Question

differentiate between pig iron,cast iron and wrought iron?

Answer 1

• Iron obtained from a blast furnace is called pig iron. It contains about 95% Fe, 4% C any varying quantities of other impurities.
• Cast iron can be obtained by pouring pig iron directly into moulds of the desired shape. Cast iron is very hard and brittle and can be used where it will not be subjected to mechanical or thermal shock.
• Wrought iron is prepared “Pudding process’ in which cast iron is fused in a reverberatory furnace, the hearth of which is lined with haematite.