Investigation of erosion wear performance and mechanism of mold materials / Ben Jiang in INTERNATIONAL POLYMER PROCESSING, Vol. 38, N° 4 (2023)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. 38, N° 4 (2023) . - p. 528-537 Titre : Investigation of erosion wear performance and mechanism of mold materials Type de document : texte imprimé Auteurs : Ben Jiang, Auteur ; Ming Zhai, Auteur Année de publication : 2023 Article en page(s) : p. 528-537 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse de dommages (matériaux) Modèles numériques Moules d'injection -- Détérioration Simulation par ordinateur Index. décimale : 668.4 Plastiques, vinyles Résumé : The surface of an injection mold is prone to erosion and wear under the impact of the filler during plastics injection molding, which leads to premature failure of the mold. The mechanism of erosion and wear of a filler on the mold has not been clarified yet. A numerical technique was employed to simulate the erosion and wear process, and the influence of environmental parameters and particle characteristics, such as erosion velocity, erosion angle, temperature, and particle shape were studied. The results showed that the erosion velocity and erosion angle are important factors that affect erosion and wear. Finally, the relationship between change of particle energy and erosion and wear of the material is studied from the perspective of energy. Note de contenu : - Numerical model - Results and discussion : Analysis of erosion process - Influencing factors of erosion wear - Key factors affecting the erosion rate - Energy changes during erosion - Table 1 : Material properties of 45 steel - Table 2 : Material properties of glass fiber - Table 3 : Finite element meshing - Table 4 : Level factor setting table - Table 5 : Four-factor three-level orthogonal experiment table - Table 6 : Erosion wear simulation results - Table 7 : Effect of erosion factors on experimental results - Table 8 : Contribution rate of erosion factors to erosion rate DOI : https://doi.org/10.1515/ipp-2022-0014 En ligne : https://drive.google.com/file/d/1WZaPV_dY0zO9vSaK3Cm5QLbhjNKUFwhq/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40114 [article]

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Investigation of the structural robustness of deep depth injection mold with cavity pressure and mold design / S.-Y. Park in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 5 (11/2014)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 5 (11/2014) . - p. 616-623 Titre : Investigation of the structural robustness of deep depth injection mold with cavity pressure and mold design Type de document : texte imprimé Auteurs : S.-Y. Park, Auteur ; M.-Y. Lyu, Auteur Année de publication : 2014 Article en page(s) : p. 616-623 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse structurale (ingénierie) Endommagement (mécanique) Matériaux -- Fissuration Moules d'injection -- Détérioration Index. décimale : 668.9 Polymères Résumé : High pressure is involved during injection molding operation, especially in the packing phase. Cracks in the mold often occur as a result of high cavity pressure. In this study, the structural analysis of an injection mold was performed to investigate the stress concentration in injection mold. The structural analysis included stress distributions and stress concentration according to cavity pressures and mold designs. The causes of cracks were investigated through the computational results for stress concentration locations and the magnitude of stress. Two commercial programs were used and various boundary conditions were applied to obtain reliable results. This study found that the locations of high stress concentrations were coincident with the locations of cracks and that the weak mold design was responsible for these cracks. Mold designs such as interlocking designs exerted a strong influence on the robustness of the mold. It was verified that the analysis method used in this study can be applied to evaluate the robustness of injection molds. Note de contenu : - EXPERIMENT AND ANALYSIS OF CAVITY PRESSURE : 1. Experimental model - 2. Observation of cracks inside the mold - 3. Measurement and prediction of internal cavity pressure - RESULTS AND STRUCTURAL ANALYSIS OF MOLD : 1. Analysis according to size of internal cavity pressure - 2. Analysis base on changes in the boundary conditions - 3. Analysis based on mold design DOI : 10.3139/217.2947 En ligne : https://drive.google.com/file/d/1Yn5xJnegkXa0Hy7NtyR39f4kLt43gpdv/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22228 [article]

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