Relevant bibliographies by topics / Lost foam casting. Heat Polystyrene

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Lost foam casting. Heat Polystyrene'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Lost foam casting. Heat Polystyrene"

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Matson, Douglas M., Rakesh Venkatesh, and Scott Biederman. "Expanded Polystyrene Lost Foam Casting—Modeling Bead Steaming Operations." Journal of Manufacturing Science and Engineering 129, no. 2 (2006): 425–34. http://dx.doi.org/10.1115/1.2540608.

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The retention of pattern voids observed in the production of expandable polystyrene patterns for lost foam casting can be traced to conditions developed during mold filling and subsequent steaming. Void formation and closure, or healing, was observed using high-speed video imaging through a clear acrylic sheet cut to match one-half of a test pattern mold. Two processing conditions, i.e., the initial bead packing density and the velocity of steam as it passes between beads, were shown to significantly impact the ability of a void to heal during steaming. A model is proposed to predict condition
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Shalevskaya, I. A. "Research of heat-exchange processes in a casting form with reinforcing phase." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 3 (October 16, 2019): 54–59. http://dx.doi.org/10.21122/1683-6065-2019-3-54-59.

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The method of lost foam casting with the reinforcing phase installed inside the polystyrene foam model is considered as a basic technological process. In The new multicomponent systems for the theory of foundry processes will be created in this case: «metal–model–implant–mold» and «metal–reinforcing phase–mold». The influence of the installed macroreinforcing elements in the form of steel rods on the heat and mass transfer was researched, solidification and hydrodynamics is investigated. The process was modeled using the ProCast program by evaluating the solidification conditions in the sand c
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Zhao, Zhong, and Zi Tian Fan. "Influence of Vibration on the Heat Transfer of Lost Foam Casting Filling." Advanced Materials Research 418-420 (December 2011): 1618–21. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.1618.

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The vibration is superimposed to the filling process of aluminum and magnesium alloy in lost foam casting, and the flow lengths and the molten metal temperatures of the flow front are collected, and they compared with no-vibration. The results show that the vibration can significantly improve the filling capacity of the aluminum alloy, magnesium alloy in lost foam casting. Compared to the samples without vibration, the flow lengths of A356 alloy with vibration in lost foam casting increased by 33% and that of AZ91D alloy increased by 15%.The heat transfer of molten metal on the flow front was
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Zhou, Jian, Li Jun Li, Jian Wen Yi, and Ming Yang. "Lost Foam Casting of Hydroturbine Blades Based on CAE." Applied Mechanics and Materials 71-78 (July 2011): 694–97. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.694.

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The article studies the method which hydroturbine part is manufactured by lost foam casting for obtaining higher quality product.The lost model material is polystyrene foam plastics,the EPS diameters are selected in 0.5-0.76mm,the casting raw material is lower carbon martensite stainless steel(ZG06Cr13Ni4Mo).The style of open pouring system is adopted, ∑Fin-gate：∑Fcross-gate：∑Fdown-sprue=1：1.1：1.2, fireproof coating is mixed and coated,square sand box is used. The pouring temperature of liquid is 1600-1650°C.If the technology is strictly according to the design,good quality casting can be gott
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Sulaiman, Shamsuddin, M. K. A. M. Ariffin, S. H. Tang, and A. Saleh. "Influence of Pattern Coating Thickness on Porosity and Mechanical Properties of Lost Foam Casting of Al-Si (LM6) Alloy." Applied Mechanics and Materials 300-301 (February 2013): 1281–84. http://dx.doi.org/10.4028/www.scientific.net/amm.300-301.1281.

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The combination of Aluminum alloy with lost foam casting (LFC) process is best applied in automotive industry to replace steel components in order to achieve light weight components for reducing fuel consumption and to protect the environment. The LFC process involves process parameters such as the degree of vacuum, foam degradation, expanded polystyrene (EPS) foam density, permeability of foam pattern coatings, pouring temperature, filling velocity, cooling rate, and pressure. The effect of polystyrene foam pattern coating thickness on the porosity and mechanical properties of Aluminum Al-Si
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Marukovich, E. I., A. M. Branovitskiy, A. A. Kruglov, V. A. Dement’ev, and N. P. Sadovskiy. "PRODUCTION OF ROTARY ENGINES’ PARTS FROM ALUMINUM ALLOYS USING LOST FOAM CASTING PROCESS." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 1 (April 6, 2018): 16–21. http://dx.doi.org/10.21122/1683-6065-2018-1-16-21.

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The production technology of casting details for rotary engine from the aluminum alloy АК12М2 is developed. The bulk density of expanded polystyrene to ensure the best quality of the surface of castings has been experimentally established. The lost foam casting shop was organized in the experimental department of the Institute.
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Pletka, J., and J. Drelich. "Recovery of expanded polystyrene from coated patterns rejected from lost foam casting." Mining, Metallurgy & Exploration 19, no. 1 (2002): 25–30. http://dx.doi.org/10.1007/bf03402897.

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Jagoo, S., Comondore Ravindran, and Dennis Nolan. "Fold Defects in Aluminum Alloy A356 Lost Foam Casting." Advanced Materials Research 15-17 (February 2006): 1–6. http://dx.doi.org/10.4028/www.scientific.net/amr.15-17.1.

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In the lost foam casting (LFC) of aluminum alloys, the expandable polystyrene (EPS) foam characteristics (foam composition, polymer processing and bead fusion) influence the formation of deleterious fold defects in the final casting. In this research, four types of EPS beads were investigated: (1) the regular EPS beads, (2) 2wt% hexabromocyclododecane and 2wt% dicumyl peroxide added to the EPS beads during the polymerization process, (3) 2wt% silicaalumina blended to EPS beads after the pre-expansion process of the beads and (4) 2wt% hexabromocyclododecane blended to EPS beads after the pre-ex
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Jezierski, Jan, Michał Jureczko, and Rafał Dojka. "The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) Method." Metals 10, no. 8 (2020): 1022. http://dx.doi.org/10.3390/met10081022.

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The purpose of this paper was to analyze the process factors affecting the occurrence of lustrous carbon defects in ductile cast iron castings when using the lost-foam casting (LFC) method. This phenomenon results in creating raw surface defects, which sometimes may even lead to cast iron scrapping. A series of trial melting batches were carried out for variable process assumptions. The analysis was performed to reflect, to the greatest extent possible, real foundry production conditions. Industrial tests were performed in Odlewnia Rafamet Sp. z o.o., Kuźnia Raciborska, Poland. The polystyrene
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Chen, Zhi Lan, and Ren Wei Yang. "Numerical Simulation of Lost Foam Casting in Special-Shaped Stainless Steel Stirrer." Applied Mechanics and Materials 101-102 (September 2011): 479–83. http://dx.doi.org/10.4028/www.scientific.net/amm.101-102.479.

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The filling process, solidification process, gasification process and node temperature change of special-shaped stainless steel stirrer via lost foam casting was simulated and analyzed by using ProCAST numerical simulation techniques. The results show that the filling and foam gasification process of stainless steel stirrer casting is a top-down, from the middle layers of outward promotion process. In the filling process, foam pattern gasification and decomposition appeared to be exacerbated by heat transfer in the whole casting. Through the node temperature change over time, it can be conform
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Dissertations / Theses on the topic "Lost foam casting. Heat Polystyrene"

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Liu, Xuejun Bhavnani S. H. "Experimental and computational study of fluid flow and heat transfer in the lost foam casting process." Auburn, Ala., 2005. http://hdl.handle.net/10415/1270.

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Kannan, Pravin. "Physicochemical studies of expandable polystyrene beads and foam as applicable in lost foam castings a dissertation presented to the faculty of the Graduate School, Tennessee Technological University /." Click to access online, 2009. http://proquest.umi.com/pqdweb?index=18&sid=1&srchmode=1&vinst=PROD&fmt=6&startpage=-1&clientid=28564&vname=PQD&RQT=309&did=1756870151&scaling=FULL&ts=1250798704&vtype=PQD&rqt=309&TS=1250798717&clientId=28564.

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Sen, Indraneel. "Degradation Mechanism of Expanded Polystyrene (EPS) Foam in Lost Foam Casting, PIPS Approach for Synthesis and Novel Expansion Techniques for Cellular Foam." 2007. http://trace.tennessee.edu/utk_graddiss/299.

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Lost Foam Casting (LFC) is a metal casting technology that facilitates fabrication of near-net shape metal castings using expanded polystyrene (EPS) foam patterns that are coated with refractory slurry and is effective for producing aluminum or iron castings of complicated geometry. However, the LFC process can produce considerable amount of scrap due to casting defects. Removing the EPS thermal decomposition products through the ceramic coating ahead of the advancing metal front during the liquid metal pour is a key factor in obtaining a defect free casting. Developing a fundamental understan
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Book chapters on the topic "Lost foam casting. Heat Polystyrene"

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Nagata, Fusaomi, Akimasa Otsuka, Keigo Watanabe, Maki K. Habib, and Takamasa Kusano. "Industrial Machining Robot with Incorporated Robotic CAM System." In Advances in Computational Intelligence and Robotics. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-7387-8.ch025.

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This chapter first describes the robotic CAM system proposed from the viewpoint of robotic servo controller for an industrial robot RV1A. Then, a reverse post-processor is proposed for the robotic CAM system to online generate the original CL data from the NC data post-processed for a five-axis NC machine tool with a tilting head. Next, an application of the industrial robot with incorporated the robotic CAM system is introduced. The application is developed to efficiently machine foamed polystyrene patterns which are typically used for master pattern of sand mold or for lost-foam pattern for full mold casting (i.e., lost-foam casting). If the target material is limited to such foamed polystyrenes, it is expected that the developed machining robot is superior to conventional NC machine tools in terms of introduction cost, running cost, compactness, and easiness of use. Finally, promising machining results of foamed polystyrene materials are shown.
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Conference papers on the topic "Lost foam casting. Heat Polystyrene"

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Liu, X. J., S. H. Bhavnani, and R. A. Overfelt. "Measurement of Kinetic Zone Temperature and Heat Transfer Coefficient in the Lost Foam Casting Process." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59348.

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A thermometric technique has been developed to study the thermal characteristics of the foam-metal interaction in the lost foam casting process. A cylindrical foam pattern and heated steel block have been used to estimate the endothermic losses associated with the thermal degradation of the expanded polystyrene at the metal front. Thermocouple readings have been analyzed to determine the temperature of the kinetic zone between the advancing metal front and the receding foam pattern. The heat transfer coefficient between the metal front and the foam pattern has been calculated from the thermal
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Liu, X. J., S. H. Bhavnani, and R. A. Overfelt. "Numerical Modeling of EPS Foam Decomposition in the Lost Foam Casting Process." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81471.

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The importance of smooth mold filling in the lost foam casting process has been recognized for a long time. The more uniform the filling process, the better the quality of the casting products that are produced. Successful computer simulations can help reduce the number of trials and cut down the lead time in the design of new casting products by better understanding the complex mechanisms and interplay of different process parameters in the mold filling process. In this study, a computational fluid dynamics (CFD) model has been developed to simulate the fluid flow of molten aluminum and the h
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Liu, X. J., S. H. Bhavnani, and R. A. Overfelt. "The Effects of Foam Density and Metal Velocity on the Heat and Mass Transfer in the Lost Foam Casting Process." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47504.

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As an innovative technique, the lost foam casting (LFC) process has drawn great attention from both academia and industry in recent years. The key feature of LFC process is that a desired shape pattern made of expandable polystyrene (EPS) foam is buried in unbonded sand and replaced by advancing molten metal. The heat and mass transfer between the molten metal front and the EPS foam pattern plays an important role in the soundness of the product in the LFC process. The present study focuses on determining the characterization of heat and mass transfer during the EPS pattern degradation process
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Blaser, Peter J., Dale M. Snider, Ken A. Williams, Alan E. Cook, and Mark Hoover. "Process Modeling: Lost-Foam Pattern Filling." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60483.

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A transient, three-dimensional, multi-phase particle-in-cell approach is used to solve for the flow of polystyrene beads in complex three dimensional geometries which represent patterns used for lost-foam casting. The numerical method solves the gas conservation equations on an Eulerian grid and the motion of polystyrene beads is calculated in a Lagrangian frame of reference. The true particle size distribution is modeled, and the particle flow ranges from dilute to close-pack. Predicted fill behavior is compared to experimentally blown patterns using colored beads and to the measured transien
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Wall, K. F., S. H. Bhavnani, R. A. Overfelt, D. S. Sheldon, and K. Williams. "Two-Phase Flow Characterization of an Expandable Polystyrene Injector for Use in the Lost Foam Casting Process." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33691.

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A significant portion of casting defects in the Lost Foam Casting process can be traced back to a lack of consistency in the Expandable Polystyrene (EPS) foam pattern. The present study focuses on determining the cause of EPS foam pattern irregularities through the characterization of the two-phase flow of an EPS bead injector. The process variables studied during this experiment include fill time, fill pressure, EPS bead canister pressure, and fill hose diameter. It was found that the air flow rate under vented EPS bead canister condition using a 1.9 cm (3/4 inch) diameter fill hose increases
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Shayganpour, A., M. H. Idris, S. Izman, and S. Farahany. "Effects of pouring temperature and slurry viscosity on heat transfer and surface roughness in lost foam casting." In THE 4TH INTERNATIONAL MEETING OF ADVANCES IN THERMOFLUIDS (IMAT 2011). AIP, 2012. http://dx.doi.org/10.1063/1.4704345.

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Arjmandi Tash, Hadi, Morteza Sadeghi, Arash Ranjbaran, and Esmaeel Esmaeel Zadeh. "Dimensional Analysis to Predict Dynamic Behavior of Sand Bulk Under 2D Vibration." In ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/fedsm2008-55004.

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2D motion pattern of an especial type of sand, which is used in lost-foam casting process, under the horizontal vibration investigated. Under this condition, the sand bulk in the experiment cell divides into 3 different zones, every one has its own property. Using dimensional analysis for the first time for this problem, dimensionless parameters which are useful to study sand bulk behavior, were identified. It observed that simple and linear relations exist among these parameters. They can be utilized in formulizing this phenomenon, by which motion pattern of sand bulk in various conditions ca
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