Utjecaj načina skrućivanja aluminijevih legura na napajanje odljevka

undergraduate thesis

• Title (english): Influence of solidification morphology on feeding behaviour of aluminium alloy casting
• Author: Petar Harjaček
• Mentor: Branko Bauer (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2021-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

U teorijskom dijelu ovoga rada opisana je tehnologija lijevanja u jednokratne pješčane kalupe. Predstavljeni su pojedini dijelovi uljevnog sustava, te pobliže opisani oni osnovni. Prikazana je važnost aluminijevih legura u ljevarstvu, objašnjena njihova svojstva, opisani načini skrućivanja i kako oni utječu na formiranje odljevka.
Eksperimentalni dio rada sastojao se od konstruiranja kalupa i uljevnog sustava za zadani disk, izrade pješčanih kalupa i lijevanja dva odljevka od aluminijevih legura AlSi13 i AlSi7Mg, te praćenja i uspoređivanja utjecaja načina njihovog skrućivanja na napajanje. Izvedene su numeričke simulacije procesa lijevanja pomoću programa QuikCAST i njihovi rezultati su uspoređeni s rezultatima dobivenim lijevanjem. Utvrđeno je djelomično poklapanje stvarnog stanja odljevaka s predviđanjima simulacija.

Abstract (english)

Theoretical part of this thesis explains the casting technology when using expendable moulds. Individual parts of a running system are mentioned and the elementary ones are closer described. The importance of aluminium alloys in casting is also shown, their properties explained, as well as types of solidification and its influence on formation of casting.
The experimental part of this thesis is composed of the design of a running system for a given disc model, making expendable moulds, casting two different castings using AlSi13 and AlSi7Mg alloys and comparing the influence of solidification morphology on feeding behaviour of the castings. Numerical simulations of the casting process were performed using QuikCAST software, and their results were compared to those obtained by casting. Matching of the results given by the simulation and the casting were determined.

• Keywords: aluminijeve legure; uljevni sustav; simulacija; pješčani kalup; skrućivanje
• Keywords (english): aluminium alloys; running system; simulation; expendable mould; solidification
• Language: croatian
• URN:NBN: urn:nbn:hr:235:028244
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-02-23 13:22:01