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| Because casting with plaster molds produces cast
products with smooth casting surfaces and high dimensional accuracy,
this method is in increasing demand as a non-ferrous metal precision
casting method. Noritake has developed different types of casting
plaster suited for various applications to respond to the diverse
needs of our customers. |
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For decorative use
For prototype parts use
For injection mold use
For tire mold use |
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Smooth casting surface
Excellent dimensional accuracy
Easy mold disassembly
Simple finishing |
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| >Decorative-use plaster, Gift |
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| The quick-heating-use plaster, “Gift,”
was developed to respond to the need for quick delivery. It
reduces the heating time to 600°Cdown to zero. It is a
revolutionary type of plaster that offers beautiful casting
surfaces. |
|
| >Decorative use plaster, AG-1 |
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| This decorative-use plaster has been developed
mainly for casting silver products. Unlike “KIFUJIN,”
it is not a quick heating type but realizes low cost production. |
|
| Features |
Gift |
AG-1 | | Compatible with quick heating |
O |
| | High heat-shock resistance |
O |
| | Beautiful casting surface |
O |
| | Excellent crushing resistance |
O |
O |
| Low operating cost |
O |
| | Realizes a low price. | |
O |
| Compatible metals | Gold |
O |
O |
| Silver |
O |
O |
| Some copper alloys |
O |
O |
|
Compatible with quick heating
The firing time can be shortened. A flask buried for more than
60 minutes can be placed in a kiln whose temperature is below
600°C without developing aby cracks. High
heat-shock resistance
The temperature can be raised sharply without the danger of cracks
developing in the mold.
Excellent crushing
resistance
Mold disassembly after casting can be easily done by immersing
the mold in water.
Low operating cost
Quick heating lengthens its service life, reducing electricity
consumption.
|
|
Gift |
AG-1 | | Mixing water amount (%) | 40 | 40 | | Stirring time (min) | 3 | 3 | | Starting time (min) |
13 |
13 | | Setting time (min) | 16 | 16 | | Final setting time (min) |
45 |
35 | | Wet compressive strength (MPa) |
2.8 |
1.8 | | Wet tensile strength (MPa) |
0.4 |
0.3 | | Setting expansion rate (%) |
0.7 |
0.4 |
| Water temperature (°C) |
20 | 20 |
|
Cautions when using Gift·in quick
heating mode
(1) Curing time after burying: Over 60 min.
(2) Temperature of the kiln in which to place the plaster: 600°C
or less
(3) Requirements for assembling a tree
I .Position of the tree tip: 20 mm or more above the upper surface
of the flask
II. Area for wax at the 20 mm position: Less than 25% of the flask
sectional area III.Sectional area/workpiece: 4 cm2or
less
Cautions when using AG-1
(1) Curing in a room environment for over 120 minutes after burying
is necessary.
Avoid rapidly raising the temperature; make sure that the temperature
inside the kiln is below 100°C.
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| >Noritake Non-foamed Metal Casting
Plaster G-2 |
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Reduced pressure or pressurized casting produces
cast products with sharp edges, high dimensional and surface accuracy,
and excellent strength.
Application fields
•Molds for prototype parts and injection products
Compatible metals
•Aluminum alloys
•Zinc alloys
•Lead alloys
•Copper alloys
|
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| >Noritake Foamed Metal Casting
Plaster G-1 |
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Porous, gas-permeable molds can be made by using
a high-speed stirrer to introduce air into the plaster slurry
and thereby produce foam. This allows gravity casting to be performed.
These molds can also be used as specifically shaped metal casting
cores in some special fields because of their high gas permeability.
Application fields
•Molds for rubber products, feeder head heat insulating molds,
etc.
Compatible metals
•Aluminum alloys
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| >Lost-wax casting plaster T-6 |
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Plaster casting using the lost-wax method has
the advantage of allowing complex yet accurate products to be
cast and products of an identical shape to easily be mass-produced.
Application fields
•Parts and casings for aircraft, electrical equipment, communications
and OA equipment use
Compatible metals
•Aluminum alloys, copper alloys
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