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welding > Welding Week 1 > Flashcards

Welding Week 1 Flashcards

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Welding Inspection Basics flashcards
1
Q

5 types of welding joints

A

CBELT (Acronym)

Corner
Butt
Edge
Lap
Tee
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2
Q

Strongest weld joint

A

Lap

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3
Q

Junction between the face of the weld and the base metal

A

Toe of a weld

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4
Q

3 major safety hazards

A

danger of falling objects
spray of sparks
fumes from burning process

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5
Q

Where should compressed gas cylinders be stored?

A

Safe place with good ventilation

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6
Q

T/F Acetylene and oxygen cylinders should be kept apart.

A

True

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7
Q

What should you do if a regulator has a problem?

A

Replace regulator or send it off for repair

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8
Q

T/F Oil and grease should be used in an oxyacetylene or oxyfuel system.

A

False

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9
Q

_____ will prevent overexposure.

A

Ventilation

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10
Q

_____ is indicated when a torch emits a shreik or hissing sound.

A

Flashback

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11
Q

What is the minimum shade protection for oxyacetylene welding?

A

5

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12
Q

What has 2 inner flame cones and a blue envelope?

A

Carburizing flame

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13
Q

What produces the worst fumes for you?

A

Galvanized

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14
Q

Flame temperatures

Carburizing
Neutral
Oxidizing

A

5,700
6,000
6,300

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15
Q

Use a _____ to move cylinders.

A

cart

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16
Q

Oxygen connectors are left/right handed

A

Right

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17
Q

Acetylene and other fuels are left/right handed

A

Left

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18
Q

Base principle of oxyfuel gas cutting (OGC)

A

Oxidation aided by heat

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19
Q

Oxyfuel gas cutting is confined to ferrous/non-ferrous metals

A

Ferrous

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20
Q

Cutting action takes place when ____ comes in contact with red molten metal.

A

Oxygen

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21
Q

What is the difference in welding and brazing/soldering?

A

Base metal is not melted in brazing/soldering

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22
Q

Allows metal to be stretched or otherwise changed in shape without breaking

A

Ductility

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23
Q

Metal expands/contracts when it is cooled

A

Contracts

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24
Q

Resistance of a metal to local penetration by a harder substance

A

Hardness

25
Q

Stress that resists sideways deformation in a metal

A

Sheer stress

26
Q

7 tests to identify metal (know 4)

A 
Appearance
Hardness
Magnetic
Chisel
Fracture
Flame or torch
Spark
27
Q

Higher carbon content =

A

Lower melting point

28
Q

Mixture of 2 or more elements is an

A

Alloy

29
Q

_____ is the element that determines the basic properties of steel.

A

Iron

30
Q

Always assume everything is _____ in a weld booth.

A

Hot

31
Q

T/F If travel speed is too fast, welding bead will lay flat.

A

False

32
Q

T/F During welding, the most important thing is the back of the weld.

A

False

33
Q

T/F Quenching is the process of cooling metal slowly

A

False

34
Q

Standards for proper welding ventilation is set by _____.

A

CAL OSHA

35
Q

T/F Cooling rate of metal is a factor in heat treatment of steel.

A

True

36
Q

Mechanical properties are most affected by what 3 things?

A

Size
Shape
Spacing of grains in metal

37
Q

Stress riser causes _____.

A

Fatigue failure

38
Q

At the end of a weld _____ is normally formed.

A

A crater

39
Q

When oxyacetylene cutting is performed, excess slag is an indication that _____.

A

Cutting speed is too slow.

40
Q

Stainless steels are defined by the presence of _____.

A

Chromium

41
Q

Using a tee joint, draw a 3/8” fillet weld on arrow side.

A

Draw

42
Q

Using a tee joint, draw a 1/2” double fillet weld.

A

Draw

43
Q

Using a tee joint, draw a 1/2” fillet weld flush contour 12” long on other side of arrow AND a 1/2” fillet weld concave contour 1” long w/ 3” pitch arrow side with OAW process

A

Draw

44
Q

Study of metals or metal properties

A

Metallurgy

45
Q

Measures toughness

A

Impact test

46
Q

Metal grows when heated

A

Thermal expansion

47
Q

Identifies unknown metal by removing small amount

A

Chip test

48
Q

Metals having an iron base

A

Ferrous

49
Q

Metals containing no iron

A

Non-ferrous

50
Q

Resist surfaces penetration, indentation and abrasion

A

Hardness

51
Q

Compound of carbon and hydrogen

A

Acetylene

52
Q

Ignition inside the blowpipe

A

Flashback

53
Q

Removing hardness by cooling metal slowly

A

Annealing

54
Q

Reheating and requenching metal to remove brittleness

A

Tempering

55
Q

Resistance of being pulled apart

A

Tinsel strength

56
Q

Explain safety procedures for preparing and making oxyacetylene flame cut on an 8” H beam in the field.

A
  1. PWSP (prework safety plan)
  2. JHA
  3. Ok to work or clearance
  4. Hot work permit
  5. Fire watch
  6. Proper PPE and fire extinguisher
  7. Clear area of flammable debris and protect equipment from potential damage
  8. Check/inspect fuel cylinders for proper operation
  9. Check fuel cylinders for sufficient amount of gas pressure
  10. Check/inspect torch for proper operation and clean tip
  11. Light torch and adjust flame
  12. Safely make cut, be aware of equipment and personnel
  13. Mark hot materials with chalk
  14. Dispose of materials safely and check area for signs of fire
  15. Sign off hot work permit, notify operations and file JHA
57
Q

Bits of slag, flux, oxides or dirt trapped in a weld.

A

Inclusions

58
Q

When edges or pieces of metal are heated until they flow together is called…

A

Fusion welding

welding (2 decks)

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