Metals

Question 1

Define a ferrous metal

Answer 1

A metal that contains iron. You can get ferrous alloys as well as just iron

Question 2

What is an alloy and why are metals alloyed

Answer 2

a mixture of metals e.g. copper+ zinc = brass. This means you get the best properties of each metal. Brass it harder and stronger than pre copper or zinc

Question 3

give 4 stock forms of metals

Answer 3

sheet, strip, rods, bards, pipe/ tube, angle, etc.

Question 4

where do metals come from and how are they processed?

Answer 4

ores in the ground- they are crushed and heated in a blast furnace until they melt. They are then refined to get rid of impurities. the molten metal is then cast

Question 5

Explain how metals can be painted (finished)

Answer 5

A metal primer will be applied and then a topcoat. This can come in a range of colours and finishes and give a very durable watherproof finish

Question 6

Explain how metals can be plastic coated

Answer 6

they can be heated and then dipped in a polymer powder. This will then stick to the surface of the metal. When heated it will melt and form a thin layer on top of the metal.