Poboljšanje procesa difuzijskog stvaranja karbidnih slojeva

scientific master's theses

• Title (english): Improvement of the process of diffusion formation of the carbide layers
• Author: Đurđica Goršćak
• Mentor: Mladen Stupnišek (mentor)
• Committee member: Vinko Ivušić (predsjednik povjerenstva)
• Committee member: Mladen Stupnišek (član povjerenstva)
• Committee member: Božo Smoljan (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2005-02-22, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering
• Universal decimal classification (UDC): 621 - Mechanical engineering. Nuclear technology. Machinery

Abstract

U radu su postavljeni fizikalni principi za odvijanje procesa pougljičavanja te su analizirani utjecaji pojedinih parametara na debljinu pougljičenog sloja te na njegovu kvalitetu. Umjesto modela koji se temelji na difuziji temeljem razlike u koncentracijama, postavljen je model koji se temelji na aktivnosti ugljika. Utvrđeno je da dobiveni rezultati dobro odgovaraju postavljenom matematičkom modelu postupka pougljičavanja te se stoga izrađeni računalski program može upotrijebiti za praćenje mehanizama postupka pougljičavanja te analizu utjecaja parametara na ekonomičnost postupka kao i na dubinu i kvalitetu dobivenih slojeva, a time i za definiranje parametara kod upravljanja procesom pougljičavanja.

Abstract (english)

In the work, physical principles for managing the carburizing process have been established. The influence of the particular parameters to the depth of the carburized layer and to its quality have been analyzed. Instead of the model based on diffusion due to difference in concentrations, a model based on diffusion due to difference in carbon activity has been established. It has been proven that the results match the mathematical model of the carburizing process. Therefore, the computer program can be used for monitoring of the carburizing process mechanism and for analysis of influence of the parameters on process efficacy as well as on the process capability and on the quality of the obtained layers. Therefore, it can be used for defining of parameters for running of the carburizing process.

• Keywords: pougljičavanje; aktivnost ugljika; matematički model; difuzija; karbidni slojevi
• Keywords (english): carburizing; carbon activity; mathematical model; diffusion; carbide layers
• Language: croatian
• URN:NBN: urn:nbn:hr:235:844032
• Study programme: Title: Mechanical Engineering - mr.sc.; Study programme type: university; Study level: postgraduate; Academic / professional title: magistar znanosti (magistar znanosti)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-02-04 09:54:37