Povećanje otpornosti na trošenje kotrljajućih ležaja primjenom triboloških prevlaka

undergraduate thesis

• Title (english): Increasing the wear resistance of rolling bearings by applying tribological coatings
• Author: Leonardo Biruš
• Mentor: Darko Landek (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2025-02-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Kotrljajući ležaji u svom su radu izloženi brojnim faktorima koji utječu na njihovo ponašanje tijekom eksploatacije te na njihovu trajnost. Jedan od tih faktora je i trošenje koje se uvijek nastoji svesti na minimum. To se, prije svega, postiže izborom optimalnog materijala te pravilno provedene toplinske obrade. Uz to, u tu se svrhu sve češće dodatno primjenjuju znanja iz inženjerstva površina, najčešće u vidu prevlačenja pojedinih elemenata kotrljajućih ležaja različitim vrstama triboloških prevlaka.
U teorijskom dijelu pobliže je razrađen sveprisutan problem trošenja te je dan detaljan prikaz kako se ono efektivno smanjuje primjenom triboloških prevlaka. Također, dana je obuhvatna tribološka analiza kotrljajućih ležaja.
U eksperimentalnom dijelu provedena su ispitivanja na prevučenim i neprevučenim igličastim kotrljajućim ležajima izrađenih od čelika 100Cr6 te su analizom rezultata izvedeni su zaključci o utjecaju triboloških prevlaka na trošenje kotrljajućih ležaja.

Abstract (english)

During their operation rolling bearings are exposed to different factors that affect their exploitation behaviour and work life. One of these factors is material wear which is always tried to be minimized. In the first place, this is accomplished by optimal material choice and proper heat treatment. Beside mentioned, for this purpose it is getting more common to use knowledge from surface engineering, most often in the form of applying different types of tribological coatings on rolling bearings elements.
In theoretical part, widespread wear problem is explained and detailed view of how it can be effectively reduced by applying tribological coatings is given. Furthermore, comprehensive tribological analysis of rolling bearings is also given.
In experimental part, testings of coated and uncoated needle rolling bearings made of 100Cr6 steel were conducted and conclusions about the effect of tribological coatings on wear of rolling bearings are given on the basis of results analysis.

• Keywords: trošenje; tribološke prevlake; kotrljajući ležaji; vibracije
• Keywords (english): wear; tribological coatings; rolling bearings; vibrations
• Language: croatian
• URN:NBN: urn:nbn:hr:235:986341
• 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: 2025-02-19 16:34:09