Modellery and Resin Moulds
Whitech
Advanced Solutions for Pressure Casting
Specific technique for the design of models and tools for the construction of resin moulds and tools for pressure casting.
For many years, WHITECH has developed and consolidated this specific technique for the design of models and tools for the construction of resin moulds and tools for pressure casting.
Today, this technique represents an indisputable fact of technical and production competitiveness. Our mould and die workshop operates along two main lines:
- Developing high-quality resin tools and moulds to be installed on casting machines.
- Carrying out laboratory tests to check the correct functionality of the mould before it is shipped and installed on the machine.
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Accuracy and Repeatability
CAD/CAM Modelling
- Receipt of a new plaster mould model, probably made by hand modellers, which means the model is not symmetrical, not perfect, forced thicknesses…
- Casting of the resin model in the plaster mould received
- A 3D scan of the model returns a point cloud
- A designer, starting from the point cloud, processes the model into surfaces using 3D cad software; design work with the modeller to define every small detail.
- Construction of the polyurethane model using a CNC machine
Case mould
- Construction of a block mould with CNC machine
- Construction of the case mould with gelcoat, resistant to high temperatures
Testing and final mould
- Casting of the test mould for use in the laboratory machine
- Casting for test firing in the Whitech laboratory machine
- Dimensional and functional verification of parts made from the test mould
- Construction of the final resin mould.
A success story
Whitech's microporous resin moulds are covered by a 20,000-cycle functional warranty.
More than 2,000 Whitech moulds equip pressure casting machines around the world, proving the quality and technological level of the moulds.
The success of our moulds is completely dependent on our porous resin formula, the technical details of which are given below.
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Delivery
A standard pack contains 800 kg of resin components that can be used to produce 1,000 litres of liquid resin under casting conditions.
This batch consists of:
– 183.0 kg of AL08-1 resin components in 2 barrels
– 404.0 kg of AL08-1 powder component W in 1 pallet box
– 173.0 kg AL08-1 powder component G in 1 pallet box
– 40.0 kg AL08-1 additive component DAA & powder
Storage
Unopened packages can be stored for at least 6 months at a temperature of approx. 20°C. Protect from heat, insulation and frost.
Technical Data
The technical data refer to the mould after casting.
-Compression strength: 30 N/mm2
-Bending strength: 10 N/mm2
-Water absorption: 27 – 30 %.
-Average pore radius: 8 – 11 μm Shrinkage: max. 0.4 %.
-Density of liquid resin: 1.02 g/cm3
-Thermal stability: decomposition from 100°C, softening from 70°C Colour: white of the final resin mould
Working temperature
All components (powder, water, resin and granular material) must have a temperature of between 15.0 °C and 17.0 °C, and during casting the temperature of the mixture must be between 18.0 °C and 20.0 °C.
The ambient temperature must be between 17.0 °C and 20.0 °C.
In the case of extremely high outside temperatures, it is recommended to process the material in an air-conditioned room.
Model temperature
Must be within the working temperature range; ideally, slightly higher.
Ceramic Division Catalog
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