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Cost analysis for induction heating, compared with burners
Strict cost comparisons are only possible for specific installations at a given time, because of the instability of fuel costs, but it is always important to look beyond capital cost and to take into account other facts:
1. The time spent by the billet in the induction heater is much shorter than that spent in a radiant-heated furnace. As a result, the time available for scaling is reduced. Typical scaling with furnaces is 3 to 4 per cent; this is reduced to 0.5 per cent with electroheating. This scaling results in scrap and the accelerated wear of forging dies. (One company estimates an increase of up to 30 per cent in die life because ...
John Davies, Peter Simpson
Induction Heating Handbook,
McGraw-Hill Book Company
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 calibration and thermal treatment
heat assembling
depositing rough metal powder
heat shaping of the end of the pipes
stibine impregnation of the graphite pieces
plastic cover
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