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undergraduate thesis
Ispitivanje trošenja alata kod obrade čelika za izradu prstenova kotrljajućih ležaja
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. urn:nbn:hr:235:522611
Pisk, Matija
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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Pisk, M. (2019). Ispitivanje trošenja alata kod obrade čelika za izradu prstenova kotrljajućih ležaja (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:522611

Pisk, Matija. "Ispitivanje trošenja alata kod obrade čelika za izradu prstenova kotrljajućih ležaja." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:522611

Pisk, Matija. "Ispitivanje trošenja alata kod obrade čelika za izradu prstenova kotrljajućih ležaja." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:522611

Pisk, M. (2019). 'Ispitivanje trošenja alata kod obrade čelika za izradu prstenova kotrljajućih ležaja', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 18 July 2024, https://urn.nsk.hr/urn:nbn:hr:235:522611

Pisk M. Ispitivanje trošenja alata kod obrade čelika za izradu prstenova kotrljajućih ležaja [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2019 [cited 2024 July 18] Available at: https://urn.nsk.hr/urn:nbn:hr:235:522611

M. Pisk, "Ispitivanje trošenja alata kod obrade čelika za izradu prstenova kotrljajućih ležaja", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:235:522611

Metadata
TitleIspitivanje trošenja alata kod obrade čelika za izradu prstenova kotrljajućih ležaja
Title (english)Examination of the tool wear on machining of steel of the bearing rings
AuthorMatija Pisk
MentorBožidar Matijević (mentor)
MentorIvan Kumić (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2019-02-28, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Prilikom izrade prstenova kotrljajućih ležajeva najčešće se primjenjuju čelici kvalitete 100Cr6, 80CrMn4 ili 100CrMnS6-4. Sama izrada prstenova provodi se na različitim tokarilicama uz primjenu različitih oblika i kvaliteta reznih pločica. Kako se radi o velikoserijskoj ili masovnoj proizvodnji prstenova kotrljajućih ležajeva tako je i potrošnja reznih pločica također velika. Iz tog razloga važno je odabirom kvalitetnih pločica utjecati na troškove izrade prstenova kotrljajućih ležajeva. Kako danas na tržištu imamo različite proizvođače reznih pločica različitih kvaliteta (sastava osnovnog materijala, prevučene različitim slojevima) potrebno je prateći trošenje i analizom reznih pločica, zaključiti o kvaliteti istih. U ovom radu provedena su ispitivanja na istrošenim reznim pločicama koje su napravljene od tvrdog metala i prevučene funkcionalnim prevlakama. Primjenom kalotestera izmjerena je debljina prevlake. Utiskivanjem i analizom otiska Rockwell C indentorom utvrđena je adhezivnost prevlake. Nanoindentacijom je određena tvrdoća osnovnog materijala i prevlake, dok je Palmqvistovom metodom određena lomna žilavost osnovnog materijala. Metalografskim ispitivanjem poprečnog presjeka provjerena je mikrostruktura osnovnog materijala te su dobiveni rezultati stavljeni u kontekst trajnosti reznog alata.
Abstract (english)
In the manufacturing of rolling bearings rings, materials like 100Cr6, 80CrMn4 or 100CrMnS6-4 are most commonly used. Bearing rings are generally manufactured using machining techniques like turning, in which cutting tools with different geometry and quality are applied. This industry being high volume production, uses large quantities of aforementioned cutting tools. By using cutting tools of different quality, it is possible to cut down on production costs in manufacturing of rolling bearing rings. In this research, coated cemented carbide cutting tools were tested using different analytical methods. Thickness of functional coatings was measured using calotest. Coating adherence to the substrate was analysed by Rockwell C indentation. Nano-hardness was tested using the instrumented method for hardness testing, while the fracture toughness of substrate was determined by Palmqvist method. Microstrucutre in cross section was metallographicly analysed, and all of the results were interpreted trough the longevity of cutting tools in real life application.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:522611
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsOpen access
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Created on2019-05-23 00:04:45