder controls torch with one hand and feeds filler metal with the other?

Answer 27

Manual method

Question 28

3 things TIG welder must control

Answer 28

Torch position Filler rod depositing Speed of travel

Question 29

In GTAW, what are the two most common shielding gases?

Answer 29

Argon and helium

Question 30

2 great qualities tungsten is used for

Answer 30

High melting point | Excellent electrical conductor

Question 31

What kind of metals can can be cut by plasma process?

Answer 31

Ferrous and nonferrous

Question 32

Thermal cutting process which will cut anything that conducts heat and electricity.

Answer 32

Plasma arc cutting

Question 33

Popular for gouging and cutting metal

Answer 33

Air carbon arc cutting

Question 34

The application of heat to the base metal immediately before welding, brazing, soldering, thermal spraying or cutting.

Answer 34

Preheating

Question 35

Welding should/should not be done when the ambient temperature is below 0 degrees F.

Answer 35

Should not

Question 36

All position certified weld

Answer 36

6G

Question 37

What is developed when there is good penetration on a root weld?

Answer 37

Keyhole

Question 38

Type of welding that is shielded from an inert gas supply.

Answer 38

GMAW

Question 39

Reverse polarity

Answer 39

DCEP

Question 40

Vertical position weld

Answer 40

3G

Question 41

Type of welding that utilizes a rod coated with a baked flux.

Answer 41

SMAW

Question 42

Electrode is negative

Answer 42

DCSP (A.K.A. DCEN)

Question 43

Flat fillet weld position

Answer 43

1F

Question 44

Burns out impurities after the root pass

Answer 44

Hot pass

Question 45

Covers the weld deposit and provides additional protection from the atmosphere

Answer 45

Slag

Question 46

Type of welding where a tubular or cored electrode is used.

Answer 46

FCAW

Question 47

Type of welding that uses a tungsten electrode.

Answer 47

GTAW

Question 48

Before a welder can begin work on any job, they must be _____

Answer 48

Certified

Question 49

What is required if using a different process or a procedure is drastically altered during a welding job?

Answer 49

Requalification

Question 50

What is the most widely used and most popular weld inspection?

Answer 50

Visual

Question 51

What kind of weld inspection is non-destructive?

Answer 51

Liquid penetrant inspection

Question 52

Coated electrode for SMAW that has 60000 PSI tensile strength. Can be welded in any position on carbon steel. 0 means manufactures characteristics.

Answer 52

E6010

Question 53

Electrode is a solid wire that can be used as filler rod in GMAW and GTAW due to the ER designation. Has a 70000 PSI tensile strength. The 6 is wire chemistry

Answer 53

ER70S-6

Question 54

A 316 stainless steel electrode rod or stainless steel wire that can be filler metal in GMAW or GTAW. L means low carbon

Answer 54

ER316L

Question 55

Flux cored electrode that cannot be used as filler metal. Used in FCAW. 7 designates 70000 PSI tensile strength. 1 means it can be welded in all positions. T means it is tubular. -1 identifies as self shielded. Used on carbon steel

Answer 55

E71T-1

Question 56

When gas cylinders are empty, close the valve and mark cylinder ____.

Answer 56

Empty