Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Analysis of welding in comparable steel grades: Influence of steel grade on the welding process
Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
2014 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesisAlternative title
Analys av svetsning i jämförbara plåtkvalitéer : Plåtens inverkan på svetsprocessen (Swedish)
Abstract [en]

This master thesis is written to examine the influence of different low carbon steel sheet materials on the GMAW welding process. During welding the properties of the base material influence the productivity of the welding process. The purpose of this thesis is to examine how the choice of material and welding speed affect the welding process and the productivity.

A literature survey was performed to describe the welding technique and the differences in manufacturing for the sheet materials as well as the effect of alloying and welding on the sheet material. Defects in the weld and methods used to determine them are explained. Test pieces of the different sheet materials were welded with the GMAW process and examined.

The result shows that there is a variation in the welding process regarding weld penetration. Measurements also show that welding speed and gap have little influence on the hardness of the weld and heat-affected zone and that the S355MC is more likely to suffer from a narrower toe transition radius than S355NL and S355MC Si. This and the higher area in the Y2 region for the S355MC could indicate a stronger inward flow in the weld pool during welding possibly a result of surface active agents such as oxygen and sulphur.

Abstract [sv]

Denna uppsats skrevs för att undersöka hur olika lågt legerade kolstål påverkar svetsprocessen för gasmetallbågsvetsning. Under svetsning påverkar materialets egenskaper produktiviteten för svetsprocessen. Syftet med denna uppsats är att undersöka hur svetshastighet och materialval påverkar svetsprocessen och produktivitet.

En litteraturstudie genomfördes för att beskriva svetsprocessen och olikheter i tillverkningen av de olika plåtkvaliteterna samt hur olika legeringsämnen påverkar plåtkvaliteten. Dessutom beskrivs Svetsdefekter samt metoder för detektering av svetsdefekter förklaras. Testbitar av de olika plåtkvaliteterna svetsa samman genom gasmetallbågsvetsning och undersöks sedan.

Resultatet visar på att variationer i svetsprocessen förekommer vid mätning av inträningen. Resultat visar även på att svetshastigheten och förekomsten av en spalt har liten inverkan på hårdheten i svetsen eller den värmepåverkade zonen samt att S355MC i större utsträckning lider av en snävare övergångsradie an S355NL och S355MC Si. Detta tillsammans med en större area i Y2 regionen av svetsen tyder på att S355MC kan leda av ett starkare inåtgående flöde i smältan vilken kan påverkas av ytaktiva ämnen som syre och svavel.

Place, publisher, year, edition, pages
2014. , 67 p.
Keyword [en]
Welding, joining, steel
National Category
Manufacturing, Surface and Joining Technology Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kau:diva-33714OAI: oai:DiVA.org:kau-33714DiVA: diva2:747540
External cooperation
Volvo Construction Equipment, Arvikaverken
Subject / course
Mechanical Engineering
Educational program
Engineering: Mechanical Engineering, spec. in Materials Engineering (300 ECTS credits)
Supervisors
Examiners
Available from: 2014-09-17 Created: 2014-09-16 Last updated: 2014-09-17Bibliographically approved

Open Access in DiVA

fulltext(110183 kB)238 downloads
File information
File name FULLTEXT01.pdfFile size 110183 kBChecksum SHA-512
4409f8fed05cbbe4d5563b1a71ff3e7fbf31b9b2170a7a03a80e56932e35be3851820f551e5648231f86dd5b3ab073803cb6c873463ce7a798742044610bf360
Type fulltextMimetype application/pdf
Arkivfil(110121 kB)55 downloads
File information
File name FULLTEXT02.pdfFile size 110121 kBChecksum SHA-512
bd0906ec6ff7a278afee14995dfe20c7d265a28bcacc6ad72f033082052cdf7f61893a39ab13443731b8c7644c617c200d87e32e1607eebc9fbd33f1594db9dd
Type fulltextMimetype application/pdf

By organisation
Department of Mechanical and Materials Engineering
Manufacturing, Surface and Joining TechnologyMetallurgy and Metallic Materials

Search outside of DiVA

GoogleGoogle Scholar
Total: 293 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 805 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf