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Popis deformacije odrezkov pri struženju z visokotlačnim dovajanjem hladilno-mazalne tekočine v rezalno cono : magistrsko delo magistrskega študijskega programa II. stopnje StrojništvoŠtepec, JakobV magistrskem delu smo zasnovali analitični mehanski model lomljenja odrezkov s katerim je na podlagi dobljenih rezultatov mogoče napovedovati stopnjo mehanske deformacije oziroma lomljenje odrezkov ... pri pulzirajočem dovajanju hladilno-mazalne tekočine (HMT) v rezalno cono pri postopku struženja. Pri finih obdelavah, posebej pri struženju težko obdelovalnih materialov med katere spada tudi Ti6Al4V zlitina, pogosto prihaja do problemov z odrezki. Kot ena izmed rešitev te težave se ponuja pulzirajoče dovajanje HMT, kjer s povišanim tlakom dodatno deformiramo odrezek do te mere, da se le ta zlomi. Količino deformacije odrezka, kot posledico delovanja curka HMT, smo želeli popisati z razvojem modela. Za namen preverjanja ustreznosti zasnovanega analitičnega modela so bili v eksperimentalnem delu izvedeni eksperimenti. Analiziran je bil vpliv procesnih parametrov struženja in parametrov visokotlačnega dovajanja HMT na lom odrezkov. Za ugotovitev kako curek deluje na odrezek, smo z eksperimentom popisali obliko prečnega preseka curka in porazdelitev tlaka curka HMT, ki zadane odrezek in rezalno orodje. Ugotovljeno je bilo, da imajo procesni parametri struženja (podajanje, globina rezanja) in parametri pulzirajočega visokotlačnega dovajanja HMT v rezalno cono velik vpliv na proces lomljenja odrezkov. Z upoštevanjem ugotovljenih tlačnih izgub HMT pri analizi tlaka, ki deluje na odrezek smo ugotovili, da je zasnovani analitični mehanski model lomljenja odrezkov primeren za napovedovanje potrebnega tlaka HMT za kritično deformacijo oziroma lom odrezka.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Štepec], 2021Language - slovenianCOBISS.SI-ID - 84926979
Author
Štepec, Jakob
Other authors
Pušavec, Franci
Topics
magistrske naloge |
struženje |
odrezki |
visokotlačno odrezavanje |
Ti6Al4V |
analitični mehanski model lomljenja odrezkov |
master thesis |
turning |
chip formation |
high pressure turning |
Ti6Al4V |
analitical chip breaking model
Library/institution |
City | Acronym | For loan | Other holdings |
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Faculty of Mechanical Engineering, Ljubljana | Ljubljana | FSLJ |
reading room 1 cop.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Štepec, Jakob | |
Pušavec, Franci | 26559 |
Source: Personal bibliographies
and: SICRIS
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