Improvement in the Permeability Characteristics of Injection Mold Fabricated by Additive Manufacturing and Irradiated by Electron Beams
| Autor: | Hiroshi Koresawa, Hiroyuki Narahara, Hironobu Fujimaru |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Materials science Mechanical Engineering technology industry and agriculture Nanotechnology 02 engineering and technology Electron equipment and supplies medicine.disease_cause complex mixtures Industrial and Manufacturing Engineering 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Permeability (electromagnetism) Mold medicine Irradiation Composite material |
| Zdroj: | International Journal of Automation Technology. 11:97-103 |
| ISSN: | 1883-8022 1881-7629 |
| DOI: | 10.20965/ijat.2017.p0097 |
| Popis: | This paper describes a metal mold with permeability fabricated by metal laser sintering with high-speed milling, which is an additive manufacturing method, and discusses the improvement in permeability. In this method, the sintered body is produced with gas exhaust tubes based on the porous structure. To maintain permeability, ensuring that the gas exhaust tube is not blocked is essential. Blockages may occur because of reasons such as the deformation of the gas exhaust tube due to the milling process during fabrication and generation of mold deposits within the gas exhaust tube during injection molding. In this research, by irradiating the surface of a sintered body, with a gas exhaust tube, by an electron beam, water repellency attributed to the reduction in surface free energy and recovery of permeability are confirmed. Further, in a fundamental experiment with an injection molding machine, the permeability of a permeable sintered body irradiated an electron beam increased by approximately 2.8 times as compared to the permeability of a sintered body that was not irradiated. |
| Databáze: | OpenAIRE |
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