Filled Pattern Wax
Filled pattern wax has the
largest use of wax compounds currently produced. The addition of specialist
filler materials gives excellent injection characteristics to the wax.
The contraction range for filled pattern wax sets the standard for the
investment casting industry with a wide variety of applications including
the following:-
- Low to high viscosity wax
- Liquid Injection wax
- Paste Injection wax
- Screw Injection Technology
wax
- Low expansion wax
- Automatic Injection machine
wax
Emulsified Pattern Wax
These waxes have a low to medium
range of viscosity, with excellent surface finish properties. Emulsified
wax has a low adhesive factor and therefore they can easily be removed
from a die cavity. These compounds are environmentally friendly due to
the recycling process they offer. There are a variety of contraction rates
to suit all types of investment casting applications. The properties of
emulsified pattern wax can be summarised as follows.
- Low to medium viscosity
- Good surface finish
- Liquid and paste injection
- Low die adhesion properties
Straight Pattern Wax
This wax is used where specific
specialist requirements exist. The wax range has a full spectrum of available
compounds, from low viscosity to high and fast setting production materials.
The main properties of straight pattern wax can be summarised as follows:-
- Good surface finish
- Can be designed for specialist
requirements
- Flexible and tough compounds
available
- High strength wax can be
designed
Specialist Wax
These compounds are used to
help in the production of finished wax patterns ready for assembly. As
shown below they include wax for repairing, adhesive wax, wax for forming
shapes and a range of water soluble wax.
- Soft Repair Wax
- Hard Repair Wax
- Adhesive Wax
- Dip Seal Wax
- Rod Wax
- Spiral Forming Wax
- Water Soluble Wax
- Very Strong and Tough Water
Soluble Wax
- Fast and Total Dissolving Water Soluble Wax
Runner Wax
- Usually formulated with a slightly lower melting point than the pattern
was in use, and with a low viscosity for easy dewax
- Virgin products are available, more usually reclaimed runner wax is
used, produced from used wax from the autoclave
- May be straight (unfilled) or
- With a percentage of filler retained for improved injection, higher
strength, faster setting
- With additives to adjust toughness, flexibility, melting point, rheology
- Properties can be adjusted to suit inf=dividual foundry requirements
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