Influence of Baking Temperature on Shell Fracture Using Photo-solidified Polymer as Model Material
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Accession number;05A0348916
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| Title;Influence of Baking Temperature on Shell Fracture Using Photo-solidified Polymer as Model Material |
| Author;
NAGATA SHIN
(Akita Prefect.Inst. Industrial Technol, JPN)
GOTO SHOJI
(Akita Univ., Facutity of Engineering and Resource Sci, JPN)
UCHIDA FUJIO
(Akita Prefect.Inst. Industrial Technol, JPN)
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Journal Title;Journal of Japan Foundry Engineering Society
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Journal Code:G0096A
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ISSN:1342-0429
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VOL.77;NO.4;PAGE.240-245(2005)
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| Figure&Table&Reference;FIG.5, TBL.5, REF.8 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;In precision casting using photo-solidified polymer models by the same process as wax models, the mold may fracture due to thermal stress arising in the baking process where the model is melted and evaporated, because polymer has higher rigidity than wax. To decrease this thermal stress, heat shock method may be used. Experiments were therefore conducted to study the relation between baking temperature and heat decomposition gas outlet area in the use of the heat shock method, and the relation between baking temperature and number of coating times. In the experiments a photo-solidified polymer model of a hollow form cube (75 * 75 * 75 mm with 1 mm thickness) was made, and the size of the heat decomposition gas outlet area was changed from the diameter of 2.8 mm to 45.0 mm. The baking temperature was changed from 673 K to 1273 K, and the number of coating times was changed from 6 to 9. It was found that in order to prevent cracks in the mold containing the model, there exists a suitable reration between the baking temperature, heat decomposition gas outlet area, and number of coating times. (author abst.) |
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