For automatic casting furnaces, practically all the refractory technical knowledge acquired with maintenance channel furnaces is valid. That is to say, almost all refractory materials applied in the construction of maintenance channel furnaces can also be applied in the automatic casting furnace. On the other hand, short coil furnaces and accumulator furnaces in their refractory construction more closely imitate the crucible induction furnace, that is, they are defined based on the marked temperature differences and the cooling effect of the power coil, and the existing cooling.
The extraordinarily successful dry lining technique first developed for holding channel furnace inductors has also caught on for automatic casting furnace inductors.
There are almost no inductors that are not supplied with a mass of spinel either of type MA (mostly magnesite + spinel) or of type AM (mostly corundum + magnesite) or with a dry mass of pure corundum .
Unlike the holding furnace, from which the iron is almost always removed by tipping it, the casting procedure in the automatic pressure casting furnace occurs by pressure impulse. The pressure medium can simply be air or nitrogen. Also argon, when the oxygen part of the pressure medium produces undesired metallurgical modifications (loss of magnesium in the cast iron treated with spheroidal graphite) or due to the high oxidule parts of the slag (Fe O, Mn O) that negatively affects the wear of the oven lining.
Scale and blockages are especially common in the bathroom entrance elbow. With flanged spouts these obstructions are much more accessible than with integrated spout pieces.
