Analiza tehnologije zavarivanja okvira električnog bicikla Thor

master's thesis

• Title (english): Analysis of welding technology on Thor electric bicycle frame
• Author: Filip Daničić
• Mentor: Ivica Garašić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2022-03-31, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

U ovom radu provedena je analiza tehnologije zavarivanja spoja na okviru električnog bicikla
Thor, tvrtke DC Bikes. U teorijskom dijelu rada opisan je izbor materijala pri izradi okvira
bicikla, karakteristike MIG/MAG postupka zavarivanja koji se koristio za izvedbu ovoga
spoja, te su dane osnovne informacije o pravilnom konstruktivnom oblikovanju s obzirom na
zavarivanje.
Uzorci su zavareni, jedan u Laboratoriju za zavarivanje na Fakultetu strojarstva i
brodogradnje, drugi u TEP-u. Pritom su korišteni različiti procesni parametri i oprema,
navedeni u eksperimentalnom dijelu rada. Nakon zavarivanja oba spoja ispitana su
penetrantskom tehnikom s ciljem otkrivanja eventualnih nepravilnosti otvorenih prema
površini. Iz oba uzorka izrezani su makroizbrusci, te je provedena geometrijska analiza
poprečnih presjeka zavara i ispitivanje tvrdoće.

Abstract (english)

In this thesis, the welding technology of a joint on the frame of the electric bicycle Thor, of
the company DC Bikes, was analyzed. In the theoretical part of the thesis, choosing the
material for the construction of bike frames is described, as well as the characteristics of the
MIG/MAG welding process which was used to perform the joint. Basic information about
proper constructive design with respect to welding, was given.
The samples were welded, one in the Laboratory at the Faculty of Mechanical Engineering
and Naval Architecture, the other one in TEP. Different equipment and process parameters
were used in doing so, which is shown in the experimental part of the thesis. After welding,
both joints were tested using penetrant inspection in order to detect possible irregularities
open to the surface. Macrographs were cut out of both samples, geometric analysis of weld
cross-sections and hardness testing were performed.

• Keywords: okvir električnog bicikla; čelični limovi; parametri zavarivanja
• Keywords (english): electric bicycle frame; steel sheets; welding parameters
• Language: croatian
• URN:NBN: urn:nbn:hr:235:181470
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-03-29 13:58:44