TVCd-L: Sheets and Rods

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Vacuum Casting Machine for Sheets and Rods

​This family of furnaces are used to produce high quality semi-finished product, like sheets or rods, starting by raw materials melted by induction heating in a protective atmosphere and then poured in vacuum into an ingot mould, that can be in copper, in graphite or other materials.

Melting and pouring phases are protected by inert gas, which can be chosen between Argon, Nitrogen or Helium.

The induction field is designed to guarantee a strong homogenization of the alloy thanks to the stirring effect of the magnetic field which works while the metal is being melted in the crucible.

The machine is fully automatic having a countless number of programs for every kind of alloy.
The control logic is provided with a PC based data acquisition system aimed to sample the process variables with reporting function after every casting cycle. Data can be display in graphic format or exported to external PC for analysis.

The furnace can be provided with an Oxygen analyser to control and monitor the ppm of oxygen present in the melting chamber during the cycle.

TVC-XL control panel
 

TECHNOLOGY and FEATURES
 
Gas Purging Procedure
 

  • Crucible loading operation introduces oxygen
  • The Gas Purging procedure removes the oxygen with Argon, Nitrogen or Helium gas.
 
Melting
 
  • Advanced Self Tuning thermoregulation (AST™) with exact temperature control of the melted alloys
  • Two Thermocouples Temperature Measurement:
    • One Thermocouple in the stopper
    • One Thermocouple inside the crucible wall
  • Medium frequency induction heating stirs the melted alloy and leads to a perfect homogeneity
  • Pulse Stirring Management (PSM™) for an extremely low frequency stirring
 
Injection and Flow Control
 
  • When the stopper lifts up, it is very important to control the injection rate to increase consistency in metallurgical properties
  • TVC has the unique feature to have the injection rate controllable and programmable (IRC™)
  • The metal exits the crucible with a narrow, constant and straight beam. Turbulences can be controlled and minimized acting on the program’s parameters.
 
  TVC12d-L TVC25d-L TVC35d-L TVC45d-L
Crucible volume 500 cc 2-3 liter 4 liter 7 liter
Crucible capacity 7 kg Gold
4 kg Silver
42 kg Gold
24 kg Silver
56 kg Gold
32 kg Silver
90 kg Gold
50 kg Silver
Mould max diameter (mm) Provided 150 / Available on request 200 350 350 350
Mould max height (mm) Provided 300 / Available on request 400 600 600 600
Induction heating power 12 kW 25 kW 35 kW 45 kW
Vacuum pump Internal Internal Internal Internal
Pressure over vacuum 1 bar 1 bar 1 bar 1 bar
Max temperature Provided 1250°C   /   Available on request 1600°C
Metal granulation Available on request Available on request Available on request  
Autotest Provided Provided Provided Provided
Monitoring system for data acquisition Available on request Available on request Available on request Available on request
Mould check before casting Provided Provided Provided Provided
Vacuum leakage detector Provided Provided Provided Provided
Oxygen Analyzer Available on request Available on request Available on request Available on request
Remote assistance Available on request Provided Provided Provided
Main alloys Gold (Au), Silver (Ag), Copper (Cu), Brass, Bronze, Aluminium (Al) and their alloys

Provided Provided - Available on request Available on request

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