EZ Ringless Casting System™
Fast ... Accurate ... Economical
The DENTIFAX EZ Ringless Casting System is designed to increase productivity
by achieving consistently accurate results without the time-consuming steps
associated with the use of metal casting rings. The EZ Ringless Casting System
utilizes durable, reusable plastic rings that are tapered allowing for unimpeded
expansion of investment and easy removal of mold prior to burnout. This allows
for quick and easy divesting after casting while reducing clean-up chores.
The ringless casting method is easily understood and implemented in
laboratories because it does not require additional equipment and the technique
is similar to conventional methods. Investment expansion is easier to control
and not limited to the thickness of a ring liner. Dentifax El Ringless Casting
System is available for either round or oval castings with four graduated sizes
of round rings and two of oval rings permitting the use of traditional spruing
techniques.
Round Ringless Casting
The EZ Round Ringless Casting System is ideally suited for traditional
spruing techniques. The round tapered plastic rings come in four sizes,1-1/4" to
3-1/21" diameter. All are 2-1/8" high with a 4° taper. Tapered ring design
allows for maximum expansion of investment eliminating the need to remove the
investment before its final set and risking any damage. EZ DI-EQUI Plastic
Hollow Reservoir Sprues are recommended for clean, rapid burnout with no
residue, carbonization or pressure on the investment. An Introductory Kit is
available.
| Catalog No. |
Product |
| Round
Ringless Casting System -Introductory Kit: |
| 5100 |
(1) 1T Ring
(1) 2T Ring
(1) 3T Ring
(1) 4T Ring
(1) 1T Base (3 ea. size)
(2) 2T/3T Base
(1) 4T Base |
(1) Pair of 1T & 2T Cradles
(1) Investment Mold Ejector
(12) Hollow Plastic Reservoir Sprues
(10) Wax Reservoir Sprues (5 ea. size)
(1) Technique Manual |
|
|
 |
| Catalog No. |
Product |
| 5111 |
IT Tapered Round Casting Ring (6/pkg) |
| 5112 |
2T Tapered Round Casting Ring (6/pkg) |
| 5113 |
3T Tapered Round Casting Ring (6/pkg) |
| 5114 |
4T Tapered Round Casting Ring (3/pkg) |
| 5121 |
IT Base (6/pkg) |
| 5122 |
2T/3T Base (6/pkg) |
| 5123 |
4T Base (3/pkg) |
| 5102 |
Investment Mold Ejector (Round) |
| 5130 |
IT/2T Cradles (for centrifugal casting
machines) |
| 5131 |
1T Cradle (for centrifugal casting
machines) |
| 5132 |
2T Cradle (for centrifugal casting
machines) |
|
|
Oval Ringless Casting
The EZ Oval Ringless Casting System is perfectly suited for long-span bridges
and one-piece castings. There are two reusable oval rings, 2-1/4" and 3"
lengths. Both are 2-1/4" high with a 4° taper. An oval base accommodates either
ring size and is, also, reusable. DENTIFAX's patented Plastic Hollow EZ Feeder
Bars and patented El DI-EQUI Plastic Hollow Reservoir Sprues provide greater
strength and rigidity than wax runner bars and sprues. Repositioning of the wax
patterns and removal of wax-ups from the dies are accomplished without fear of
breakage or distortion. An Introductory Kit is available.
| Catalog No. |
Product |
| Oval
Ringless Casting System - Introductory Kit: |
| 5200 |
(1) 1-0 Ring
(1) 2-0 Ring
(2) 1-0/2-0 Base
(5) Wax Feeder Bars
(5) Feeder Bar Wax Rods
(10) Hollow Feeder Sprues (10ga.x 3") |
(1) Investment Mold Ejector
(5) Hollow Plastic Feeder Bars
(100) Hollow Feeder Sprues (10ga.x 1/4")
(1) Pairo f 1-0/2-0 Cradles
(1) Technique Manual |
|
|
 |
| Catalog No. |
Product |
| 5211 |
1-0 Tapered Oval Ring (Small, 6/pkg) |
| 5212 |
2-0 Tapered Oval Ring (Large, 6/pkg) |
| 5222 |
1-0/2-0 Oval Base (6/pkg) |
| 5202 |
Investment Mold Ejector (Oval) |
| 5201 |
Hollow Plastic Feeder Bars (l00/box)
|
| 5301 |
Wax Feeder Bars (l00/box) |
| 5311 |
Wax Feeder Bars (500/box) |
| 5221 |
Feeder Bar Wax Rods 8 ga.x 23/8"-6.1cm
(150/pkg) |
| 5243 |
Hollow Feeder Sprues 10ga.x 1/4"-6mm
(1000/pkg) |
| 5244 |
Hollow Feeder Sprues 10ga.x 3"-7.7cm
(l00/pkg) |
| 5230 |
1-0/2-0 Cradles (for centrifugal casting
machines) |
| 5231 |
1-0 Cradle (for centrifugal casting
machines) |
| 5232 |
2-0 Cradle (for centrifugal casting
machines) |
|
|
EZ FEEDER BARS™
Hollow Plastic or Wax
DENTIFAX's patented Plastic Hollow EZ Feeder Bar design offers significant
benefits to the laboratory technician for increased accuracy and productivity.
The continuously tapered hollow plastic interior provides superior strength,
rigidity and a rapid elimination of wax and gases for a clean burnout. The
contoured web supports the hollow feeder bar to facilitate the alloy flow toward
each end of the bar smoothly and evenly without adding bulk. The central web
contouring blends evenly with the hollow suppol1ing legs of the feeder bar to
prevent angles or ridges in the channels and chambers of the investment mold.
The horizontal bar is long enough when used with the larger Oval Ring to
sprue bridges and several single
units sprued at 45° angles. The bar seats snugly into the base, forming a smooth
crucible former with minimum waxing required for attachment. Notched ends of the
horizontal bar indicate where it should be trimmed.
Solid Wax Feeder Bars are available, if preferred. The Wax Feeder is also
notched at each end to indicate where it should be trimmed enabling it to be
usable on the smaller Oval Ring.
|
| Catalog No. |
Product |
| 5201* |
Hollow Plastic Feeder Bar (100/box) |
| 5301 |
Wax Feeder Bars (100/box) |
| 5311 |
Wax Feeder Bars (500/box) |
| 5221 |
Feeder Bar Wax Rods (150/pkg) |
| * US Patent
No. 4,558,841 |
|
|
Round and Oval
Casting Cradles
DENTIFAX provides specially modified cradles for both Round and Oval Ringless
Casting systems. There are cradles for the two rings sizes and investment mold
ejector to facilitate removal of the mold from the rings. Because of the 4°
taper, that makes the rings reusable, the investment molds must be properly
aligned in the casting machine so the molten alloy released from the crucible
will enter the narrow end of the investment mold accurately and flow smoothly
into the chambers of the mold.
|
 |
| Catalog No. |
Product |
| 5130 |
1T/2T Cradles (Round System) |
| 5131 |
1T Cradles (Round System) |
| 5132 |
2T Cradles (Round System) |
| 5230 |
1.0/2.0 Cradles (Oval System) |
| 5231 |
1.0 Cradle (Oval System) |
| 5232 |
2.0 Cradle (Oval System) |
|
|
 Ringless Casting -Venting
DENTIFAX Venting Rods offer a simple solution to the possibility of trapped
gases within the ring due to the stronger, more dense Investments now used.
Venting helps to provide gas-free complete casting.
 The DENTIFAX Vent Rod will not weaken the mold and bums out completely.
Minimum of 5mm must surround the mold. Metal will not break out of it or crack
the investment. A vent rod is attached to the highest part of the wax-up and
extends to the crucible former base. Molten alloy will drive any mold gases ahead
of it into the vent and out without completely filling the vent channel.
The cast vent should extend about half way through the vent passage and have
a round end. This indicates that all mold gases have been expelled from the mold
by the force and density of the cast metal. Cast vent is easily cut off when
trimming the casting.
Venting is an excellent indicator if the casting machine requires additional
or less winds. Excess force produces longer cast vents.
Catalog No. V9187 - Blue Vent Rods (20ga.x 5" (150/pkg)
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