TVCs - Single Chamber Casting Machine
Pressure over Vacuum Casting Machine, Double Chamber

TVCs is a family of fully automatic, robust, easy to use pressure over vacuum casting machines designed for small and medium sized casting laboratories.

This family of machines uses the well known pressure over vacuum concept, preferring the perforated flask to the solid flask.

Melting takes place in a protective atmosphere (nitrogen, argon or helium), while a powerful vacuum pump is used to increase the suction effect into the mould. Once the metal has entered the mould, strong compression is applied to the top of the tree to reduce shrinkage porosity.

Crucible graphite consumption is greatly reduced thanks to the gas wash process, which removes the oxygen from the charge in a matter of seconds.

The machine is fully automatic, making the operator's job very easy (all you have to do is load the alloy and crucible and press the START button). This will give you the most consistent results from flask to flask.

And remember, while the machine is running the cycle, you can be doing other important work in your factory. Having a consistent, robust and easy to use machine in your factory is the key to reliable casting production

Technology & Features


Technology-Features-tvcs

Gas Wash Procedure


  • Crucible loading operation introduces oxygen
  • The Gas Wash Purge procedure removes the oxygen(1) in a very fast and efficient way and then refills back the chambers with Argon or Helium gas(2)
  • Compared with the traditional crucible protection with flow-meter regulation the consumption of gas is dramatically reduced and the alloys oxidation is minimized
  • Moreover the crucible life is increased: TVC series crucible last up to 250 – 400 casting cycles according to the graphite quality

Melting


  • Advanced Self Tuning thermoregulation (ASTTM) with exact temperature control of the melted alloys.
  • Medium frequency induction heating stirs the melted alloy and leads to a perfect homogeneity.
  • Pulse Stirring Management (PSMTM) for an extremely low frequency stirring.

Injection and Compression


  • When the stopper opens, as soon as the molten metal fills the flask, a trigger is launched to the over pressure valve which will make the gas flow enter smoothly and quickly to compress the tree during the solidification phase to reduce shrinkage porosity

Tree protection after casting


  • After the solidification phase, the flask cools down in a protective atmosphere to avoid oxidation.
  • A blinking lamp will signal the operator that the cycle has ended and the flask can be removed

Technical Data


  TVC3s TVC4s TVC10s
Number of casting programs 1 1 8
Working Capacity of graphite crucible

1 kg Au

0.5 kg Ag

2 kg Au

1 kg Ag

3 kg Au

1.5 kg Ag

Flask max. diameter (mm) Ø150 Ø150 Ø150
Flask max. height (mm) 280 280 280
Induction power 3 kW 4 kW 8 kW
Vacuum pump External External External
Pressure over vacuum 2 bar 2 bar 2 bar
Max. temperature 1250°C 1250°C 1250°C
Shot maker
Autotest with data report
Touch screen instead of buttom control panel
Flask check before casting
Vacuum leakage detector
Oxygen Analyzer
Main alloys Gold (Au), Silver (Ag), Copper (Cu), Bronze, Aluminium (Al) and their alloys Magnesium

Provided - Available on request

Photos