The basin holding furnace has a capacity from kg 500 to Kg. 1.500 and it is foreseen for an use up to a pressure of 2 bar.




Translation and raising system

The furnace is mounted on a trolley with wheels, moved by an hydraulic cylinder, that allow translation outside of the perimeter of the framework for maintenance operations.

The connection with mold bush is assured by the furnace lifting, 250 mm stroke, carried out by four large diameter screwssimultaneously operatedby chain transmission by an electric motor gear power 1.5 kW.

The seal between furnace and mould is assured by a suspension system, made up of four groups of springs that are compressed during the raising of the furnace and that take care of compensating eventual slack due to thermal expansion and vibrations.

All the moving parts are protected against external agents and splashes of aluminium by means of sheet metal guards.

The furnace lid is designed to host one or two raiser tubes, according the casting requirements. The tubes can have different positions along the furnace horizontal axis, depending on the type of mould used. According to these positions, a special support to be positioned on the furnace opening is necessary each time.




Option a) Heating system -- *NEW system by Borli's research center*
The furnace is heated with three silicon carbide heating elements (40 KW maximum power) with specialprotection tubes.
The furnace is provided with three thermocouples to control the temperature of the molten alloy, of heating elements and of the furnace vault.Each one can be easily replaced.
A thermoregulator guaranteeing an accurate control of the bath temperature manages the feeding system.

Option b) Heating System
The furnace heating is carried out by 27 armoured resistances placed on the furnace lid for a total electrical power of 30 kW about. The resistance position allows replacing them very quickly when necessary, in fact it is sufficient to have a spare cover to restart the production in some hours.
The furnace is equipped with thermocouples for the melted bath and resistances temperature control, which are easy to replace from outside.