Презентация - "Презентация по английскому языку для СПО "Materials Types""

Materials Types
Подготовила преподаватель
ГБПОУ РО «ШПТК»
Целикова Л.А.

ENGINEERING MATERIALS
METALS
NON-METALS

METALS
ferrous
non-ferrous
contain iron
do not contain iron

With the regard to the chemical composition
ELEMENTS
COMPOUNDS
MIXTURES
pure materials
chemically bound
Two or more elements or compounds mixed together
alloys

COMPOSITE MATERIALS
matrix with a reinforcing material inside
concrete

Scan the text and find 2 elements, 2 compounds, an alloy and a composite:


Generally, the steel used in reinforced concrete will have previously been exposed to water and to oxygen in the air. As a result, it will usually be partly corroded, being covered with a layer of iron oxide (rust). However, once the steel is inside the hardened concrete, it will be protected from air and water, which prevents further rusting. Additionally, the cement in concrete does not react aggressively with iron in the steel.

CHECK YOUR ANSWERS

1 What are these objects made of? Match the words in the box with the pictures

Match the words with their definitions

1 alloy
2 steel
3 PVC
4 concrete
5 gold
6 ferrous materials
7 ceramic
8 iron

a a type of plastic used for insulation
b a combination of different metals
c an alloy formed by mixing iron and carbon
d a precious metal used in jewellery
e metals containing iron
f a composite material used to build houses
g a metal not suitable as structural material
h a good insulator but brittle

1 alloy
2 steel
3 PVC
4 concrete
5 gold
6 ferrous materials
7 ceramic
8 iron

a a combination of different metals
b an alloy formed by mixing iron and carbon
c a type of plastic used for insulation
d a composite material used to build houses
e a precious metal used in jewellery
f metals containing iron
g a good insulator but brittle
h a metal not suitable as structural material
h a good insulator but brittle

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POLYMERS
materials made of long strings of carbon and other elements.

natural
synthetic
Thermoplastics
Thermosetting
plastics
can be melted by heat,
and formed in moulds
set permanently,
cannot be
moulded again

Give a name to the following definitions
1 a shorter name for polyvinylchloride
2 used for forming melted plastic
3 a group of atoms
4 a long chain of atoms
5 a plastic that sets permanently
6 not natural
7 particles that form molecules
8 another word for not natural

CHECK YOUR ANSWERS:
1 PVC
2 mould
3 molecule
4 polymer
5 thermoset
6 synthetic
7 atoms
8 manmade

Common non-ferrous engineering metals
Read the text about non-ferrous metals – that is, metals that do not contain iron.
Aluminium is widely used, often in alloy forms. An example of duralumin, an alloy used in aircraft manufacturing, which also contains copper (4.4%) and magnesium (1.5%). Aluminium can also be alloyed with titanium to produce very strong, lightweight metals.
Copper is an excellent conductor, which makes it ideal for use in electricity wires. Good ductility also makes it suitable for pipes. Copper is widely used in alloys, notably brass (copper and zink) and bronze (copper and tin, sometimes lead)
Silver is a precious metal – a reference to its high cost. It is better electrical conductor than any other material, so it is often used for electronic connections. Another precious metal – gold – is also an excellent conductor, and is highly corrosion- resistant.

Match the two halves

1 titanium
2 brass
3 copper
4 tin
5 lead

A о́лово
B медь
C тита́н
D свине́ц;
E лату́нь

1 titanium
2 brass
3 copper
4 tin
5 lead

A о́лово
B медь
C тита́н
D свине́ц;
E лату́нь

CHECK YOUR ANSWERS

.


Metal elements_________________________
Alloys___________________________________
Precious metals _________________________
Complete the word groups below using the names of the metals

CHECK YOUR ANSWERS
Metal elements: aluminium, silver, magnesium, titanium, copper, tin, zink, gold, lead
Alloys
Precious metals: silver, gold
:brass, bronze, duralumin

Present Simple Passive
is/am/are + V3
Modals can be + V3

Make sentences passive
They also call thermosetting plastics thermosets.
You can heat and mould a thermoplastic numerous times.
You cannot heat and mould thermosets again.
If you heat a thermoset after curing (отверждения), it will burn.

Thermosetting plastics are also called thermosets.
A thermoplastic can be heated and moulded numerous times.
Thermosets cannot be heated and moulded again.
If a thermoset is heated after curing, it will burn.

Complete the following diagram.

Используемая литература
Mark Ibbotson “Professional English in Use Engineering”,
Technical English for Professionals, Cambridge University Press
Sabrina Sopranzi “Flash on English for Mechanics, Electronics and Technical Assistance”, ESP series www.elionline.com