The Experts below are selected from a list of 57 Experts worldwide ranked by ideXlab platform

Yanjin Guan - One of the best experts on this subject based on the ideXlab platform.

  • optimal design of heating channels for rapid heating cycle Injection mold based on response surface and genetic algorithm
    Materials & Design, 2009
    Co-Authors: Xiping Li, Yanjin Guan, Guoqun Zhao
    Abstract:

    Rapid heating cycle Molding (RHCM) technology is a novel Polymer Injection Molding method developed in recent years. In this paper, the principle of RHCM was introduced and a RHCM mold for producing a large-size LCD TV panel was presented. Aiming at achieving a uniform temperature distribution on the cavity surface of the stationary mold insert, the distances between the neighbor heating channels were considered as the main design variables. An objective function for optimizing the temperature distribution uniformity was proposed. The experiment samples for calculating the objective function were selected by using the Latin Hypercube Design experiment method. A quadric response surface equation for calculating temperature distribution uniformity was established. The design variables were optimized by using genetic algorithm and the optimal solutions were obtained. The temperature distribution uniformity on the stationary mold insert cavity surface was greatly improved. The effectiveness of the optimization method presented in this paper was also demonstrated by industrial Injection production of a LCD TV panel.

Guy Defaye - One of the best experts on this subject based on the ideXlab platform.

  • 3d study of cooling system effect on the heat transfer during Polymer Injection Molding
    International Journal of Thermal Sciences, 2010
    Co-Authors: Hamdy Hassan, Nicolas Regnier, Cedric Le Bot, Guy Defaye
    Abstract:

    The aim of the cooling system of a plastic Injection mold is to provide thermal regulation in the Injection Molding process. When the hot plastic melt enters the mold cavity, it cools down and solidifies by dissipating heat through the cooling system. To study the effect of the cooling system design on the solidification and heat transfer of Polymer by Injection Molding, a full three-dimensional time-dependent Injection Molding numerical analysis is carried out. The configuration studied consists of the mold with cuboids-shape cavity having two different thicknesses. The cooling of the Polymer material is carried out by cooling water flowing through horizontal six cooling channels. A numerical model by finite volume is used for the solution of the physical model. A validation of the numerical model is presented. The effect of the cooling channels position and their cross-section shape on the cooling process is carried out. The results indicate that, for the same cross-sectional area and coolant flow rate of the cooling channels, the cooling channels having the form rectangular perform the minimum time required to completely solidify the plastic product. They also indicate that when the cooling channels approach to the product surface, the cooling efficiency increases.

Hamdy Hassan - One of the best experts on this subject based on the ideXlab platform.

  • 3d study of cooling system effect on the heat transfer during Polymer Injection Molding
    International Journal of Thermal Sciences, 2010
    Co-Authors: Hamdy Hassan, Nicolas Regnier, Cedric Le Bot, Guy Defaye
    Abstract:

    The aim of the cooling system of a plastic Injection mold is to provide thermal regulation in the Injection Molding process. When the hot plastic melt enters the mold cavity, it cools down and solidifies by dissipating heat through the cooling system. To study the effect of the cooling system design on the solidification and heat transfer of Polymer by Injection Molding, a full three-dimensional time-dependent Injection Molding numerical analysis is carried out. The configuration studied consists of the mold with cuboids-shape cavity having two different thicknesses. The cooling of the Polymer material is carried out by cooling water flowing through horizontal six cooling channels. A numerical model by finite volume is used for the solution of the physical model. A validation of the numerical model is presented. The effect of the cooling channels position and their cross-section shape on the cooling process is carried out. The results indicate that, for the same cross-sectional area and coolant flow rate of the cooling channels, the cooling channels having the form rectangular perform the minimum time required to completely solidify the plastic product. They also indicate that when the cooling channels approach to the product surface, the cooling efficiency increases.

Xiping Li - One of the best experts on this subject based on the ideXlab platform.

  • optimal design of heating channels for rapid heating cycle Injection mold based on response surface and genetic algorithm
    Materials & Design, 2009
    Co-Authors: Xiping Li, Yanjin Guan, Guoqun Zhao
    Abstract:

    Rapid heating cycle Molding (RHCM) technology is a novel Polymer Injection Molding method developed in recent years. In this paper, the principle of RHCM was introduced and a RHCM mold for producing a large-size LCD TV panel was presented. Aiming at achieving a uniform temperature distribution on the cavity surface of the stationary mold insert, the distances between the neighbor heating channels were considered as the main design variables. An objective function for optimizing the temperature distribution uniformity was proposed. The experiment samples for calculating the objective function were selected by using the Latin Hypercube Design experiment method. A quadric response surface equation for calculating temperature distribution uniformity was established. The design variables were optimized by using genetic algorithm and the optimal solutions were obtained. The temperature distribution uniformity on the stationary mold insert cavity surface was greatly improved. The effectiveness of the optimization method presented in this paper was also demonstrated by industrial Injection production of a LCD TV panel.

Nicolas Regnier - One of the best experts on this subject based on the ideXlab platform.

  • 3d study of cooling system effect on the heat transfer during Polymer Injection Molding
    International Journal of Thermal Sciences, 2010
    Co-Authors: Hamdy Hassan, Nicolas Regnier, Cedric Le Bot, Guy Defaye
    Abstract:

    The aim of the cooling system of a plastic Injection mold is to provide thermal regulation in the Injection Molding process. When the hot plastic melt enters the mold cavity, it cools down and solidifies by dissipating heat through the cooling system. To study the effect of the cooling system design on the solidification and heat transfer of Polymer by Injection Molding, a full three-dimensional time-dependent Injection Molding numerical analysis is carried out. The configuration studied consists of the mold with cuboids-shape cavity having two different thicknesses. The cooling of the Polymer material is carried out by cooling water flowing through horizontal six cooling channels. A numerical model by finite volume is used for the solution of the physical model. A validation of the numerical model is presented. The effect of the cooling channels position and their cross-section shape on the cooling process is carried out. The results indicate that, for the same cross-sectional area and coolant flow rate of the cooling channels, the cooling channels having the form rectangular perform the minimum time required to completely solidify the plastic product. They also indicate that when the cooling channels approach to the product surface, the cooling efficiency increases.