Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Millwright 1st Year > Metalurgy > Flashcards

Metalurgy Flashcards

0
Q

Very high carbon steel used to make punches, dies, sheer blades and cutting tools are often refers to as??

A

Tool steel or high speed steel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

List two types of ferrous metals?

A

Carbon steel and cast iron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Non-ferrous metals are?

A 
Aluminum
Magnesium
Zinc
Copper
Lead
And brass
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What non-ferrous metal is magnetic?

A

Nickel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Nickel is what color?

A

A white grey

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Steel and cast iron are usually what color

A

Silver grey to grey

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Hot rolled steel has what type of surface?

A

Black mill scale, cold rolled is shiny and smooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What mechanical properties does copper have?

A

It can be easily beaten ad be formed into a new shape.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What material is used in bearings?

A

Brass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Hardness is..??

A

The ability of metal to resist penetration and plastic deformation.

Examples are:
Carbide, ceramic and hardened steel.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Ductility is..?

A

Is the ability of a metal to be deformed without breaking.

Ductile metals are:
Steel, copper aluminum and lead machine steel.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Toughness is..?

A

The ability of metal to withstand shock and impact.

Example:
Steel chisels are tougher than a steel tap.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Tensile strength is..?

A

Is the a lilting a metal to withstand pulling without breaking.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Machine-ability measures.. ??

A

The was with which you can cut and shape a metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What steel is the most common used for building steel as most other structures..??

A

Carbon steel.

High strength, low alloy steels are also available.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Galvanized iron, stainless steel, aluminium, copper and brass are other materials available in sheet metal.

Y
N

A

Yes

16
Q

Carbon and alloy steels (numbering system) use a four or five digit code

Ex.
Chromium-molybdenum 4140

What is the 41 ad the 40

A

41 is the material

40 is the percent of carbon content in the material.

17
Q

Carbon steel mechanical properties

Low carbon 0.02-0.30% carbon

Medium carbon steel 0.30-0.60%

High carbon steel over 0.60%

A

Low carbon - can not be hardened

Medium carbon - has better mechanical properties than low carbon steel.

And has a high tensile strength (the ability of a metal to with stand pulling without breaking.

High carbon. Steel - meant to be hardened

Used for cutting tools

18
Q

High strength low alloy steel is low carbon or high carbon steel?

A

Low carbon - and is ideal for structures exposed to the environment.

19
Q

What material is a mixture of copper and zinc?

A

Brass

20
Q

What material consists of copper and tin?

A

Bronze

21
Q

What material is harder

Bronze or brass?

A

Bronze is usually harder than brass

22
Q

What I are advantage and disadvantage of beryllium-bronze??

A

It is used because of it’s strength and hardened

But

It is a health hazard due to it’s toxicity

23
Q

The structure of Soft steel is called

A

Pearlite

Pearlite steels consist of ferrite and cementite

24
Q

The structure of hardened steel is called

A

Martensite - it consists of angular needle like Chrystal’s

25
Q

The precise amount of ferrite and cementite in a steel depends on the percentage of…..

A

Carbon in the steel

26
Q

How is austenite formed?

A

Austenite is formed when Pearlite steel is heated to a red hot.

27
Q

The structure of hardened steel is called?

A

Martensite.

28
Q

What is the heat treating process?

A

Hardening
Tempering
Annealing
Normalizing

29
Q

What two processes are required for hardening a steel?

A

Steel is heated until it changes to austenite

Than quenched rapidly (steel must contain at least 0.20% carbon.

30
Q

What is the most effective quenching medium?

A

Brine(salt water) followed by

Water
Oil
Air

31
Q

What must be done to a steel immediately after hardening?

A

The steel must be tempered to relieve it’s brittle stresses and strains. If not it will crack.

32
Q

Full annealing does what to steel ?

A

Converts martensite steel to Pearlite taking out all the stresses making a hardened work piece soft again.

33
Q

Process annealing is used to restore what in the steels struxture.

A

Ductility - ability to be deformed without breaking.

34
Q

What material can withstand more stress

Steel or brass

A

Steel

35
Q

What material has the highest rte change of thermal growth

A

Aluminum

36
Q

Forging is what?

A

Forging I a process involving the shaping of metal.

Millwright 1st Year (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions