Obstojnost karbidnih frezal, prevlečenih z različnimi kombinacijami prevlek

Eržen, Matej (author), Pušavec, Franci (mentor), Šturm, Roman (comentor)

V diplomskem delu je obravnavana tematika zaščitnih prevlek pri frezanju toplotno poboljšanega trdega jekla (z oznako 1.2083) s trdoto 55 HRC. Problematika postopka nastane zaradi vplivov trdega obdelovalnega materiala na orodja. Zaradi različnih vidikov obrabe se najprej poslabša obdelana površina obdelovanca, nato se povečajo odstopki od zahtevane dimenzije obdelovanca. Zaradi iztrošenega orodja je potrebna zamenjava ali naostritev. Da bi podaljšali obstojnost orodja je potreben razvoj oplemenitenja površin orodij. Cilj diplomske naloge je ugotoviti katera zaščitna prevleka je najbolj primerna za obdelavo trdega materiala, saj bodo ugotovitve podale smernice za nadaljnji razvoj. S tem namenom smo zasnovali eksperiment. Z različnimi seti orodij smo obdelovali obdelovanec s trdoto 55 HRC. Opazovali smo obrabe orodij in obliko odrezkov in ugotovili, da je najbolj primerna prevleka za obdelavo trdega materiala TiAlSiN prevleka.

• Language: Slovenian
• Keywords: odrezavanje, frezanje, eksperiment, obrabna obstojnost, prevleke, odrezki
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [M. Eržen]
• Year: 2019
• Number of pages: XXI, 51 str.
• PID: 20.500.12556/RUL-109249
• UDC: 621.914.2:621.793(043.2)
• COBISS.SI-ID: 16845851
• Publication date in RUL: 29.08.2019

Secondary language

• Language: English
• Title: Durability of carbide milling tools, coated with different types of coatings

Abstract

In the following degree is a discussion of hard protective coatings for milling of hard heat improved steal with hardness off 55 HRC. The main problem in milling of hard heat improved steal is the wear of the cutting tools. Because of different influences at first, we get high roughness of the surface, in the next moment the dimensions of the workpiece are not in tolerances. We must change the tool or sharpen it. To protect tools from wear we need to develop new protective coatings. Our goal in the degree is to find out which protective coating from test is the most appropriate for milling our workpiece material. The results will give us good information’s for the developing coatings in the future. We made the test in which we tested different coatings. At the end, we compared the wear resistance of the tools and shape of the chips. From results, we can see that the best protective coating for milling of hard heat improved steal is TiAlSiN coating.

• Keywords: cutting, milling, experiment, durability, coatings, chips