diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje Strojništvo
Žiga Tomažič (Author), Joško Valentinčič (Mentor), Andrej Lebar (Co-mentor)

Abstract

Dandanes se v proizvodnji veliko vlaga v razvoj in optimizacijo obdelovalnih postopkov za zagotavljanje večje produktivnosti, nižjih stroškov obdelave, boljše natančnosti in kvalitete izdelkov. Raziskovalci so že razvili klasične obdelovalne postopke s kriogenim ohlajanjem, podobno lahko optimiziramo proces obdelave z abrazivnim vodnim curkom (AVC). Opazovali smo vpliv podhlajevanja obdelovancev iz nerjavnega jekla X5CrNi18-10 ter aluminijeve zlitine AlMg4,5Mn0,7 na njuno obdelovalnost. Vzorce smo ohlajali v tekočem dušiku na temperaturo -198 °C in nanje izdelali gravuro z AVC, dobljene rezultate pa smo primerjali z eksperimenti z vzorci pri sobni temperaturi. Spremljali smo spreminjanje temperature med ohlajanjem in graviranjem. Spreminjanje učinkovitosti procesa smo vrednotili glede na količino erodiranega materiala, ki smo jo izračunali kot razliko v masi vzorca pred in po obdelavi, ter glede na doseženo globino gravure.

Keywords

diplomske naloge;abrazivni vodni curek;rezanje;graviranje;kriogena obdelava;tekoči dušik;učinkovitost procesa;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [Ž. Tomažič]
UDC: 621.9.04:536.483(043.2)
COBISS: 77672963 Link will open in a new window
Views: 720
Downloads: 53
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Other data

Secondary language: English
Secondary title: Influence of cryogenic temperatures on efficiency of abrasive water jet machining
Secondary abstract: Recently, significant investment has been made in the development and optimization of the machining processes to ensure higher productivity, lower processing costs, high precision, and quality of products. Researchers have already developed classic processes that employ cryogenic cooling, which can similarly optimize the process of machining with abrasive water jet (AWJ). We observed how supercooling impacted the stainless steel X5CrNi18-10 and aluminium alloy AlMg4.5Mn0.7 workpieces. The samples were cooled by liquid nitrogen to -198 °C and engraved with AWJ. The results were compared with the experiments with samples conducted at room temperature. We monitored the change in temperature during cooling and engraving. The change in the efficiency of the process was evaluated according to both the quantity of the eroded material, which was calculated as the difference in the mass of the sample before and after the processing, and the depth of the engraving.
Secondary keywords: thesis;abrasive water jet;cutting;engraving;cryogenic machinig;liquid nitrogen;proccess efficiency;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za strojništvo
Pages: XXII, 44 str.
ID: 13339012
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