Log in

Relevant bibliographies by topics / Twin rolls / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Twin rolls.

Dissertations / Theses on the topic 'Twin rolls'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 39 dissertations / theses for your research on the topic 'Twin rolls.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Santos, Josemar dos. "Controle de nível em um processo de lingotamento contínuo de tiras-rolos duplos." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-08062017-101230/.

Full text

Abstract:

O presente trabalho tem como objetivo explorar o uso de técnicas de controle avançado na indústria metalúrgica. O nível de aço é uma das variáveis mais críticas para a produção de chapas ou tiras de alta qualidade no processo de lingotamento contínuo de tiras baseados em rolos duplos. Para melhorar a qualidade da espessura das tiras utiliza-se em tanque intermediário submerso na piscina formada entre os rolos duplos. São propostas três técnicas e controle de \"fuzzy\" via modelos Mamdani e Takagi-Sugeno. O modelo Mamdani é desenvolvido com base no conhecimento experimental do processo. O model

APA, Harvard, Vancouver, ISO, and other styles

2

Monaghan, David. "Twin roll cast aluminium alloys." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357441.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Bergström, Roger. "Fibre flocculation during twin-wire roll forming." Licentiate thesis, KTH, Fibre and Polymer Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1606.

Full text

Abstract:

<p>At the division of Paper Technology a forming unitconsisting of headbox, forming roll unit and reservoir systemfor suspension recirculation has been constructed, with themain purpose to experimentally study the paper forming event byvisually following the fibre flow phenomena in the formingzone.</p><p>The effect of various running parameters upon the pressuredistribution, which is in correlation to the flow phenomenaoccuring during forming, has been studied with a flush mountedpressure sensor. Some combinations of running parametersresulted in highly oscillating pressure pulses, which weree

APA, Harvard, Vancouver, ISO, and other styles

4

Cockfield, Tracey J. "Twin-roll casting of aluminium eutectic alloys." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270607.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Alkefer, Osama. "Magnesium twin roll casting machine - modelling and control." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114504.

Full text

Abstract:

In this thesis, a laboratory scale-pilot twin roll casting plant at CANMET-MTL is considered for modelling for control synthesis. Three important parts of the plant are considered for modelling: feeding system, solidification process and deformation process. The TRC machine is multi-input multi-output (MIMO) and nonlinear in nature. A simplified 2 X 2 feedback linear dynamical model is developed based on first principles and engineering intuition due to the lack of experimental data from the TRC machine. The proposed manipulated variables are the melt inflow rate and rollers angular velocity w

APA, Harvard, Vancouver, ISO, and other styles

6

Yang, Xiaohong. "Grain refinement of twin-roll cast aluminium alloys." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358867.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Bradbury, Philip. "A mathematical model for the twin roll casting process." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296919.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Tirkes, Suha. "Hot Cracking Susceptibility Of Twin Roll Cast Al-mg Alloys." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12611202/index.pdf.

Full text

Abstract:

Increasing use of aluminum alloys in the automotive industry increases the importance of the production of sheet aluminum. To provide cost effective sheet aluminum to the industry, twin-roll casting (TRC) is becoming more important compared to DC casting. Demand for usage of different aluminum alloys in sheet form introduces some difficulties that should be considered during their applications. The main problem encountered during the welding of aluminum alloys is hot cracking. The aim of this study is to understand the difference in hot cracking susceptibility of two twin roll cast (TRC) alumi

APA, Harvard, Vancouver, ISO, and other styles

9

Saxena, Amit. "Mathematical modeling of horizontal twin roll thin strip casting process." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1392309532.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Yun, Ming. "A numerical and experimental study of the twin-roll casting process." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315792.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Parreiras, Tavares Roberto. "Vertical twin-roll caster : metal-mould heat transfer, solidification and product characterization." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0019/NQ44549.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Bayandorian, Iman. "Magnesium alloy strip produced by a melt-conditioned twin roll casting process." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/4506.

Full text

Abstract:

Twin roll casting (TRC) offers a promising route for the economic production of Mg sheet, but unfortunately, it produces strip with coarse and non-uniform microstructures and severe centre line segregation. Recently, a novel magnesium strip casting process termed melt conditioned twin roll casting (MC-TRC) was developed that, compared with the conventional TRC process, emphasizes solidification control at the casting stage rather than hot rolling. This was achieved by melt conditioning under intensive forced convection prior to twin roll casting resulting in enhanced heterogeneous nucleation f

APA, Harvard, Vancouver, ISO, and other styles

13

Miehe, Anja. "Numerical investigation of horizontal twin-roll casting of the magnesium alloy AZ31." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2014. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-149625.

Full text

Abstract:

The horizontal twin-roll casting (TRC) process is an energy saving and cost-efficient method for producing near-net-shape sheets of castable metals for light-weight production. In order to investigate the TRC process numerically, a code is generated in OpenFOAM and the commercial software STAR-CCM+ is used. Both are validated with the Stefan problem, the gallium melting test case, and a continuous casting experiment for magnesium AZ31. Different solidification models are tested that are similar to solution domain definitions and solid-fraction temperature relations. The comparison with tempera

APA, Harvard, Vancouver, ISO, and other styles

14

Kane, García William Louis [Verfasser]. "Hot rolling of twin roll cast strips – insights into product quality and roll life / William Louis Kane García." Aachen : Shaker, 2016. http://d-nb.info/1101184906/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Murakami, Hideki. "Modelling of turbulent flow, heat transfer and solidification in a twin-roll caster." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41734.

Full text

Abstract:

A computational modelling study has been undertaken for analysing the complex turbulent melt flow, involving convective and conductive heat transfer in the melt pool and the solidifying mushy-region within the wedge-shaped region of a vertical twin-roll stainless steel caster.<br>An essential feature of the model is the incorporation of the body-fitted curvilinear coordinate transformation method for correctly modelling the arbitrary shaped region of the caster in the presence of non-isothermal solidification. The model can also treat an obstacle such as a submerged nozzle within the domain. T

APA, Harvard, Vancouver, ISO, and other styles

16

Seyedein, Seyed Hossein. "Three-dimensional modeling of various slab and thin-strip twin-roll casting processes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ37023.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Másilko, Jiří. "Zvyšování odolnosti MDF kompozitů proti působení vody." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216350.

Full text

Abstract:

The subject of the diploma thesis is the study of moisture resistance of macrodefect-free (MDF) cements based on calcium-aluminate cement and polyvinylalcohol used as polymer. MDF cements are perspective materials providing unique properties relative to traditional cement pastes with great potential to incoming constructional utilization. But it is known that MDF cements exhibit sensitivity to water, with swelling and reduction of strength. Therefore the work is aimed in monitoring of an organic polymer effect on the moisture resistance of MDF materials and phase changes. Aluminate cement (SEC

APA, Harvard, Vancouver, ISO, and other styles

18

Jong, Jae Ho. "Characteristics of jet impingement, drainage and compression in a forming roll of a twin-wire machine." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/NQ41558.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Martins, Juliana de Paula. "Evolução da microestrutura e da textura durante o processamento de chapas da liga Al-Mn-Fe-Si (3003) produzidas por lingotamento contínuo: um estudo comparativo com o processo semi-contínuo." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-31012006-124433/.

Full text

Abstract:

A principal motivação para o desenvolvimento do presente projeto de doutorado foi comparar as microestruturas e texturas resultantes da liga de alumínio 3003 obtida por lingotamento contínuo e semicontínuo. O processo roll caster (lingotamento contínuo em cilindros) tem sido crescentemente utilizado na indústria de laminação de alumínio. Produtos que antes sofriam altos graus de deformação durante seu processamento são hoje obtidos nas dimensões próximas da espessura final. Com o intuito de entender este processo relativamente novo, as microestruturas e as texturas (macrotextura e microtextu

APA, Harvard, Vancouver, ISO, and other styles

20

Vidoni, Mchele [Verfasser]. "Contribution to the Development of a Process to Produce Tailored Steel Strips by Twin-Roll Strip Casting / Mchele Vidoni." Aachen : Shaker, 2016. http://d-nb.info/1118258851/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Nascimento, Renato Rosa do. "Controle não linear aplicado a processos de lingotamento contínuo de tiras." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-05062017-090446/.

Full text

Abstract:

O presente trabalho tem como objetivo explorar o uso de técnicas de controle avançados na indústria siderúrgica. Propõe-se uma estratégia de controle do nível do aço da piscina formada entre os rolos de um sistema lingotamento contínuo de tiras (LCT) utilizando a tecnologia twin-roll (rolos duplos). O processo LCT rolos duplos tem por finalidade a produção de tiras solidificadas de espessura constante sob uma força de separação entre os rolos também constante. O nível de aço bem como a força de separação são as variáveis mais críticas para a produção de tiras de aço de alta qualidade. O nível

APA, Harvard, Vancouver, ISO, and other styles

22

Miehe, Anja [Verfasser], Ulrich [Akademischer Betreuer] Groß, Ulrich [Gutachter] Groß, and Rüdiger [Gutachter] Schwarze. "Numerical investigation of horizontal twin-roll casting of the magnesium alloy AZ31 / Anja Miehe ; Gutachter: Ulrich Groß, Rüdiger Schwarze ; Betreuer: Ulrich Groß." Freiberg : Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2014. http://d-nb.info/1220698881/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Yang, Xinliang. "Particle dispersion in aluminium and magnesium alloys." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/14437.

Full text

Abstract:

High shear mixing offers a promising solution for particle dispersion in a liquid with intensive turbulence and high shear rate, and has been widely used in the chemical, food and pharmaceutical industries. However, a practical high shear mixing process has not yet been adapted to solve the particle agglomeration in metallurgy due to the high service temperature and reactive environment of liquid metal. In this study, the effect of high shear mixing using the newly designed rotor-stator high shear device have been investigated with both Al and Mg matrix composites reinforced with SiC particles

APA, Harvard, Vancouver, ISO, and other styles

24

Andersson, Ebba, and Kajsa Eckerwall. "Enabling Successful Collaboration on Digital Platforms in the Manufacturing Industry : A Study of Digital Twins." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74523.

Full text

Abstract:

Purpose – The purpose of this study is to enhance the understanding of how to successfully collaborate on digital platforms in the manufacturing industry by developing a contingency framework. To fulfill this purpose, the following research questions were derived: RQ1: Which challenges arise when collaborating on digital platforms in the manufacturing industry? and RQ2: How can collaboration challenges on digital platforms in the manufacturing industry be managed? Method – The study was conducted as an explorative, inductive single case study of a digital platform. More specifically, the study

APA, Harvard, Vancouver, ISO, and other styles

25

Berge, Franz. "Temperatur- und dehnratenabhängiges Werkstoffverhalten von warmgewalztem und abschlussgeglühtem AZ31-Gießwalzband als Funktion des Spannungszustandes." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2016. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-209405.

Full text

Abstract:

Im Rahmen dieser Arbeit wurde das Umformverhalten der gieß- und warmgewalzten Magnesiumlegierung des Mg-Al-Zn-Systems (AZ31) unter einachsiger Zugbeanspruchung in Abhängigkeit von Temperatur, Dehnrate und Entnahmerichtung untersucht. Weiterhin wurde das richtungsabhängige Grenzformänderungsverhalten im statischen sowie erstmalig im dynamischen Lastfall bei verschiedenen Temperaturen bewertet. Für die dynamischen Versuche wurde ein eigens konstruiertes Prüfmodul entwickelt und eingesetzt. Die Ergebnisse zeigen, dass sich bei einer Variation der Beanspruchungsbedingungen die Ausprägung der Verse

APA, Harvard, Vancouver, ISO, and other styles

26

Minatel, Rogério. "Um estudo comparativo sobre a recristalização de chapas de alumínio AA1200 e AA3003 obtidas por lingotamento contínuo (twin roll caster) e por fundição de placas (direct chill)." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-05062009-100623/.

Full text

Abstract:

A necessidade de redução de custos de produção torna o caster mais vantajoso que o processo de placas, porém a aplicação dos produtos obtidos via vazamento contínuo é limitada pelas condições microestruturais. A alta taxa de resfriamento no processo de vazamento, que pode ultrapassar 300 °C/s, resulta em uma condição de supersaturação dos elementos em solução sólida. Quando as chapas são recozidas, ocorre precipitação na forma de dispersóides que atrasam a recristalização. Quando o material obtido via caster segue o processo convencional de placas laminadas a quente, com recozimento intermediá

APA, Harvard, Vancouver, ISO, and other styles

27

Sakamoto, Joyce Megumi. "Exploring the roles of environmental factors and the twig beetle, Pityophthorus spp. (Coleoptera:Scolytidae) in the epidemiology of pitch canker of Pinus radiata /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Yoshikawa, Daniel Sierra. "Correlação entre microestrutura e comportamento de corrosão em duas ligas do sistema Al-Fe-Si produzidas pelos processos industriais de lingotamento contínuo e semi-contínuo." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-17062016-145633/.

Full text

Abstract:

As chapas de ligas de alumínio trabalháveis são produzidas atualmente por dois processos, o método de vazamento contínuo conhecido TRC (Twin Roll Continous Casting) ou pelo método tradicional de vazamento de placas DC (Direct Chill). A fabricação de ligas de alumínio pelos dois processos confere características microestruturais diferentes quando comparadas entre si, o que se reflete em suas propriedades. Além disto, ocorrem variações microestruturais ao longo da espessura, especialmente nas chapas produzidas pelo processo TRC. Neste sentido, é importante estudar a evolução microestrutural que

APA, Harvard, Vancouver, ISO, and other styles

29

Higgins, Alexander. "Cuties Killing Video Games: Gender Politics and Performance in Indie Game Developer Subculture." Ohio University Honors Tutorial College / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1429206684.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

張自恭. "Analysis of twin-roll casting process." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/27835049411060883287.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Mehraram, Pedram. "Measuring Heat Transfer during Twin Roll Casting of Metals." Thesis, 2010. http://hdl.handle.net/10012/5721.

Full text

Abstract:

Accurate knowledge of the heat transfer coefficient during casting (between a molten and/or semi-solid material and the mold) is critical to be able to develop representative mathematical models for casting process such as Twin Roll Casting (TRC). In this project, an experimental apparatus was developed to enable to measurement of the interfacial heat transfer coefficient (HTC) at the interface between a liquid metal as it solidifies against a chill surface. The experimental apparatus consists of a cylinder and piston surrounded by a heater to melt the metal samples. Pressure can be applied at

APA, Harvard, Vancouver, ISO, and other styles

32

Jayakrishnan, Vignesh. "Feasibility of Producing Clad Twin Roll Cast (TRC) AZ31." Thesis, 2011. http://hdl.handle.net/10012/6372.

Full text

Abstract:

The need for lighter weight vehicles to improve fuel efficiency is becoming increasingly imperative. Sheet magnesium alloys offer the potential as a light weight material for use in the transportation industry due to their high specific strength and stiffness. In fact, magnesium alloys have the highest strength-to-weight ratio of all the common structural metals. Though the demand for light weight materials is present and sheet magnesium is available, the use of these materials in automotive applications has been rather limited due to high production costs and poor corrosion performance and fo

APA, Harvard, Vancouver, ISO, and other styles

33

Liang-Yu, Yao, and 姚良瑜. "A study of Microchannel of Twin Swiss Roll Micromixer." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/61675980532793973053.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Hadadzadeh, Amir. "Mathematical Modeling of the Twin Roll Casting Process for Magnesium Alloy AZ31." Thesis, 2013. http://hdl.handle.net/10012/7230.

Full text

Abstract:

Although Twin Roll Casting (TRC) process has been used for almost 60 years in the aluminum industry, TRC of magnesium is relatively new. In TRC, molten metal is fed onto water-cooled rolls, where it solidifies and is then rolled. Solidification of the molten metal starts at the point of first metal-roll contact and is completed before the kissing point (point of least roll separation) of the two rolls. The unique thermo-physical properties inherent to magnesium and its alloys, such as lower specific heat and latent heat of fusion and larger freezing ranges (in comparison with aluminum and stee

APA, Harvard, Vancouver, ISO, and other styles

35

黃振東. "A study of twin roll strip casting process and the continuous metal sheet." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/81801499018010318745.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

"Determinação da força de separação dos rolosno processo de lingotamento de tiras (twin roll casting)." Tese, Biblioteca Digital de Tese e Dissertação da UFF, 1999. http://www.bdtd.ndc.uff.br/tde_busca/arquivo.php?codArquivo=1390.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Zimina, Mariia. "Mikrostruktura a vlastnosti lehké slitiny AZ31 připravené plynulým odléváním mezi válce." Doctoral thesis, 2016. http://www.nusl.cz/ntk/nusl-353431.

Full text

Abstract:

Title: Microstructure and mechanical properties of lightweight structural AZ31 alloy prepared by twin-roll casting method Author: Mariia Zimina Abstract: Microstructure of AZ31 twin-roll cast magnesium alloy was studied using light optical, electron and atomic force microscopy. The effect of annealing temperature on the microstructure was tested. Mechanical properties of a thin magnesium strip were investigated by means of microhardness tests and tensile tests at a relatively low strain rate 10-3 s-1 . Results show that the ductility of the twin roll cast strip increases with increasing deform

APA, Harvard, Vancouver, ISO, and other styles

38

Reilly, James Lockwood. "Identical twins concordant and discordant for schizophrenia : the roles of developmental instability and neurodevelopment in etiology /." 2003. http://wwwlib.umi.com/dissertations/fullcit/3067484.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Kittner, Kristina. "Entwicklung einer Warmwalztechnologie für Warmband einer Mg-2Zn-1Al-0,3Ca-Legierung mit hoher Umformbarkeit." 2020. https://tubaf.qucosa.de/id/qucosa%3A73743.

Full text

Abstract:

Im Rahmen der vorliegenden Arbeit wurde eine Warmwalztechnologie für gießgewalztes Vorband der calciumhaltigen Magnesiumlegierung Mg-2Zn-1Al-0,3Ca (ZAX210) entwickelt. Ausgangspunkt war die Untersuchung des Verformungs- und Rekristallisationsverhaltens in Abhängigkeit der Umformtemperatur, Umformgeschwindigkeit und des Umformgrades. Dabei wurde die zwillingsinduzierte dynamische Rekristallisation als dominierender Rekristallisationsmechanismus vor allem bei erhöhten Umformgeschwindigkeiten identifiziert. Basierend auf den daraus gewonnenen Erkenntnissen konnte ein Prozessfenster für das Warmwa

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!