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Heat Treatment Flashcards

1
Q

What Is normally case hardened?

Lim.l

A

Survival knives, bearings & screwdriver tips

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2
Q

What is Kasenit

Lim.l

A

A case hardening compound.

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3
Q

What is a fault that can happen while cold working metal?

Lim.l

A

Dislocation

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4
Q

Why is steel tempered?

Lim.l

A

To make it tougher or harder

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5
Q

What is normalising?

A

Relieving stress in steel caused by work hardening

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6
Q

What type of structures do metals exist in?

Caspar Tyser

A

Atoms in a metal exist in a regular lattice structure.

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7
Q

What effect does Case Hardening have on steel?

Caspar Tyser

A

Case Hardening increases the wear resistance of the steel.

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8
Q

In Hardening and Tempering hardness depends on what?

Caspar Tyser

A

The carbon content of the steel (min 0.4%).

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9
Q

Annealing makes the metal more….?

Caspar Tyser

A

Malleable.

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10
Q

Heat Treatment occurs after which process?

Caspar Tyser

A

Cold Working.

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11
Q

What type of structures to metals exist in?

Torsai K

A

Atoms in a metal exist in a regular lattice structure.

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12
Q

What is heat treatment?

Torsai K

A

Heat can be used to alter the properties of a metal. The type of metal, temperature, and rate of cooling will affect final properties.

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13
Q

What does annealing do to the metal?

Torsai K

A

Annealing is the application of heat to relieve internal stresses, making the metal more malleable.

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14
Q

What is the difference between annealing and normalising?

Torsai K

A

Annealing occurs in non-ferrous metals, while normalising occurs in ferrous metals.

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15
Q

What does case hardening do to steel?

Torsai K

A

Case hardening increases the wear resistance of the steel, using a surface layer of carbon.

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16
Q

What can heat be used for?

-Lucas M

A

Heat can be used to alter the properties of a metal.

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17
Q

What can affect the final,properties?

-Lucas M

A

The type of metal
Temperature reached
Rate of cooling

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18
Q

What is annealing?

-Lucas M

A

The application of heat to relieve internal stresses.

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19
Q

What metals are heated to dull red and allowed to cool (or quenched)?

-Lucas M

A

Copper and Brass

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20
Q

Which metal is heated to 350-400 degrees Celsius and allowed to cool?

-Lucas M

A

Aluminium

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21
Q

Atoms in metals exist in what structure?

  • Humphrey Marsh
A

A regular lattice structure

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22
Q

When a metal is cold worked, the faults which are formed within the structure causing it to harden and eventually fracture are known as what?

  • Humphrey Marsh
A

Dislocations

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23
Q

What is heat treatment used for?

  • Humphrey Marsh
A

To restore the original properties of the metal.

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24
Q

What does case hardening do to steel?

  • Humphrey Marsh
A

It increases the wear resistance of the steel.

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25
Q

Name two components that are case hardened.

  • Humphrey Marsh
A

Bearings and screwdriver tips

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26
Q

What are the faults know as when metal is cold worked?

Yan K

A

Dislocations

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27
Q

What can heat treatment be used for?

Yan K

A

Restoring the original properties of the metal

28
Q

What is Annealing?

Yan K

A

Application of heat to relieve internal stresses making the metal more malleable and easier to work

29
Q

What is normalizing?

Yan K

A

Relieving stress in steel caused by work hardening

30
Q

What is tempering?

Yan K

A

Raising the temperature of the steel to 230-300 degrees Celsius and quenching in water

31
Q

What is lattice structure?

Ed H

A

Nice neat rows

32
Q

What happens when metal is stressed?

Ed H

A

It hardens

33
Q

What power does heat have?

Ed H

A

It can alter metal

34
Q

Normalising is what?

Ed H

A

Unhardening

35
Q

How strong is blue?

Ed H

A

The toughest of them all

36
Q

What happens if cold working is used instead of heat?

-Ssnehnil G

A

The metal will fracture

37
Q

In Annealing what heat are ferrous metals heated to?

-Ssnehnil G

A

725 degrees Celsius

38
Q

What can heat do to a metal?

-Ssnehnil G

A

Alter the properties of a metal

39
Q

What colour are copper an brass heated to?

-Ssnehnil G

A

A dull red

40
Q

What is a brand of a surface hardening compound?

-Ssnehnil G

A

Kasenit

41
Q

How do atoms exist?

Ivan k

A

In a regular lattice structure

42
Q

what happens when a metal is worked

-IVan

A

Dislocations are formed

43
Q

How can you alter the properties of a metal?

-Ivan k

A

Using heat

44
Q

How hard does steel get when tempered?

-Oscar Lawson

A

It depends on the amount of carbon it contains. It has at least 0.4% carbon but the higher carbon content, the harder it becomes

45
Q

What analogy is used to talk about fractures and stresses in metals?

-Oscar Lawson

A

A paper clip- it can be bent a lot but it eventually breaks

46
Q

How do you anneal aluminium?

-Oscar Lawson

A

Heat it to at least 350 degrees, using soap to gauge the temperature. Afterwards, cool it slowly

47
Q

How do you anneal copper or brass?

-Oscar Lawson

A

Heat it to a dull red colour before cooling it or quenching it

48
Q

What is quenching?

-Oscar Lawson

A

Dipping a hot metal in water to cool it down fairly rapidly.

49
Q

How hard does steel get when tempered?

-Oscar Llama

A

It depends on the amount of carbon it contains. It has at least 0.4% carbon but the higher carbon content, the harder it becomes

50
Q

What analogy is used to talk about fractures and stresses in metals?

-Osvar Lawson

A

A paper clip- it can be bent a lot but it eventually breaks

51
Q

Which components are usually case hardened

-Krystian Shanahan

A

Bearings and screwdriver tips

52
Q

what property of steel does the carbon impact

-Krystian shanahan

A

The degree of hardness

53
Q

What is the minimum percentage of carbon steel can contain

-Krystian Shanahan

A

0.4%

54
Q

How are atoms arranged within a metal

- Krystian Shanahan

A

A lattice structure

55
Q

What temperature range is used in tempering

-Krystian Shanahan

A

230-300 degrees

56
Q

What metals when heated go dull red?

-Alfie Turner

A

copper and brass

57
Q

do atoms in a metal exist in a regular lattice structure

-Alfie Turner

A

yes

58
Q

Otherwise known as normalising or

-Alfie Turner

A

Annealing

59
Q

Case hardening increase the water resistance of the steel?

-Alfie Turner

A

yes

60
Q

Case hardening increase the heat resistance of the steel?

-Alfie Turner

A

no

61
Q

Are Bearings case hardened?

-Oscar Mabon

A

Yes

62
Q

Are Screwdriver tips case hardened?

-Oscar Mabon

A

Yes

63
Q

Are Bolts case hardened?

-Oscar Mabon

A

No

64
Q

Are Screws case hardened?

-Oscar Mabon

A

No

65
Q

Are Metal cans case hardened?

-Oscar Mabon

A

No

Design (31 decks)

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