Researchers at Perm National Research Polytechnic University (PNIPU) have developed a computer model that allows predicting the behavior of photopolymer resins when heated. This technology will help reduce the number of defects in the production of parts for aviation, automotive, and dentistry.
Photopolymers are liquid resins that harden under ultraviolet radiation. They are used in 3D printing to create accurate models, which are then used in investment casting. However, when heated, the material expands, which can lead to deformation of the mold and defects in the finished product.
Our model predicts the behavior of photopolymers when heated and allows controlling its modes. We conducted multifactorial modeling and compared the results with experimental data and experimental developments previously implemented within the framework of the collaboration of PNIPU scientists. As a result, it turned out that the virtual copy of photopolymers allows an error of less than 5% (at certain temperatures), takes into account the heating rate and 40 key parameters. This allows to identify the risks of deformation and cracks in advance, optimize the process of burning out models and reduce defects, as well as reduce production losses.
The development is already being tested in industrial conditions. Scientists are collecting data on the influence of 3D printing settings on the quality of models, which will allow optimizing production processes.
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