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Welding Week > Week 2 > Flashcards

Week 2 Flashcards

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Welding Inspection Basics 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? (this question came up twice)

A

Root opening

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3
Q

What are 4 weld positions? Flat, Horizontal, Vertical and?

A

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

Brething 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

D.C.E.N (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

What are the disadvantages of FCAW, Is the require of____?

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

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21
Q

The push system is designed to push wire through the wire? (cant recall the question to this one but the answer was PUSH)

A

Wire conduit(liner)

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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

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23
Q

Two gases aided for mild/low alloy steel. (remember the percentages too)
Argon (75% A.R)

A

Carbon dioxide (25% C.O.2)

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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.((this question try to remember the base metal. I forgot how this one was)

A

Arc

28
Q

Three things TIG welder must control? (this one was fill in the blank)

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. (fill in the blank)

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 are 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? (This one was worded a bit different

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? (This question is not word for word

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
62000 P.S.I
“1” Can be welded in any position on carbon steel.
*O” means manufactures 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
“I’“‘means it can be welded in all positions
“T”’ means it is tubular.
“-1” identifies as selfshielded. Used on carbon steel

47
Q

8 Ways to control distortion

A
  1. Use fixtures and other clamping devices to restrain the movement of welded parts and allow the weld metal to stretch during welding.
  2. Use gusset plates, strongbacks, and tie-bar braces to restrain movement of parts during welding.
  3. Do not allow the weldment to overheat in an isolated area to equalize expansion forces
  4. Use a minimum amount of bevel angle and root gap opening on groove welds to reduce the amount of weld metal that will shrink.
  5. Always weld in the same direction with all passes to keep the expansion forces moving evenly in the same direction.
  6. Use chill bars (heat sinks) when welding light gage metals to draw away heat from the weldzone and prevent overheating and excessive expansion.
  7. Do NOT Overweld! This adds nothing to the strength of a weldment, and it increases the amount of heat expansion and weld metal shrinkage.
  8. Use a limited number of weld passes by using larger diameter electrodes or a different welding process to limit weld shrinkage.
48
Q

All position certified weld

A

6g

49
Q

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

A

Keyhole

50
Q

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

A

GMAW

51
Q

Reverse polarity

A

DCEP

52
Q

Vertical position weld

A

3g

53
Q

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

A

SMAW

54
Q

Electrode is negative?

A

Dcen

55
Q

Flat fillet weld position

A

1F

56
Q

Burns out impurities after the root pass

A

Hot pass

57
Q

Covers the weld deposit and provides additional protection from the atmosphere

A

Slag

58
Q

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

A

FCAW

59
Q

Type of welding that uses a tungsten electrode.

A

G.T.A.W

Welding Week (2 decks)

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