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Welding > Welding Week 2 > Flashcards

Welding Week 2 Flashcards

1
Q

Type of current usually used for TIG on aluminum

A

AC (alternating current)

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2
Q

A separation at the joint root between the work pieces

A

Root opening

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3
Q

4 weld positions

A

Flat
Horizontal
Vertical
Overhead

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4
Q

What does AWS stand for?

A

American Welding Society

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5
Q

Ratio of arc time to total time

A

Duty cycle

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6
Q

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

A

Observed

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7
Q

Wearing proper eye protection while welding prevents _____.

A

Arc flash

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8
Q

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

A

Fume plume

Arc

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9
Q

When welding on exotic metals, use _____ exhaust.

A

Mechanical exhaust

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10
Q

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

A

Bracket

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11
Q

Shield others from _____ causing arc flash while welding.

A

Ultra violet rays

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12
Q

Correct ____ by pausing at each side of the weld.

A

Under cutting

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13
Q

Slang terms for SMAW (Shielded metal arc welding)

A

Stick welding

Stick electrode welding

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14
Q

Negative electrode to positive work piece

A

DCEN (straight polarity welding)

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15
Q

3 main functions of electrode coating

A

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

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16
Q

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

A

GMAW (gas metal arc welding)

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17
Q

Type of welding that normally uses direct current electrode positive

A

GMAW

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18
Q

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

A

Wire feeder

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19
Q

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

A

Wire conduit (liner)

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20
Q

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

A

Shield gas system

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21
Q

2 gases aided for mild/low alloy steel

A 
Argon (75% AR)
Carbon dioxide (25% CO2)
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22
Q

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

A

Thin copper wire

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23
Q

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

A

Flux cored arc welding (FCAW)

24
Q

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

A

Tubular electrode

25
Q

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

A

Gas tungsten arc welding (GTAW)

26
Q

In GTAW the _____ produces the arc.

A

Tungsten electrode

27
Q

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?

A

Manual method

28
Q

3 things TIG welder must control

A

Torch position
Filler rod depositing
Speed of travel

29
Q

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

A

Argon and helium

30
Q

2 great qualities tungsten is used for

A

High melting point

Excellent electrical conductor

31
Q

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

A

Ferrous and nonferrous

32
Q

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

A

Plasma arc cutting

33
Q

Popular for gouging and cutting metal

A

Air carbon arc cutting

34
Q

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

A

Preheating

35
Q

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

A

Should not

36
Q

All position certified weld

A

6G

37
Q

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

A

Keyhole

38
Q

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

A

GMAW

39
Q

Reverse polarity

A

DCEP

40
Q

Vertical position weld

A

3G

41
Q

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

A

SMAW

42
Q

Electrode is negative

A

DCSP (A.K.A. DCEN)

43
Q

Flat fillet weld position

A

1F

44
Q

Burns out impurities after the root pass

A

Hot pass

45
Q

Covers the weld deposit and provides additional protection from the atmosphere

A

Slag

46
Q

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

A

FCAW

47
Q

Type of welding that uses a tungsten electrode.

A

GTAW

48
Q

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

A

Certified

49
Q

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

A

Requalification

50
Q

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

A

Visual

51
Q

What kind of weld inspection is non-destructive?

A

Liquid penetrant inspection

52
Q

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

A

E6010

53
Q

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

A

ER70S-6

54
Q

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

A

ER316L

55
Q

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

A

E71T-1

56
Q

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

A

Empty

Welding (2 decks)

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