Molten metal meniscus profile and mold flux channel width were measured under high frequency magnetic field by model experiments, then the dynamic pressure in mold flux channel were calculated during one mold oscillation period. It is found that the high frequency magnetic field can decrease the dynamic pressure greatly, which may be one mechanism of improving the billets surface quality by the...

Abstract In recent years, with navigation, aviation, chemical manufacturing, and automobile bodies increasing requirements for lightweight, high efficiency, energy saving, quality in the selection of materials manufacturing process are also improved. However, there is an unavoidable elastic deformation plastic bending panel veneer, accuracy workpiece impacted by spring back phenomenon, which ca...

The aim of this work was to study the interaction of corrugated and plastic materials with pathogenic and spoiling microorganisms frequently associated to fresh produce. The effect of the two packaging materials on the survival during the storage of microorganisms belonging to the species Escherichia coli, Listeria monocytogenes, Salmonella enteritidis, Saccharomyces cerevisiae, Lactobacillus p...

Numerical simulation of the injection molding process outer panel automotive plastic rear door and mold design is presented here. Computer aided three-dimensional interactive application (CATIA) employed to original steel structure, modal thermodynamic properties back are changed by changing different materials panel. In order efficiently panels, finite element analysis used verify whether desi...

The most common optimization method for the of injection mold process parameters is range analysis, but there often a nonlinear coupling relationship between molding and quality indicators. Therefore, it difficult to find optimal combination in analysis. In this article, genetic algorithm optimized extreme learning machine network model (GA-ELM) combined with (GA) was proposed optimize mold. Ta...

ali ataiyan11-expert of honeybee breeding and artificial insemination from germany, manager of alvand honeybee artificial inseminationthe usage of an open floor system hive with complete foam insulation under the hives door and a thick plastic layer prevents warm air tofloat out of the chamber or body. one of the benefits of this system includes:bees get calmed down and don’t sting much, due to...

In-mold Assembly process at the mesoscale presents several manufacturing challenges. Results reported in this paper demonstrate the technical feasibility of creating rigid body mesoscale revolute joints using In-Mold Assembly process. The following new results are reported in this paper. First, we describe a mold design with varying cavity shape to perform In-Mold Assembly. This mold design use...

In this paper, we fabricated a fluorinated organic-inorganic hybrid mold using a nonhydrolytic sol-gel process which can produce a crack-free mold without leaving any trace of solvent. No special chemical treatment of a release layer is needed because the fluorinated hybrid mold has fluorine molecules in the backbone. The other advantages of the hybrid mold are thermal stability over 300 degree...

background the importance of preserving and maintaining printed materials is crucial for the libraries. fungi play the main role in destroying wood and paper. objectives this research aimed to study and identify threatening fungal agents of library resources in isfahan university of medical sciences. materials and methods this is a descriptive analytical study. 126 samples were collected and ex...

Ultraprecision aspheric cutting process using a monocrystalline diamond tool is widely used in the manufacturing of optical components and their molds/dies. Plastic lenses are molded by injection molding an amorphous electroless Ni-P plated molds/dies decreasing lens surface roughness required. Generally, oblique one methods to decrease force burr, roughness. In this study, was applied mold mat...