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Welding > Week 2 > Flashcards

Week 2 Flashcards

1
Q

Type of current usually used for TIG on aluminum?

A

A.C (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

What are 4 weld positions?

A

Flat, Horizontal, Vertical and?
Overhead

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4
Q

What does A.W.S stand for?

A

American Welding Society

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5
Q

Ratio of Duty cycle is ___ time and ___ time?

A

Arc; Total

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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

To Prevent illness due to over exposure to hazardous materials from the fume plume you should avoid?

A

Breathing the Fumes

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9
Q

When welding on exotic metals, use?

A

Mechanical exhaust

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10
Q

When the electrode holder is not in use, hang it in the gas cylinders true or false?

A

False ( hang in the 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 undercutting by ___ at each side of the weld.

A

Pausing

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13
Q

Slang terms for SMAW

A

stick welding

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14
Q

Negative electrode to positive work piece?

A

DCEP (straight polarity welding)

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15
Q

In all welding a weld pool must be protected from contamination by the atmosphere in the welding process. This is accomplished by either gasses produced by ___ or in the electrode at it is consumed by shielding ___ introduced in the arc.

A

Coating, gas

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16
Q

What are the disadvantages of FCAW. Is the require of ___ removal and ___cleaning

A

slag, weld

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17
Q

In the welding shop you should assume that _____?

A

All work and tools are hot

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18
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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19
Q

Type of welding that normally uses direct current electrode positive?

A

GMAW

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20
Q

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

A

Wire feeder

21
Q

The push system is designed to push wire through the wire?

A

Push Wire conduit (liner)

22
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

23
Q

Two gases aided for mild/low alloy steel

A

co2 25% argon 75%

24
Q

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

A

Copper

25
Q

FCAW can be used in either D.C.E.N and D.C.E.P current true or false?

A

True

26
Q

In the FCAW process the shielding of the weld is provided by a ____ ?

A

Flux Cord

27
Q

In GTAW the tungsten electrode is only use to produce ___ which creates a puddle in the base metal

A

Arc

28
Q

Three things TIG welder must control?

A

Torch position
Filler rod depositing
Speed of travel

29
Q

In G.T.A.W, what are the two most common shielding gases. One is Argon and the other _____?

A

Helium

30
Q

Two great qualities tungsten is used for.

A

High melting point
Excellent electrical conductor

31
Q

Ferrous and nonferrous can be cut by plasma process?

A

true

32
Q

Reverse polarity is not generally use in TIG welding because it can ___ the tungsten electrode.

A

Melt

33
Q

Plasma arc cutting is a ____cutting process.

A

Thermal

34
Q

Air carbon arc cutting is commonly used in?

A

Gouging and cutting

35
Q

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

A

Before

36
Q

Welding should or should not be done when the ambient temperature is below 0 degrees Fahrenheit?

A

Should not

37
Q

A TIG welding torch head can only be cooled with water true or false?

A

False (air too)

38
Q

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

A

Certified

39
Q

If the welder uses different process or if the welding procedure is drastically altered?

A

Re-qualification is required

40
Q

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

A

Visual

41
Q

A liquid dye penetration kit is destructive method is used to find minute discontinuities flaws in a weld?

A

False

42
Q

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

A

Empty

43
Q

What kind of electrode is E6010?

A

Coated electrode for S.M.A.W that has
60000 P.S.I
“1” Can be welded in any position on carbon steel.
“0” means manufacturer characteristics.

44
Q

What kind is ER70S-6

A

Electrode is a solid wire that can be used as filler rod in G.M.A.W and G.T.A.W
70000 P.S.I
The “6” is wire chemistry

45
Q

What kind is ER316L?

A

316 stainless steel Electrode Rod or wire that can be filler metal in G.M.A.W or G.TA.W
L means low carbon

46
Q

What kind is E71T-1?

A

Flux cored electrode that cannot be used as filler metal. Used in F.C.AW.
70000 P.S.I
“1”means it can be welded in all positions
“T” means it is tubular.
“-1” identifies as self shielded. Used on carbon steel

47
Q

8 Ways to control distortion

A

Use clamps so there is no movement in weld
Use braces to prevent movement
Do not over heat weldment
Use small amount of bevel angle
Weld in the same direction
Use chill bars
Do not over weld
Use LG diameter rod so use small amount of weld passes

48
Q

Vocabulary words

A

L.K.D.Q.E.M.F.A.N.I.C.H

Welding (2 decks)

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