Modern Melting & Holding Furnaces for Light Metals

THERE are so many types of furnaces which are used for melting light metals. The modern melting plants incorp-orating an outline on the design of the furnaces and
the experience gained by the leading manufacturers of
such types of furnaces are described in brief in this paper.
In foundry practice, two different types of operation
are performed, viz. the regular melting operation and
the combined melting and holding operation.
The coreless mains-frequency crucible-type induction
furnace as shown in Fig. I is used for nicking operat-
ions to an ever increasing extent. The metal is held
in a rammed ceramic crucible whose life will extend
from one to live scars dependent on attendance and
maintenance.The metal to he melted or the liquid melt constitutes the secondary part of the furnace trans-former. The heat is generated in the melt by the
watercooled primary coils. The furnace is tilted by
hydraulical means and the quantity of metal poured at
a time can be adjusted to requirements.