magistrsko delo
Mirza Imširović (Author), Borut Kosec (Mentor), Damjan Klobčar (Co-mentor)

Abstract

Pri procesih varjenja in rezanja se sproščajo različni dimni plini, ki imajo v veliki meri vpliv na zdravje operativnih oseb. V okviru magistrskega dela je bilo izvedeno vzorčenje in analiza delcev prahu, ki se sproščajo pri različnih postopkih varjenja. Postopki varjenja so potekali po TIG in MIG postopku z različnimi dodajnimi materiali ter različnimi procesnimi parametri. Pri vseh postopkih je bil uporabljen isti osnovni material in sicer AlSi zlitina. Dimni plini, ki so se sproščali pri procesu varjenja so bili zajeti z odsesovalno napravo GilAir Plus v kateri je bil nameščen membranski filter, ki služi za filtracijo in zajemanje delcev prahu. Pretok zraka pri zajemanju delcev prahu je znašal 0,5 l/min, kar je tudi maksimalna vrednost glede na prepustnost filtra. Čas vzorčenja je pri vseh postopkih potekal v časovnem intervalu ene minute in sobni temperaturi 25 °C. Kemijska analiza delcev prahu je bila izvedena z vrstičnim elektronskim mikroskopom opremljenim z EDS analizatorjem. Klasifikacija delcev je bila izvedena v skladu s standardom ISO 13322 glede na velikost, geometrijo in število delcev.

Keywords

delci prahu;dimni plini;varjenje;kakovost zraka;geometrija;sestava;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL NTF - Faculty of Natural Sciences and Engineering
Publisher: [M. Imširović]
UDC: 669
COBISS: 133410563 Link will open in a new window
Views: 87
Downloads: 28
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Other data

Secondary language: English
Secondary title: evaluation of dust particles emissions at welding and cutting processes
Secondary abstract: During the welding and cutting processes, various fumes are released, which have a great impact on the health of the operating workers. As part of the master's thesis, sampling and analysis of dust particles released during various welding processes was carried out. Welding procedures used were TIG and MIG with different additional materials and different process parameters. The same basic material, AlSi alloy, was used in all of welding procedures. Gases that were released during the welding processes were captured by the GilAir Plus device, in which a membrane filter was installed, which serves for filtration and capture of dust particles. The air flow rate responsible for collecting dust particles was 0.5 l/min, which is also the maximum value in terms of filter permeability. The sampling time for all procedures took place in a time interval of one minute and a room temperature of 25 °C. The chemical analysis of dust particles was carried out with an scanning electron microscope equipped with an EDS analyzer. Particle classification was performed according to the ISO 13322 standard according to particle size, geometry and number.
Secondary keywords: dust particles;gases;welding;air quality;geometry;composition;
Type (COBISS): Master's thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Naravoslovnotehniška fak., Oddelek za materiale in metalurgijo
Pages: XIV, 41 f.
ID: 16391538