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Dissertations / Theses on the topic 'Sand casting'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ziolkowski, Joseph Edmund. "Modeling of an aerospace sand casting process." Link to electronic thesis, 2002. http://www.wpi.edu/Pubs/ETD/Available/etd-1223102-102625.

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2

Hock, Kuah Teng. "Numerical simulation of sand casting process." Ohio : Ohio University, 1987. http://www.ohiolink.edu/etd/view.cgi?ohiou1183046313.

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3

Saleem, Muhammad Qaiser. "Helium Assisted Sand Casting of Aluminum Alloys." Digital WPI, 2011. https://digitalcommons.wpi.edu/etd-dissertations/204.

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Sand casting is the most widely used casting process for both ferrous and non-ferrous alloys; however, the process is marred by large grain size structures and long solidification times. The coarser microstructure has a negative effect on the mechanical properties of the cast components and the long processing time affects the overall productivity of the process. The research reported herein addresses these problems for aluminum sand castings by enhancing the rate of heat extraction from the casting by replacing air, which is typically present in the pores of the sand mold and has a relatively

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4

Spangler, Kimberly Hawkins. "Sand casting benchmarking questionnaire development, analysis, and participant evaluation /." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1532.

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Thesis (M.S.)--West Virginia University, 2000.<br>Title from document title page. Document formatted into pages; contains viii, 167 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 90-93).

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5

Heydari, Farhad. "Mechanisms of sand flow and compaction in core-blowing." Thesis, University of Warwick, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357857.

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6

Gourisankar, Vellapillil. "Computer modeling of parting plane problem." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/16813.

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7

Capps, Johnathon. "Advancements in vacuum process molding and casting." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Summer/master's/CAPPS_JOHNATHON_6.pdf.

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8

Tjoa, Robertus Tjin Hok Carleton University Dissertation Engineering Mechanical. "Assessment of the accuracy of a computational casting model." Ottawa, 1992.

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9

Spataro, Mark Paul. "Comparison of mechanical performance between magnesium alloy sand castings and high pressure die castings /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18378.pdf.

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10

Kambakas, Kyriakos. "Development of white cast iron matrix composites by sedimentation sand casting." Thesis, University of Surrey, 2006. http://epubs.surrey.ac.uk/843688/.

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In the work that is described in this thesis we studied a new cast iron based composite material that was produced by a double casting technique using sedimentation sand casting. The material is based on the high Cr white cast irons (WCI) 15, 20 % Cr-Mo- LC and 25 % Cr matrixes, according to ASTM A532-75a and was designed to exceed the wear life of wear resistant materials that are used in cement, mining, coal extraction and chemical and process industries currently. The working region of the material extends to a depth of 5-8 mm below the surface and is an in situ and ex situ particle reinfor

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11

Soe, Shwe Pyi. "An investigation into sand tooling methods for the production of injection moulded prototype parts." Thesis, University of Sunderland, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323121.

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12

Nyembwe, Kasongo Didier. "Tool manufacturing by metal casting in sand moulds produced by additive manufacturing processes." Thesis, Bloemfontein : Central University of Technology, Free State, 2012. http://hdl.handle.net/11462/162.

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Thesis (D. Tech. ( Mechanical Engineering )) - Central University of technology, Free State, 2012<br>In this study an alternative indirect Rapid Tooling process is proposed. It essentially consists of producing sand moulds by Additive Manufacturing (AM) processes followed by casting of tools in the moulds. Various features of this tool making method have been investigated. A process chain for the proposed tool manufacturing method was conceptually developed. This process chain referred to as Rapid Casting for Tooling (RCT) is made up of five steps including Computer Aided Design (CAD) mod

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13

Demirel, Onur. "Development Of Automobile Chassis Parts Via Aluminum Extrusion And Sand Casting Technology." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614965/index.pdf.

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Due to the environmental issues related with fuel consumption and additionally passenger safety, aluminum space frame chassis is promising a big opportunity to design a lightweight structure with a high stiffness. Despite the lower stiffness and strength of aluminum in comparison to the conventional steel chassis, it can be compensated with changing thickness and design of structure by space frame geometry In this study, instead of using steel for automobile chassis, main goal is producing a space frame structure with using aluminum in an extrusion and sand casting processes and improve the st

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14

Samonds, M. T. "Finite element simulation of solidification in sand mould and gravity die castings." Thesis, Swansea University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384446.

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15

Gullapalli, Ram A. "A Study of Mixed Manufacturing Methods in Sand Casting Using 3D Sand Printing and FDM Pattern-making Based on Cost and Time." Youngstown State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1485335857475363.

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16

Snelling, Jr Dean Andrew. "A Process for Manufacturing Metal-Ceramic Cellular Materials with Designed Mesostructure." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/51606.

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The goal of this work is to develop and characterize a manufacturing process that is able to create metal matrix composites with complex cellular geometries. The novel manufacturing method uses two distinct additive manufacturing processes: i) fabrication of patternless molds for cellular metal castings and ii) printing an advanced cellular ceramic for embedding in a metal matrix. However, while the use of AM greatly improves the freedom in the design of MMCs, it is important to identify the constraints imposed by the process and its process relationships. First, the author investigates p

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Snelling, Dean Andrew Jr. "A Process for Manufacturing Metal-Ceramic Cellular Materials with Designed Mesostructure." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/51606.

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The goal of this work is to develop and characterize a manufacturing process that is able to create metal matrix composites with complex cellular geometries. The novel manufacturing method uses two distinct additive manufacturing processes: i) fabrication of patternless molds for cellular metal castings and ii) printing an advanced cellular ceramic for embedding in a metal matrix. However, while the use of AM greatly improves the freedom in the design of MMCs, it is important to identify the constraints imposed by the process and its process relationships. First, the author investigates p

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18

Almaghariz, Eyad S. "Determining When to Use 3D Sand Printing: Quantifying the Role of Complexity." Youngstown State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1433778181.

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19

Gorsky, Daniel A. "Niyama Based Taper Optimizations in Steel Alloy Castings." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1316191746.

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20

Agacik, Ihsan Alp. "An Alternative Process Including Sand Casting, Forging And Heat Treatment Of 30mm Diameter X48crmov8-1 Tool Steel." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614962/index.pdf.

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Shear blades are mostly made of cold-work tool steels and manufactured by rolling process. Rolling process is performed not only for forming the tool but also for improving the mechanical properties. In this study, an alternative method, involving sand casting, hot forging and heat treatment processes to manufacture the shear blades, has been proposed. In the proposed method, plastic deformation will be carried out by means of forging instead of rolling. The material has been selected as X48CrMoV8-1. For both of casting and forging processes, simulations have been conducted by using Computer A

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21

Nyembwe, K., Beer D. De, der Walt K. Van, and S. Bhero. "Time and cost assessment of the manufacturing of tooling by metal casting in rapid prototyping sand moulds." Interim : Interdisciplinary Journal, Vol 10 , Issue 1: Central University of Technology Free State Bloemfontein, 2011. http://hdl.handle.net/11462/335.

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Published Article<br>In this paper the time and cost parameters of tooling manufacturing by metal casting in rapid prototyping sand moulds are assessed and comparison is made with alternative tool making processes such as computer numerical control machining and investment casting (Paris Process). To that end two case studies obtained from local companies were carried out. The tool manufacturing was conducted according to a five steps process chain referred to as Rapid Casting for Tooling (RCT). These steps include CAD modelling, casting simulation, rapid prototyping, metal casting and finishi

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22

Foley, Brian M. "A System for Detecting the Position of a Molten Aluminum Metal-Front within a Precision Sand Mold." Digital WPI, 2009. https://digitalcommons.wpi.edu/etd-theses/50.

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Manufacturers of cast metal parts are interested in the development of a feedback control system for use with the Precision Sand-Casting (PSC) process. As industry demands the ability to cast more complex geometries, there are a variety of challenges that engineers have to address. Certain characteristics of the mold, such as thick-to-thin transitions, extensive horizontal or flat surfaces, and sharp corners increase the likelihood of generating defective casts due to the turbulent metal-flow during fills. Consequently, it is critical that turbulent flow behavior within the mold be minimized

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23

Samuels, Gregory James. "Measurement of gas evolution from PUNB bonded sand as a function of temperature." Thesis, University of Iowa, 2011. https://ir.uiowa.edu/etd/1260.

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The chemical binders used to make sand molds and cores thermally decompose and release gas when subjected to the high temperature conditions in sand casting processes. Computational models that predict the evolution of the binder gas are being introduced into casting simulations in order to better predict and eliminate gas defects in metal castings. These models require knowledge of the evolved binder gas mass and molecular weight as a function of temperature, but available gas evolution data are limited. In the present study, the mass and molecular weight of gas evolved from PUNB bonded sand

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24

Jorapur, Nikhil Sudhindrarao. "Design, Fabrication and Testing of Fiber-Reinforced Cellular Structures with Tensegrity Behavior using 3D Printed Sand Molds." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/84531.

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The overall goal of this work is to improve the structural performance of cellular structures in bending applications by incorporating tensegrity behavior using long continuous fibers. The designs are inspired by the hierarchical cellular structure composition present in pomelo fruit and the structural behavior of tensegrity structures. A design method for analyzing and predicting the behavior of the structures is presented. A novel manufacturing method is developed to produce the cellular structures with tensegrity behavior through the combination additive manufacturing and metal casting tech

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25

Schaub, Henning. "Comparison of different aluminium casting processes from an environmental perspective : Case study on plaster mould castings produced in Mid Sweden." Thesis, Mittuniversitetet, Avdelningen för ekoteknik och hållbart byggande, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-35659.

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While Aluminium has lots of unique properties and is seen as a material of the future, its production and manufacturing has significant environmental impacts. For complex and dimensional shapes casting remains the main manufacturing method and in this study the environmental pressure of different casting techniques is compared. A screening LCA is conducted to determine the environmental impacts of plaster mould castings in a case study at the Ventana Hackås AB foundry in Mid Sweden. The findings are compared to models of sand, pressure die and lost wax castings, based on literature datasets. T

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26

Ahmad, Nadiah. "Riser Feeding Evaluation Method for Metal Castings Using Numerical Analysis." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1447845668.

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27

Farhang, Mehr Farzaneh. "Quantitative assessment of the effect of copper chills on casting/chill interface behavior and the microstructure of sand cast A319 alloy." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43592.

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Although the demand for A319 alloy has increased in recent years, thermal fatigue resistance of the alloy is still one of the most important challenges in engine applications, especially in the newer generation of engines in which cylinder spacing has been reduced. According to the previous studies there are several parameters that improve thermal fatigue resistance such as: low SDAS, fine grain size, low porosity level, and low intermetallic content. Cooling rate has a direct effect on the shape, size, and distribution of the microstructural phases, as well as on the scale of the dendrites, a

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28

Rodomsky, Caitlyn Marie. "Surface Finish on A356-T6 Cast Parts using Additive Manufactured Sand Molds." Youngstown State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1526030093287334.

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29

Lu, Yan. "Predicting and Validating Multiple Defects in Metal Casting Processes Using an Integrated Computational Materials Engineering Approach." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1562346439311635.

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30

Cimatti, Federico. "Progettazione del processo fusorio per la realizzazione di cilindro per motore a combustione interna a due tempi." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16429/.

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Progettazione di un cilindro per motori a combustione interna a due tempi, da impiegarsi come parte di ricambio per propulsori monomarcia costruiti da Piaggio s.p.a. e da Motori Minarelli s.p.a. Approfondimenti su scelta del materiale (lega di alluminio), definizione del processo fusorio, analisi FEM della colata, nonché sulla costruzione delle attrezzature necessarie alla messa in produzione.

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31

Prada-Echevarría, Luz, Jorge Chinchay-Grados, Fernando Maradiegue-Tuesta, and Carlos Raymundo. "Production Control Model Using Lean Manufacturing Tools and Kanban/CONWIP Systems to Improve Productivity in the Process of Sand Casting in a Heavy Metalworking SME." Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/653783.

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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.<br>The contribution of the metalworking sector to the gross domestic product is decreased by 8.6% in the 2017–2018 period because of problems such as high rejection rates, lead times, and raw material losses. Consequently, the sector’s production was reduced by PEN 1,200,000 while demand remained flat. Thus, this article proposes a production control model using 5S, Single-Minute Exchange of Dies, and tools such as Kanban and Constant Work-in-Prog

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32

Mitra, Saptarshee. "Experimental and numerical characterization of functional properties of sand molds produced by additive manufacturing (3D printing by jet binding) in a fast foundr." Thesis, Paris, ENSAM, 2019. http://www.theses.fr/2019ENAM0043.

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Les techniques traditionnelles pour la production des moules et des noyaux en sable utilisés en fonderie pour la coulée de métaux sont actuellement en cours de remplacement par des méthodes de fabrication additive, afin d'aider l’industrie aérospatiale/automobile à fabriquer des pièces de forme complexe d'une manière pratique. Le but de ce travail de recherche est d'étudier les propriétés fonctionnelles des moules imprimés en 3D utilisés lors de la coulée des pièces de forme complexe pour des applications d'ingénierie. Premièrement, le comportement mécanique des moules en sables imprimés en 3D

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33

Kålås, Øystein Heden. "Patternless direct moulding of sand castings." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produktutvikling og materialer, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12957.

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34

Lindqvist, Olle, and Gustaf Thulin. "Gjutning av rostfritt stål med 3D-printade sandformar." Thesis, Uppsala universitet, Industriell teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-413840.

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Sand mold casting is a manufacturing method that has been used for thousands of years. In recent years additive manufacturing has, among other things, enabled production of sand molds with complex geometry resulting in castings with geometry that would have been very hard, if not impossible, to produce with conventional sand mold casting or machining procedures. Since this manufacturing method is relatively new, knowledge gaps exist regarding the benefits and drawbacks of the method as well as when it should be used. The purpose of this study has been to explore casting molds produced by addit

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35

Jomaa, Ghassan. "Étude des dégagements gazeux survenant pendant la coulée de pièces d’Aluminium." Thesis, Paris, ENMP, 2014. http://www.theses.fr/2014ENMP0068.

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La fabrication de pièces automobiles en aluminium des formes complexes telles que les culasses de moteur par le procédé de fonderie est effectuée par l'insertion de noyaux en sable durci par des résines (liants) organiques dans un moule métallique et la coulée d'un métal en fusion dans ce moule. Sous l'effet de la température élevée du métal, les résines organiques se décomposent et produisent des dégagements gazeux qui altèrent la qualité des pièces à fabriquer. Jusque tout récemment, la maîtrise des dégagements gazeux survenant pendant le procédé du moulage était basée sur des essais expérim

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36

Hermansson, Jakob, and Emma Wahlström. "Materialval för minskat slitage av sandformningsverktyg." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-13776.

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På Volvo Group Trucks Operations (GTO) i Skövde tillverkas cylinderblock, cylinderhuvud och svänghjul genom gjutning med sandformar. Då formverktygen som formar sandformarna fylls uppkommer slitage där sandpartiklarna träffar, vilket leder till att formverktygen behöver underhållas regelbundet.Målet med denna studie är att hitta alternativa material som formverktygen kan tillverkas i alternativt förstärkas eller beläggas med för att minska slitaget i formverktygen och på så sätt minska kostnader genom att förlänga underhållsintervallen. Problemet analyseras och en litteraturstudie kring erosiv

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37

Blaha, Marek. "Optimalizace výroby litinových odlitků za účelem snížení výskytu vad." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231936.

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The presented diploma thesis is focused on defects of castings as well as optimization of production with the aim of reducing the number of defective products. The theoretical part is focused on basic information about cast iron and its production, structure and mechanical properties. Another part of this thesis describes the defects of castings and options for non-destructive testing of cast iron castings. In the experimental part are analyzed three sorts of defective casting. Castings for testing were provided by JMA s.r.o. foundry. The summary contains tests results and proposals for optimi

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38

Vašek, Vojtěch. "Použití modelů zhotovených technologii 3D tisku při výrobě odlitků do bentonitových forem na formovací lince." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-319282.

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Shortening of the time required to make first product after demand is a crucial factor in every field of industry, not excluding the foundry. To lower this delay, there are rapid prototyping methods. The aim of this thesis is to execute an experiment and then evaluate possibilities of using patterns made by 3D FDM printer on an automatic molding line.

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39

Bargaoui, Hiba. "Simulation de la déformation des noyaux de fonderie durant la coulée." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEM004/document.

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Les cavités intérieures des culasses d'aluminium sont réalisées à l'aide de noyaux de sable, qui sont constitués d'un mélange de silice et d'une résine Polyuréthane. Ils sont placés dans le moule métallique juste avant la coulée. Durant celle-ci, ils subissent la pression métallo-statique et sont soumis à des températures élevées. Sous ces conditions extrêmes, avec l'apparition de parois de plus en plus fines et de formes plus complexes, les noyaux peuvent présenter des déformations qui induisent des défauts dimensionnels sur les pièces finales.Pour contrôler la déformation des noyaux, il faut

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40

Galles, Daniel Joseph. "Prediction of distortions and pattern allowances in steel sand castings." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/2077.

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Modeling the thermomechanical behavior of the bonded sands used for steel sand casting is of great importance for the prediction of distortions and pattern allowances. In this study, distortions created by mechanical interactions between the casting and sand mold are measured from two experimental setups and then predicted by finite element stress analyses. The casting geometries involve a hollow cylinder for the first experiment and U-shaped bracket for the second. The temporal evolutions of 1) the cylinder’s inner diamet

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Souza, Josiane Carneiro. "REUTILIZAÇÃO DE AREIA A VERDE DESCARTADA DE FUNDIÇÃO LIGADA COM Na2SiO3.XH2O/CO2 NA PREPARAÇÃO DE MOLDES NÃO PERMANENTES." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2012. http://tede2.uepg.br/jspui/handle/prefix/1425.

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Made available in DSpace on 2017-07-21T20:42:39Z (GMT). No. of bitstreams: 1 Josiane Carneiro Souza.pdf: 4154319 bytes, checksum: dcde979ba587a2471aa62c75df7e7827 (MD5) Previous issue date: 2012-12-19<br>Fundação Araucária de Apoio ao Desenvolvimento Científico e Tecnológico do Paraná<br>The manufacture of metal parts by molding and molded by the process in the green sand (sand base crowded with clay) is widespread in industries for its low cost and operational flexibility. A major advantage is that the materials can be reused in new molding cycles. However, when the liquid metal comes in co

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42

Petzold, Lukas. "Gefüge-Eigenschaftsrelationen dünnwandig erstarrter Eisenlegierungen." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2011. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-67668.

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Gegenstand der Arbeit ist die Untersuchung der Gefügebildung dünnwandig erstarrter Eisenlegierungen und deren Auswirkung auf die mechanischen Eigenschaften. Die Arbeit ist in zwei Teile untergliedert. Im experimentellen Teil wurden Stahlgusslegierungen unter Variation ihrer Zusammensetzung erschmolzen und in Quarzsandformen vergossen. Das erhaltene Probenmaterial wurde im Gusszustand sowie nach optional angewendeten Wärmebehandlungen untersucht. Die Abhängigkeiten zwischen chemischer Zusammensetzung, Gefügeausbildung und mechanischen Eigenschaften wurden quantitativ dargelegt. Der Modellierung

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43

Nováková, Lucie. "Snížení nákladů na výrobu odlitků ze slitin hliníku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-228993.

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This thesis deals with solving the most serious internal defects in castings made of aluminum alloys which are cast in sand molds in Slévárna a modelárna Nové Ransko Ltd. The problem solving contains a description of the problematic castings with the investigation of the structure and phases and subsequent detailed analysis of their production. The Author of this thesis also examines the influence of Fe and Mn on a possible formation of the internal porosity with the help of test meltings with the evaluation of the internal structural change. The Author’s design solution is a close checking of

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44

Jomaa, Ghassan. "Étude des dégagements gazeux survenant pendant la coulée de pièces d’Aluminium." Electronic Thesis or Diss., Paris, ENMP, 2014. http://www.theses.fr/2014ENMP0068.

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La fabrication de pièces automobiles en aluminium des formes complexes telles que les culasses de moteur par le procédé de fonderie est effectuée par l'insertion de noyaux en sable durci par des résines (liants) organiques dans un moule métallique et la coulée d'un métal en fusion dans ce moule. Sous l'effet de la température élevée du métal, les résines organiques se décomposent et produisent des dégagements gazeux qui altèrent la qualité des pièces à fabriquer. Jusque tout récemment, la maîtrise des dégagements gazeux survenant pendant le procédé du moulage était basée sur des essais expérim

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45

Staňková, Markéta. "Hodnocení porezity u odlitků gravitačně litých z Al slitin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228043.

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Solving of this diploma thesis is evaluation porosity in sequence on mechanical properties from different Al alloys. Castings were made by gravity casting to the iron-mould or gravity casting to the sand. Measurements (mechanical properties, porosity, DAS - dendrite arm spacing, shape factors and sphericity) were statistically analysed and dependencies which were detected were processed to the graphs.

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Moosbrugger, John C. "Numerical computation of metal/mold boundary heat flux in sand castings using a finite element enthalpy model." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/16365.

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Скрипник, О. В., В. В. Клименко, В. В. Свяцький та ін. "Перспективи розвитку способу виготовлення піщаних форм по льодяним моделям". Thesis, ЦНТУ, 2017. http://dspace.kntu.kr.ua/jspui/handle/123456789/7032.

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Розглянуто застосування кріогеніки для одержання металевих виливків у піщаних формах для реалізації маловідходної і безвідхідної технології з повторним використанням формувальних матеріалів. The use of cryogenics for metal castings production in sand forms for the implementation of low-waste and non-waste technology with the repeated use of molding materials is considered.

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Descamps, Michel. "Le Coulage en bande et ses applications. Influence des caractéristiques granulaires des poudres céramiques sur les propriétés des bandes." Valenciennes, 1996. https://ged.uphf.fr/nuxeo/site/esupversions/a11c962c-8384-4282-a070-bba98c0d7a5d.

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L'évolution des propriétés physiques, mécaniques et de surface de matériaux élaborés par coulage en bande (AlN, Al#2O#3) est étudiée en fonction de la concentration de la phase organique utilisée et des caractéristiques poreuses de la bande (volume poreux, diamètre des pores ouverts). Ces propriétés sont régies par les propriétés intrinsèques de la phase organique, le taux de remplissage de la structure poreuse par les composés organiques et le diamètre de la porosité ouverte. Une application originale du coulage en bande est montrée au travers de l'élaboration de cibles d'oxydes multicouches,

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Palma, Cruz Blanca Marlen Anaid. "Acción colectiva e instituciones en el uso, acceso y castigo de los recursos forestales maderables en la comunidad de San Francisco Tlalcilalcalpan." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2015. http://hdl.handle.net/20.500.11799/25597.

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Contiene esquemas, tablas e imágenes del lugar<br>Ante esta problemática, surge la propuesta del manejo institucional de los recursos con base comunitaria, que trata de establecer un vínculo directo entre los objetivos de conservación y las necesidades locales al implementar reglas de uso que especifiquen formas de extracción y aprovechamiento, sin embargo, un verdadero manejo sustentable de los recursos requiere de un enfoque más incluyente y complejo, que vincule sin excepción a todos los niveles de organización política y no sólo al comunitario. A partir de esta noción, el presente trabajo

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Guillen, Gabrielle S. "Daughters of the Alcaldes: Women of Privilege in Medieval Burgos." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1399563719.

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