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Millwright Block 1 Harmonized (NS) > Metallurgy > Flashcards

Metallurgy Flashcards

1
Q

Name the nonferrous metals (7)

A
  1. Copper
  2. Brass
  3. Zinc
  4. Bronze
  5. Aluminum
  6. Lead
  7. Other
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2
Q

Name the ferrous metals (3)

A
  1. Cast iron
  2. wrought iron
  3. Steel
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3
Q

Metals are divided into 2 major groups, what are they?

A

Ferrous and nonferrous

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4
Q

What do ferrous metals contain?

A

Iron and it’s alloys such as steel

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5
Q

Nonferrous metals contain little to no ________

A

Iron

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6
Q

Describe tensile strength

A

The ability to resist being pulled apart

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7
Q

Describe ductility

A

The ability of a metal to be stretched without breaking

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8
Q

Describe hardness

A

The metals ability to resist penetration

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9
Q

Describe brittleness

A

Will fracture easily if bent or sharply struck

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10
Q

Describe compression strength

A

A measure of how much squeezing force it can withstand before it fails

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11
Q

Describe yield strength

A

The force in psi or kgSmm at which a weld starts to pull apart.

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12
Q

Describe malleability

A

How easily a metal can be hammered into shape

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13
Q

T or F
Low carbon steel is malleable

A

True

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14
Q

True or false
Cast iron is malleable

A

False cast iron is not malleable

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15
Q

What is an alloy metal?

A

The intimate mixture of two or more metals

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16
Q

What is steel an alloy from?

A

Iron and controlled amounts of carbon

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17
Q

What is chromium’s benefits? (2)

A

Increases resistance to corrosion
Improves responsiveness to heat treatment

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18
Q

What are the benefits to Manganese?

A

Improves strength
Improves response to heat treatment

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19
Q

What are the benefits to nickel

A

Increases strength
Increases toughness
Increases impact resistance

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20
Q

Benefits of tungsten

A

Produces dense, fine grain
Helps steel retain its hardness
Helps steel retain strength under high heat

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21
Q

What is the melting point of mild steel

A

1483C / 2700F

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22
Q

What is the melting point of cast iron?

A

1261C / 2300F

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23
Q

What is the melting point of stainless steel?

A

1317C / 2400F

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24
Q

What is the melting point of copper?

A

1094 C / 2000 F

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25
Q

What is the melting point of aluminum?

A

650 C / 1200 F

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26
Q

What is the melting point of tin?

A

205 C / 400 F

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27
Q

What is the temperatures for soft solder (approximate)

A

350-700 F / 200-371 C

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28
Q

What is the temperatures for silver solder (approximate)

A

1100-1300 F / 594-700 C

29
Q

What is the temperatures for bronze welding (approximate)

A

1600-1800 F / 872-983 C

30
Q

What is the welding temperature range (approximate)

A

2000-2800 F / 1094-1540 C

31
Q

What are the common tests to determine the nature of metal? (What metal is) (8)

A
  1. Spark test
  2. File test
  3. Fracture test
  4. Color test
  5. Density or specific gravity test
  6. Ring or sound test
  7. Magnetic test
  8. Chip test
32
Q

What material breaks off in small particles when chipped?

A

Cast iron

33
Q

What material curls and clings when chipped?

A

Mild steel

34
Q

What metals can’t be tested with the chip test?

A

Metals with higher carbon, heat treated due to their hardness

35
Q

What are the 3 reasons to annealing?

A

So the metal may be worked cool
To make steel machinable
To relieve internal stresses

36
Q

What melts at a higher temperature mild steel or cast iron?

A

Mild steel

37
Q

What is the difference between iron and a steel?

A

Iron is refined iron ore, steel is refined iron plus an alloy of carbon and other substances

38
Q

Annealing is the ________ of metals by heat treatment

A

Softening

39
Q

What is malleable iron?

A

Cast iron that has been heat treated to make it more ductile, and more resistant to shock.

40
Q

What happens when malleable cast iron is welded?

A

Loses it malleability

This is why it should only ever be brazed or braze welded

41
Q

What would the prevent of carbon be in a AISI-SAE 1035 steel?

A

35%

42
Q

What does the L after stainless steel mean?

A

Extra Low in carbon

43
Q

List 3 white metals

A

Zinc die cast
Magnesium
Aluminum

44
Q

What is another name for “pot metal”

A

Zinc diecast

45
Q

What test would you use to determine if a metal is cast iron or steel?

A

Chip test

46
Q

What type of steel is covered with a hard black scale?

A

Hot rolled steel

47
Q

What are non ferrous metals?

A

Metals that are non magnetic

48
Q

What quality do we look for when we make items out of zinc?

A

Manufacturing ease

49
Q

What colour should you heat steel for the hardening process?

A

Cherry red

50
Q

Which test would you use to determine if a metal is high carbon or low carbon steel?

A

Spark test

51
Q

Which type of steel is closest in size to its nominal

A

Cold rolled

52
Q

What is the base metal in bronze?

A

Copper

53
Q

What quality do we look for when we make items out of magnesium?

A

Lightness

54
Q

Which test would you use to determine if a metal is polished steel or stainless steel?

A

Magnet test

55
Q

What is the process used to harden the outside surface of low carbon steel called?

A

Case hardening

56
Q

What is the process used to take hardened high carbon steel to a tougher hardness called?

A

Tempering

57
Q

Hardened steel is created from the transformation to what form?

A

Martensite

58
Q

What are the 3 main types of stainless steel?

A

Austenitic
Martenstic
Ferritic

59
Q

What does the Rockwell hardness tester measure to establish hardness?

A

Depth of penetration

60
Q

What process heats steel slightly above the upper critical temperature and then slowly cools to relieve stresses?

A

Normalizing

61
Q

What’s the depth of typical case hardening?

A

1/64

62
Q

Which heat treatment is used to soften a medium carbon steel in preparation for machining?

A

Annealing

63
Q

What is the ability of a metal to be stretched to a greater length without ripping apart called?

A

Ductility

64
Q

What metal is typically found in bronze?

A

Tin

65
Q

What is the ability of a metal to deform without rupture while being worked called?

A

Malleability

66
Q

What instrument is used to measure the vertical high temperatures involved in metallurgy

A

Pyrometer

67
Q

What process would you apply to a freshly welded carbon steel bandsaw blade?

A

Annealing

68
Q

What is the main characteristic of stainless steel?

A

Corrosion resistance

69
Q

Process used to harden medium carbon sprocket teeth for wear resistance is?

A

Flame hardening

Millwright Block 1 Harmonized (NS) (9 decks)

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