Describe any three of the following:
(i) Iron ore,
(ii) Galvanised steel,
(iii) Tuyere,
(iv) Tinplate. - Leaving Cert Engineering - Question b - 2014
Question b
Describe any three of the following:
(i) Iron ore,
(ii) Galvanised steel,
(iii) Tuyere,
(iv) Tinplate.
Worked Solution & Example Answer:Describe any three of the following:
(i) Iron ore,
(ii) Galvanised steel,
(iii) Tuyere,
(iv) Tinplate. - Leaving Cert Engineering - Question b - 2014
Step 1
Iron ore
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Answer
Iron ore is the rock from which iron is extracted. It is found in various forms, predominantly as iron oxides such as hematite or magnetite. Extraction occurs in a blast furnace where the ore is smelted to produce pig iron, a crucial step in the manufacture of steel.
Step 2
Galvanised steel
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Answer
Galvanised steel is steel that has been coated with zinc to prevent rusting. This protective layer helps to stop oxygen from reaching the underlying steel, thus reducing the likelihood of corrosion when the steel is exposed to moisture.
Step 3
Tuyere
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Answer
A tuyere is an air pipe that surrounds the blast furnace. It is responsible for delivering blasts of air into the furnace, increasing the temperature of the process through the burning of coke, which enhances the efficiency of iron production.
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