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heat treatment prelim

Total questions: 101

Worksheet time: 52mins

Name
Class
Date
1.
Which of the following is NOT a characteristic of most metals?
a)
Brittle
b)
Good conductor
c)
Ductile
d)
Malleable
2.
When an object shatters when struck by a hammer.
a)
luster
b)
malleable
c)
brittleness
d)
ductile
3.
When an object changes shape when struck by a hammer.
a)
luster
b)
malleable
c)
brittleness
d)
ductile
4.
If you have a material that can conduct electricity well it is probably a...
a)
Metalloid
b)
Matter
c)
Non-metal
d)
Metal
5.
What physical properties are used to classify elements as metals, non-metals, or metalloids?
a)
Color, smell, physical state
b)
Reactivity, streak, hardness
c)
Ability to burn, mass, density
d)
Luster, conductivity, malleability
6.

What below best describes the strenght term ?

a)

measure of how much tension the metal can resist

b)

when subjected to stress, it breaks without significant plastic deformation

c)

is the ability of a solid to bend or be hammered into other shapes without breaking.

d)

is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy.

7.

What below best describes the term brittleness?

a)

measure of how much tension the metal can resist

b)

when subjected to stress, it breaks without significant plastic deformation

c)

is the ability of a solid to bend or be hammered into other shapes without breaking.

d)

is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy.

8.

What below best describes the term malleability?

a)

measure of how much tension the metal can resist

b)

when subjected to stress, it breaks without significant plastic deformation

c)

is the ability of a solid to bend or be hammered into other shapes without breaking.

d)

is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy.

9.

What below best describes the term temper?

a)

measure of how much tension the metal can resist

b)

when subjected to stress, it breaks without significant plastic deformation

c)

is the ability of a solid to bend or be hammered into other shapes without breaking.

d)

is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy.

10.

What below best describes the term quenching?

a)

is the rapid cooling of a workpiece in water, oil or air to obtain certain material properties

b)

when subjected to stress, it breaks without significant plastic deformation

c)

is the ability of a solid to bend or be hammered into other shapes without breaking.

d)

is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy.

11.

What below best describes the term annealing?

a)

is the rapid cooling of a workpiece in water, oil or air to obtain certain material properties

b)

when subjected to stress, it breaks without significant plastic deformation

c)

is the ability of a solid to bend or be hammered into other shapes without breaking.

d)

is a heat treatment that alters the physical and sometimes chemical properties of a material to increase its ductility and reduce its hardness, making it more workable.

12.

What process is happening in this image?

a)

annealing

b)

hardening

c)

forging

d)

Quenching

13.

What process is happening in this image?

a)

annealing

b)

hardening

c)

forging

d)

Quenching

14.

What process is happening in this image?

a)

annealing

b)

hardening

c)

forging

d)

Quenching

15.

What process is happening in this image?

a)

annealing

b)

hardening

c)

forging

d)

Quenching

16.

What is this tool or equipment called?

a)

Tongs

b)

Pliers

c)

Long nose pliers

d)

Long clamps

17.

What is the equipment called?

a)

Metal frog

b)

Fire forge

c)

Metal forge

d)

Blacksmiths fire

18.

What is this equipment called?

a)

anvile

b)

anvil

c)

avile

d)

avil

19.

What is this gif trying to explain?

a)

That annealed metals increase in ductility and reduces its hardness, making it more spring back and forth

b)

That annealed metals become covered

c)

That annealed metals increase in ductility and rmake it bend to an arch

d)

That annealed metals increase in ductility and reduces its hardness, making it more workable.

20.

How can you tell if aluminium has been annealed?

a)

The metal turns red

b)

The soap on it turns black

c)

The soap sticks

d)

The metal goes blue

21.

What can you not quench with?

a)

Fire bricks

b)

Air

c)

Oil

d)

Water

22.

What is the specific name of this PPE?

a)

Welding gauntlets

b)

Welding gloves

c)

Leather gloves

d)

Protective welders gloves

23.

What is the specific name of this PPE?

a)

Welding shoes

b)

Shoe Protectors

c)

Welding Leather Shoe Protectors

d)

Welders shoes

24.

What is the specific name of this PPE?

a)

Face Protector

b)

Face mask

c)

Face Shield

d)

Face cover

25.

What is the specific name of this PPE?

a)

Heat resistant apron

b)

Protective apron

c)

Brown apron

d)

Leather welding apron

26.

This piece of equipment can be used to anneal aluminium, what is it called?

a)

Hot torch

b)

Flame torch

c)

Brazing torch

d)

Brass torch

27.

This can be used for annealing, What is it called?

a)

Welding hearth

b)

Fire brick hearth

c)

Flame hearth

d)

Brazing hearth

28.

Which of the following is the hardest constituent of steel?

a)

Ledeburite

b)

Austenite

c)

Bainite

d)

Martensite

29.

For steel, which one of the following properties can be enhanced upon annealing?

a)

Hardness

b)

Toughness

c)

Ductility

d)

Resilience

30.

In Annealing, cooling is done in which of the following medium?

a)

Air

b)

Water

c)

Oil

d)

Furnace

31.

In normalizing, cooling is done in which of the following medium?

a)

Air

b)

Water

c)

Oil

d)

Furnace

32.

Mild steel can be converted into high carbons steel by which of the following heat treatment process?

a)

Annealing

b)

Normalizing

c)

Case hardening

d)

Nitriding

33.

Upon annealing, eutectoid steel converts to which of the following?

a)

Perlite

b)

Cementite

c)

Austenite

d)

Martensite

34.

To get the desired property of steel by heating and cooling process........

a)

Normalising

b)

Hardening

c)

Heat treatment

d)

Tempering

35.

Name of the process having fine grains structure and mechanical properties ......

a)

Annealing

b)

Tempering

c)

Normalising

d)

Hardening

36.

Steel having increase carbon is .......

a)

Hardening increases

b)

Strength increases

c)

Strength decreases

d)

Ductility improves

37.

The steel which has 0.83 % of carbon, it increases the ............... of steel.

a)

Hardness

b)

Strength

c)

Malleability

d)

Ductility

38.

Which of the metal contains iron?

a)

Non- ferrous metals

b)

Non- ferrous metal

alloys

c)

Ferrous metals

d)

Bronze

39.

Which of the metal does not contain Iron?

a)

Ferrous metal

b)

Ferrous metal alloys

c)

Pig iron

d)

Non-Ferrous metal

40.

What is the process of changing the

structure and properties of steel by heating

and cooling?

a)

Heat treatement of

steel

b)

Austenite

c)

Martensite

d)

Cementite

41.

Which instrument is used for observing

visible exact grain size and structure of

broken metal?

a)

Power glass

b)

Microscope

c)

Lens

d)

Reading glass

42.

What is the process of heat treartment to

add the cutting ability to steel?

a)

Tempering

b)

Annealing

c)

Hardning

d)

Normalising

43.

What is the process of heat treatment to

remove the brittleness of hard metal?

a)

Hardening

b)

Annealing

c)

Normalising

d)

Tempering

44.

What is the property of quenching oil used in

heat treatment process for steels?

a)

Low viscosity

b)

High viscosity

c)

Corrosive

d)

Emulsification

45.

What is the process of heat treatment to

improve the machinability of steel?

a)

Normalising

b)

Annealing

c)

Hardening

d)

Tempering

46.

What is the process of heat treatment to

remove stress and strain formed in the

internal structure of steel due to repeated

heating?

a)

Annealing

b)

Hardening

c)

Normalising

d)

Tempering

47.

What is the process of heat treatment for

components to have hard wear resisting

surface and shock resisting core for better

service conditions and longer life?

a)

Annealing

b)

Normalising

c)

Hardening

d)

Surface hardening

48.

What is the operation if steel is heated to a

suitable temperature and kept at that

temperature until the carbon has penetrated

to the depth required?

a)

Carburising

b)

Liquid carburising

c)

Gas carburising

d)

Nitriding

49.

Which is the heat treatement process if

components are heated at 500°C in a

constant circulation of ammonia gas upto

100 hours and cooling them in air?

a)

Salt bath nitriding

b)

Gas nitriding

c)

Liquid carburising

d)

Gas carbursing

50.

What is the process of heat treatment if heat

is applied to the surface of the work rapidly

and quenched immediately by spraying with

water?

a)

Induction hardening

b)

Annealing

c)

Flame hardening

d)

Normalising

51.

Which heat treament process is a production

method of surface hardening?

a)

Flame hardening

b)

Nitriding

c)

Gas carburising

d)

Induction hardening

52.

Which heat treatment process of carburising

is done in a heated salt- bath?

a)

Liquid carburising

b)

Gas carburising

c)

Pack carburising

d)

Gas Nitriding

53.

Which is the heat treatment process if work

is placed in a gas tight container and heated

in a suitable furnace?

a)

Liquid carburising

b)

Gas carburising

c)

Pack carburising

d)

Gas Nitriding

54.

What is the first form of iron from iron ore?

a)

Pig iron

b)

Cast iron

c)

Wroguht iron

d)

Melleable cast iron

55.

Which one of the following metals is heavier than the others?

a)

Tin

b)

Lead

c)

Copper

d)

Aluminium

56.

What is the name of the property of metal, it will break rather than bend under shock or impact?

a)

Ductility

b)

Toughness

c)

Brittleness

d)

Malleability

57.

Which one of the following metal is used to make machine table and machine beds?

a)

PIg iron

b)

Cast Iron

c)

Wrought Iron

d)

Plain Carbon Stell

58.

Which one of the following elements(%) is used to classify plain carbon steel?

a)

NIckel

b)

Carbon

c)

Cobalt

d)

Manganese

59.

The percentage of carbon content in plain carbon steel is used to make high tensile tubes

a)

0.3 to 0.5%

b)

0.5 to 0.7%

c)

0.7 to 0.9%

d)

0.9 to 1.1%

60.

Hand files are made from.........

a)

Mild steel

b)

Medium carbon steel

c)

High carbon steel

d)

Dead mild steel

61.

What is the purpose of hardening?

a)

Refine the structure 

b)

Increase toughness

c)

Increase cutting ability

d)

Relieve stress and strain

62.

Which is the fastest quenching material used in heat treatment?

a)

Oil

b)

Air

c)

Water

d)

Brine solution

63.

Which heat treatment process increases the wear resistance of steel?

a)

Annealing

b)

Tempering

c)

Hardening

d)

Normalising

64.

What is the process to add cutting ability and wear resistance on steel?

a)

Tempering

b)

Annealing

c)

Normalising

d)

Hardening

65.

What is the heat treatment process to relieve strain and stress, eliminate hardness and improve the machinability in steel?

a)

Tempering

b)

Annealing

c)

Normalising

d)

Hardening

66.

What is the heat treatment process to refine the grain structure of the steel?

a)

Tempering

b)

Annealing

c)

Normalising

d)

Hardening

67.

What is the purpose of annealing?

a)

To relieve the internal stress

b)

To add cutting ability

c)

To refine the grain structure of the steel

d)

To increase wear resistance

68.

What is the process of steel being heated to required temperature and held in the same temperature for a period of time?

a)

Soaking

b)

Heating

c)

Quenching

d)

Hardening

69.

What is the purpose of brine solution, water, oil and air used in heat treatment process?

a)

Soaking

b)

Quenching

c)

Heating

d)

Austenite

70.

Why the tempering process carried out in steel?

a)

To add cutting ability

b)

To relieve strain and stress

c)

To refine the grain structure

d)

To regulate the hardness and toughness

71.

How the mechanical properties of steel like strength, toughness, ductility are affected?

a)

By tempering

b)

By hardening

c)

By annealing

d)

By normalising

72.

What quenching media is used for special alloy steel?

a)

Brine solution

b)

Water

c)

Oil

d)

Air

73.

What is the process if hot steel is cooled slowly the old structure is retained and it will have fine grains that makes it easily machined?

a)

Annealing

b)

Hardening

c)

Tempering

d)

Normalising

74.

Which tool materials are manufactured by powder metallurgy technic?

a)

Carbides

b)

High speed steel

c)

High carbon steel

d)

Medium carbon steel

75.

Which property avoid the breakage of cutting edge of tools?

a)

Hardness

b)

Brittleness

c)

Toughness

d)

Malleability

76.

What will happen if too much side relif in parting tool?

a)

Weaken the tool

b)

Get more tool life

c)

Strengthen the tool

d)

Helps easy chip flow

77.

What is the name of steel which contains 0.8% of carbon

a)

Hypo eutectoid steel

b)

Eutectoid steel

c)

Hyper eutectoid steel

d)

Pig iron

78.

The process of sudden cooling of steel is called as

a)

Dipping

b)

Soaking

c)

Quenching

d)

Normalizing

79.

Which of the following property is affected by heat treatment?

a)

Hardness

b)

Strength

c)

Ductility

d)

All of the mentioned

80.

Flame hardening involves

a)

Heating the surface above the transformation range

b)

Quenching after heating

c)

Minimum case depth is 1mm

d)

All of the mentioned

81.

Induction hardening process involves

a)

Heating surface by induction in field of invariable current

b)

Case depth minimum of 2mm are produced

c)

Heating surface by induction in field of alternating current

d)

None of the mentioned

82.

Quenching

a)

Consists of heating the component to critical temperature

b)

Cooling rapidly

c)

Increases hardness

d)

All of the mentioned

83.

Annealing involves heating the component to a temperature

a)

Slightly above the critical temperature

b)

Equal to critical temperature

c)

Slightly less than critical temperature

d)

None of the mentioned

84.

Austempering improves ______

a)

corrosion resistance

b)

toughness

c)

hardness

d)

tensile strength

85.

In conventional hardening _______ transforms to _______

a)

austenite, martensite

b)

cementite, martensite

c)

pearlite, α-iron

d)

austenite, ferrite

86.

What is the crystal structure of austenite upon heating?

a)

Body-centered cubic

b)

Face-centered cubic

c)

Hexagonal closely packed

d)

Body-centered tetrahedral

87.

What is the maximum solubility of carbon in austenite at 1148oC?

a)

0.09%

b)

0.8%

c)

2.08%

d)

14.35%

88.

_______________________ can be defined as a heat-treating process which creates a thin wear resistant layer on the outer surface of a material while permitting the inner core of the material to remain soft and ductile

a)

Surface hardening

b)

Surface quenching

c)

Hardenability

89.

I - After carburising, a secondary heat-treating step is employed to cause the hardening action.


II - Heating material to austenization temperature


III - Bringing a carbon-rich material into contact with the steel.


IV - This forms a carbon-rich layer or case which is capable of being heat treated to a very hard condition. (Fe3C2 )


V- The carbon atoms are enticed to move from the carbon rich material into the outer surface of the steel parts.


VI - It should be emphasized that the addition of carbon to the surface does not cause hardening directly.

a)

III - II - V - IV - VI - I

b)

III - II - V - VI - IV - I

c)

III - II - VI - V - IV - I

90.

"Normalizing and annealing are processes involving heating metal ________________ and slowly cooling it _______________ to obtain _________________ material".

a)

to a critical temperature, to room temperature, a softer and less distorted material.

b)

to a critical temperature, at room temperature, a softer and less distorted material.

c)

to elevated temperature, to room temperature, a softer and less distorted material

91.

"_________________ involves heating the material above the upper transformation temperature and then cooling it slowly at room temperature."

a)

Normalizing

b)

Annealing

c)

Quenching

d)

Tempering

92.

"_________________ involves heating the material above the upper transformation temperature and then cooled in a temperature controlled oven. "

a)

Normalizing

b)

Annealing

c)

Quenching

d)

Tempering

93.

Identify the 'limitations' of full annealing.

(Multiple answer)

a)

Soften the metal

b)

Time that it takes

c)

Inconvenience to be done

d)

Ties up ovens for long periods of time.

94.

Identify the 'characteristics' of material undergo normalizing and annealing.

(Multiple answer)

a)

Soften

b)

Weaken

c)

More ductile

d)

Less internal Stress

e)

Less cracking

95.

all alloys that are not iron based.

a)

Non-ferrous alloys

b)

Ferrous alloys

c)

Aluminum Alloy

96.

Those in which iron is the principal constituent, include steels and cast irons.

a)

Ferrous alloys

b)

Non-ferrous alloys

c)

Aluminum Alloy

97.

Highly resistant to corrosion (rusting) in a variety of environments, especially the ambient atmosphere

a)

Stainless Steels

b)

Ferrous alloys

c)

Iron-Carbon

98.

alloys that may contain appreciable concentrations of other alloying elements.

a)

Iron-Carbon

b)

Ferrous alloys

c)

Non-ferrous alloys

99.

Has mechanical characteristics approaching those of steel.

a)

Gray Cast Iron

b)

Ductile (or Nodular) Iron

c)

Iron-Carbon

100.

Categories of aluminum alloy does not subjected to heat treatment

a)

Non heat treatable

b)

Heat treatable

c)

age hardening

101.

Categories of aluminum alloy which treatments include solution heat treatment, quenching and precipitation or age hardening

a)

Heat treatable

b)

Non heat treatable

c)

age hardening

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