3D printing with polymer based materials is the ideal solution for the cost-effective and time-saving production of investment casting models. The models are created by the layered application of a particle material that is selectively bonded with a binder. As the particle material, PMMA (polymethyl methacrylate), an acrylic plastic with excellent burnout properties, is used. Complex components up to a length of 1,000 mm can thus be produced quickly and easily.
- Cost-effective production of investment casting patterns: without the need for complex and expensive tool production.
- Complex components: virtually no limit to geometry.
- True-to-detail models due to a print resolution of up to 600 dpi.
- High dimensional stability: no danger of heat distortion - even with large 3D patterns.
- Surface finishing: wax infiltration for smoother investment castings or epoxy resin for improved strength of display models.
- No shell breakage in investment casting due to negative thermal expansion coefficients.
- Environmentally friendly: almost 100% of loose, unprinted material is reusable.
- Ideal for investment casting patterns, optimal burnout properties of the PMMA particle material.
- High print resolution and detail accuracy.
- Filigree designs possible: wall thicknesses (from only 0.6 cm) can be implemented.
- Economical production of batch sizes of 1 as well as small series.
|Base material||PMMA particle material (55 µm)||PMMA particle material (85 µm)|
|Binder-type||PolyPor B||PolyPor C|
|Tensile strength||≥ 2.0 MPa||≥ 2.0 MPa|
|Yield point||1 %||1 %|
|Burn-out temperature||700 °C||600 °C|
|Residual ash content||< 0.01 weight %||< 0.01 weight %|
|Especially suited for||Investment casting; design models||Investment casting|
|Advantages||sharp edges; for highest accuracy and true-to-detail; reusable particle material||burns out very well|
|TECHNICAL DATA||PLASTIC PARTS|
|Layer thickness||Standard 150 µm|
|Resolution x, y||up to 600 dpi|
|Accuracy||± 0.4 % (min. ± 0.3 mm)|
|SUITABLE FINISHING TREATMENT||Wax||Epoxy|
|Tensile strength||see base material||up to 25 MPa|
|Softening temp.||73 °C||80 °C|
|Burn-out temp.||see base material||-|
|Characteristics||smooth liquid, resistant surface||solid material, dyeable|