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Heat Treatment Flashcards

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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
Name two components that are case hardened. - Humphrey Marsh
Bearings and screwdriver tips
26
What are the faults know as when metal is cold worked? Yan K
Dislocations
27
What can heat treatment be used for? Yan K
Restoring the original properties of the metal
28
What is Annealing? Yan K
Application of heat to relieve internal stresses making the metal more malleable and easier to work
29
What is normalizing? Yan K
Relieving stress in steel caused by work hardening
30
What is tempering? Yan K
Raising the temperature of the steel to 230-300 degrees Celsius and quenching in water
31
What is lattice structure? Ed H
Nice neat rows
32
What happens when metal is stressed? Ed H
It hardens
33
What power does heat have? Ed H
It can alter metal
34
Normalising is what? Ed H
Unhardening
35
How strong is blue? Ed H
The toughest of them all
36
What happens if cold working is used instead of heat? -Ssnehnil G
The metal will fracture
37
In Annealing what heat are ferrous metals heated to? -Ssnehnil G
725 degrees Celsius
38
What can heat do to a metal? -Ssnehnil G
Alter the properties of a metal
39
What colour are copper an brass heated to? -Ssnehnil G
A dull red
40
What is a brand of a surface hardening compound? -Ssnehnil G
Kasenit
41
How do atoms exist? Ivan k
In a regular lattice structure
42
what happens when a metal is worked -IVan
Dislocations are formed
43
How can you alter the properties of a metal? -Ivan k
Using heat
44
How hard does steel get when tempered? -Oscar Lawson
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
What analogy is used to talk about fractures and stresses in metals? -Oscar Lawson
A paper clip- it can be bent a lot but it eventually breaks
46
How do you anneal aluminium? -Oscar Lawson
Heat it to at least 350 degrees, using soap to gauge the temperature. Afterwards, cool it slowly
47
How do you anneal copper or brass? -Oscar Lawson
Heat it to a dull red colour before cooling it or quenching it
48
What is quenching? -Oscar Lawson
Dipping a hot metal in water to cool it down fairly rapidly.
49
How hard does steel get when tempered? -Oscar Llama
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
What analogy is used to talk about fractures and stresses in metals? -Osvar Lawson
A paper clip- it can be bent a lot but it eventually breaks
51
Which components are usually case hardened | -Krystian Shanahan
Bearings and screwdriver tips
52
what property of steel does the carbon impact | -Krystian shanahan
The degree of hardness
53
What is the minimum percentage of carbon steel can contain | -Krystian Shanahan
0.4%
54
How are atoms arranged within a metal | - Krystian Shanahan
A lattice structure
55
What temperature range is used in tempering | -Krystian Shanahan
230-300 degrees
56
What metals when heated go dull red? | -Alfie Turner
copper and brass
57
do atoms in a metal exist in a regular lattice structure | -Alfie Turner
yes
58
Otherwise known as normalising or | -Alfie Turner
Annealing
59
Case hardening increase the water resistance of the steel? | -Alfie Turner
yes
60
Case hardening increase the heat resistance of the steel? | -Alfie Turner
no
61
Are Bearings case hardened? -Oscar Mabon
Yes
62
Are Screwdriver tips case hardened? -Oscar Mabon
Yes
63
Are Bolts case hardened? -Oscar Mabon
No
64
Are Screws case hardened? -Oscar Mabon
No
65
Are Metal cans case hardened? -Oscar Mabon
No

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