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master's thesis
Izrada alata za školjkasti lijev
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. urn:nbn:hr:235:730552
Ivković, Josip
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Ivković, J. (2014). Izrada alata za školjkasti lijev (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:730552

Ivković, Josip. "Izrada alata za školjkasti lijev." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. https://urn.nsk.hr/urn:nbn:hr:235:730552

Ivković, Josip. "Izrada alata za školjkasti lijev." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. https://urn.nsk.hr/urn:nbn:hr:235:730552

Ivković, J. (2014). 'Izrada alata za školjkasti lijev', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 21 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:730552

Ivković J. Izrada alata za školjkasti lijev [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2014 [cited 2024 December 21] Available at: https://urn.nsk.hr/urn:nbn:hr:235:730552

J. Ivković, "Izrada alata za školjkasti lijev", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:235:730552

Metadata
TitleIzrada alata za školjkasti lijev
Title (english)Tool production for shell-mold casting
AuthorJosip Ivković
MentorBranko Bauer (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2014-12-04, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Rad se sastoji od dva dijela: teorijskog i eksperimentalnog. Svojstva i primjena školjkastog lijeva opisani su u teorijskom dijelu. Detaljnije su opisani dijelovi oko izrade alata i izrade školjki. TakoĎer su prikazani načini grijanja alata i izrade školjke te utjecaj na oblik školjke i moguće greške. Legura AlSi koja se koristila pri lijevanju u eksperimentalnom dijelu rada ukratko je opisana uz pregled mehaničkih svojstava. Eksperimentalni dio rada opisuje konstrukciju i izradu alata za školjkasti lijev, izdradu školjke te lijevanje kako bi se dobio odljevak, epruveta. Nacrtan je CAD model odljevka te je izvršena simulacija u QuikCAST softveru, a na temelju rezultata simulacije izraĎen je alat. Ispitani su parametri utjecaja vremena pečenja i temperature alata na debljinu stijenke i dimenzijsku točnost školjke. Odljevci su rentgenski snimljeni i napravljen je statički vlačni pokus. Dobiveni su odljevci bez poroznosti, ali je u dvije epruvete uočen uključak pijeska koji je uzrokovao pad vlačne čvrstoće ispod vrijednosti propisane normom.
Abstract (english)
This work contains of two part: theoretical and experimental. Properties and application od shell moulding process are described in theoretical part. Construction of pattern and shell is described in detail. Methods of pattern heating, making of shells and impact on the shape of the shell are also decsribed. Aluminium alloy AlSi which was cast in the experimental part is briefly described and an overview of the mechanical properties is presented. The design and construction of pattern for shell moulding, making of shells and casting of specimen for tensile testing was done in experimental part. CAD model of pattern was used for filling and solidification simulation in QuikCAST software. Pattern for shell mould was made based on the results of simultaion. Influence of baking time and pattern temperature on shell thickness and dimensional accuray was examined. Radiography was used for testing of internal defects in castings followed by tensile testing. Castings without porosity were obtained. In two tensile specimens, inclusion of sand was observed that caused the decrease of the tensile strength below the value prescribed by the standard.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:730552
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-05-22 11:55:26