| Feature # |
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Advantages & Benefits -- Inducto-Vac® 4kw vs. Inresa
Clone |
| 1 |
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The Inducto-Vac was designed
100% by Memco, Inc. Inresa clones are manufactured by many companies
and are based on a design that is over 40 years old. |
| 2 |
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Inducto-Vacs use modern ceramic
crucibles that do not contaminate the melt or cause porosity.
Graphite crucibles do contaminate the melt and cause porosity. |
| 3 |
|
Inducto-Vac crucibles hold more
volume. Why? Sprues and buttons can be placed directly in the
crucible, thereby eliminating a shotting process. "Shotting",
the large scrap (sprues and buttons) converts it into small pellet-like
portions (shot) for casting by melting it and quenching it in water. |
| 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. Eliminating
shotting your scrap assures you that is can be re-cast with confidence
because it has retained the highest level of metallurgical integrity. |
| 5 |
|
The Inducto-Vacs maximum flask
size is a generous 5" diameter by 9" high. The clone's
enlarged chamber, made necessary in order to accommodate the seldom needed
6" diameter x 10" high flask size, takes longer to evacuate.. |
| 6 |
|
Inducto-Vacs are sold with three
adapter rings at no additional cost. Adapter rings for clones cost
extra money. |
| 7 |
|
The Inducto-Vac has a 4 minute
cycle time, which is the time from flask to flask. |
| Back to comparison chart |
| 8 |
|
Inducto-Vacs have an automatic
cool down feature, allowing the caster to attend to other duties after the
last cast.. |
| 9 |
|
Casting different alloys
requires changing crucibles to prevent contamination. Memco
crucibles can be changed immediately after casting. The clones'
graphite crucible cannot be changed hot; they have to cool down, wasting
valuable production time. |
| 10 |
|
The hydrogen in the forming gas,
used by the Inducto-Vac, removes oxygen more effectively than inert
gases. Clones use inert gases in an attempt to displace air.
Displacing air has no effect on eliminating oxides entrapped in the metal. |
| 11 |
|
The carbon in the graphite
crucibles will
combine with nickel in white gold significantly increasing the metal's hardness
and making it brittle. |
| 12 |
|
The Inducto-Vac has a horn which
sounds before each cast allowing the operator a sufficient amount of time
to prepare the next flask for casting at the proper temperature.
Casting at the proper temperature prevents overcooking the metal.
Overshooting the proper temperature and overcooking the metal enriches the
karating. Translated, that costs money. |
| 13 |
|
Inducto-Vacs utilize
trouble-free, manually operated metal release systems enabling the
operator to pour as soon as the metal FIRST reaches proper casting
temperature. Some clones allow temperature overshoot and then cast
on the decreasing temperature slope after and over temperature peak.
See illustration below: |
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