Analiza zahtjeva norme HRN EN 13134 za kvalifikaciju postupka tvrdog lemljenja

undergraduate thesis

• Title (english): Analysis of requirements in standard HRN EN 13134 for the qualification of brazing process
• Author: Mihael Loborec
• Mentor: Ivica Garašić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2025-02-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

Ovaj rad obrađuje temu izrade nerastavljivih spojeva, s posebnim naglaskom na lemljenje kao ključnu tehniku spajanja komponenti u strukturno čvrste i sigurne proizvode. Detaljno su obrađene karakteristike tvrdog lemljenja, koja se danas koristi u zrakoplovstvu, automobilskoj industriji i elektronici, zbog čega je jedna od ključnih tehnologija modernog doba. Obrađene su i sve faze provođenja postupka tvrdog lemljenja. Dan je pregled normativnih postupaka ispitivanja kvalitete spojeva izrađenih postupkom tvrdog lemljenja.
Cilj ovoga rada je detaljno analizirati tvrdo lemljenje, objasniti postupke, alate te norme i ispitivanja koji osiguravaju kvalitetu spojeva i omogućuju identifikaciju grešaka u procesu. U eksperimentalnom dijelu rada, provedeno je ispitivanje kvalitete lemljenih spojeva metodom pregleda slika presjeka uzoraka na makroizbruscima kako bi se ustanovili nedostaci i greške na spoju. te je dana ocjena o zadovoljavanju kvalitete konačnog spoja.

Abstract (english)

This paper addresses the topic of creating permanent joints, with a particular focus on brazing as a key technique for joining components into structurally strong and safe products. The characteristics of hard brazing are thoroughly examined, highlighting its modern applications in aerospace, automotive, and electronics industries, making it one of the essential technologies of today. All stages of the brazing process are discussed, along with an overview of standardized quality testing procedures for joints made using this technique.
The aim of this paper is to analyze brazing in detail, explain the procedures, tools, standards and tests that ensure the quality of the joints and enable the identification of errors in the process. In the experimental part of the paper, the quality of the brazed joints was tested by examining cross-sectional images of samples on macro-grinds in order to identify defects and errors in the joint. and an assessment of the satisfactory quality of the final joint was given.

• Keywords: tvrdo lemljenje; ispitivanje kvalitete; norma
• Keywords (english): brazing; quality testing; standard
• Language: croatian
• URN:NBN: urn:nbn:hr:235:896294
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-02-20 15:42:33