Generally for the melting of cast iron, electric furnaces are not used because

Related MCQs

• Oil fired furnaces are generally used for the melting of
• Normal shrinkage allowance for aluminium is 18 mm per metre and that for cast iron 10 mm per metre. If the metal pattern is to be made of aluminium and the casting is to be of cast iron, the shrinkage allowed on wooden master pattern will be
• Flux used in cupola while melting cast iron is
• When sulphur is to be removed from cast iron while melting the same in cupola, the flux used is
• As a result of melting of cast iron in cupola, which of the following constituent undergoes least change in its percentage?
• In case of arc furnaces electric supply for electrodes consists of
• Electric furnaces can usually operate upto a temperature of
• Electric indirect are furnace is normally used for melting of
• Presence of sulphur in cast iron
• For grey cast iron the pouring temperature is