Modifikacija in testiranje naprave za doziranje abraziva

Vouk, Luka (author), Lebar, Andrej (mentor), Valentinčič, Joško (comentor)

Postopek rezanja z abrazivnim vodnim curkom (AVC) je postopek, večinoma uporabljan za razrez, pa tudi za druge načine obdelave težko obdelovalnih materialov. Pri rezanju in obdelavi pusti AVC na površini obdelovancev značilno valovitost, ki omejuje njegovo uporabnost ter natančnost. V okviru priprav na raziskovanje povezanosti procesnega parametra masnega pretoka abraziva, postopka obdelave z AVC, z značilnostmi omenjene valovitosti, je bilo veliko pozornosti namenjeno delovanju ter izboljševanju delovanja modula za doziranje abraziva. Modul za doziranje abraziva je med eksperimenti predstavljal dodatni sestavni del naprave za rezanje z AVC ter je omogočal izvedbo eksperimentalnega graviranja vzorcev s spreminjanjem omenjenega parametra. Poleg dela na modulu za doziranje abraziva je bilo izvedeno tudi preizkušanje ter analiza delovanja modula za doziranje abraziva ob različnih nastavitvenih parametrih ter nominalnih pretokih abraziva. Poleg delovanja omenjenega modula so bili natančneje raziskani tudi vplivi na njeno delovanje iz okolice. Na koncu je bilo na napravi za rezanje z AVC z nameščenim modulom za doziranje abraziva izvedeno tudi eksperimentalno graviranje vzorcev ob različnih nominalnih masnih pretokih abraziva. Potek neravnin na dnu gravur vzorcev je bil s pomočjo črtnega laserskega merilnika tudi pomerjen ter računalniško obdelan in analiziran.

• Language: Slovenian
• Keywords: abrazivni vodni curek doziranje nihanje pretoka kvaliteta površine
• Work type: Master's thesis
• Typology: 2.09 - Master's Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Publisher: [L. Vouk]
• Year: 2018
• PID: 20.500.12556/RUL-102559
• UDC: 621.9:531/533(043.2)
• COBISS.SI-ID: 16397083
• Publication date in RUL: 02.09.2018

Secondary language

• Language: English
• Title: Modification and testing of a device for the feeding of abrasives

Abstract

The process of abrasive water je cutting is a process usually used, for the cutting and machining of difficult to machine materials. When abrasive water jet is used for the cutting and machining it leaves a characteristic wavy surface that limits the process accuracy and usefulness. During the preparation for the exploration of connections between the process parameter of the abrasive mass flow and the surface waviness a lot of attention was concentrated on the functioning and improvement of the abrasive feeding module. The module was an essential part of the abrasive water jet cutting device which was later used for preliminary experiments. The module enabled us to do experimental abrasive water jet machining using different abrasive mass flow rates. Experiments were also carried out with different module abrasive feeding parameters only with the module in order to analyse and measure the abrasive mass flow rates through it. Possible environmental influences on the abrasive feeding module functioning were also explored. In the end experimental machining was carried out using the abrasive water jet cutting device and the feeding module with different abrasive mass flow rates. The created wavy surface was measured with a line laser surface measuring device and analysed using computer software.

• Keywords: abrasive water jet material feeding flow fluctuation surface quality