| Feature # |
|
Advantages & Benefits -- Electro-Vac® vs. WVC |
| 1 |
|
The Electro-Vac was designed in
1991 utilizing the latest insulation, heating and computer control
techniques. Inresa clones are manufactured by many companies based
on a 50 year old design, which has no computer or other recent
developments. |
| 2 |
|
Ceramic crucibles do not
contaminate the melt and cause porosity unlike graphite crucibles which
do. |
| 3 |
|
The Electro-Vac's crucible has
twice the volume to hold sprues and buttons without shotting. |
| 4 |
|
Shotting melts the large scrap
and drops into water to provide small shot for casting. Each time
the melt is cycled, such as shotting, high volatile components are boiled
off changing the alloy composition for the worse. That is why all
metal vendors recommend at least 50% new metal for each cast. |
| 5 |
|
The Electro-Vac can use larger
flasks than WVC. It can also use many small standard flask sizes. |
| 6 |
|
Three adapter rings are
furnished with the Electro-Vac at no additional cost. |
| 7 |
|
A faster casting cycle means you
get more casts per day with an Electro-Vac. |
| 8 |
|
Saves money on energy cost. |
| 9 |
|
Shorter preheat time means you
can go from cold start to cast in less time. |
| 10 |
|
The hydrogen in the Electro-Vac
removes oxygen many times better than a graphite crucible. The WVC
uses an inert gas (does nothing) in an attempt to displace air. This
has no effect on the oxides in the metal. |
| 11 |
|
The carbon in the graphite will
combine with nickel in white gold significantly increasing the hardness
and making it brittle. |
| 12 |
|
You can choose to have the
Electro-Vac wired for use with 115VAC or 230VAC. |
| 13 |
|
The Electro-Vac has automatic
cool down so the caster can leave after the last cast to attend to other duties. |
| Back to comparison chart |
| 14 |
|
The Electro-Vac has a modern
computer that directs the operator for proper sequence of operation. |
| 15 |
|
The Electro-Vac sounds a horn
before it is ready to cast to allow time to get the flask ready and cast
at the proper temperature, thereby preventing metal temperature overshoot. |
| 16 |
|
An LCD display informs the
operator of machine problems, as well as gives information about the cast. |
| 17 |
|
The Electro-Vac's heater element
is 1/3 the cost of the WVC and is warranted. |
| 18 |
|
The Electro-Vac is available in
English and Spanish versions. This includes the machine display and
the owners manual. |
| 19 |
|
A faster crucible change
increases the amount of time needed in between casts of different metals. |