Weldability of zinc coated steel sheet by plasma arc welding

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The use of zinc coated steel in the automotive industry is rapidly increasing as a result of consumer demand for improved corrosion resistance of automobile bodies. Plasma arc welding of zinc coated steels is currently under investigation, with a strong emphasis on their weldability. In the present study, plasma arc welding has been performed on zinc coated steel with several welding parameters, such as current, travel speed and flow of plasma gas. Those parameters are interrelated in their effect on penetration, in order to produce sound welds. An optimum combination of parameters was sought, which would give full penetration of the weld, with the highest travel speed and no visual defects on every steel-sheet as a basis; hence, characterizing the process in the most interesting way and into a useful industrial applications. It is found that zinc coated steel sheets of 0.7 mm and 1 mm thickness can be welded by plasma arc welding. The microstructures of welds were almost similar. There is a slight difference in chemical composition of the welds because of zinc pick-up which varies from the top surface to the bottom welds. The presence of zinc in the welds did not have any effect on the mechanical properties.

Original languageEnglish
Title of host publicationMaterials Science Forum - Advanced Welding and Micro Joining/Packaging for the 21st Century - Selected peer reviewed papers from the International Welding/Joining Conference-Korea 2007, IWJC 2007
EditorsJong-Bong Lee, Dong-Hwan Park, Jong-Bong Lee, Suck-Joo Na, Chang Hee Lee
PublisherTrans Tech Publications Ltd
Pages61-66
Number of pages6
ISBN (Print)9770255547605, 9780878493838
Publication statusPublished - 1 Jan 2008
EventInternational Welding/Joining Conference-Korea 2007, IWJC 2007 - Seoul, Korea, Republic of
Duration: 10 May 200712 May 2007

Publication series

NameMaterials Science Forum
Volume580-582
ISSN (Print)0255-5476

Conference

ConferenceInternational Welding/Joining Conference-Korea 2007, IWJC 2007
CountryKorea, Republic of
CitySeoul
Period10/05/0712/05/07

Keywords

  • Mechanical properties and weldability
  • Plasma arc welding
  • Zinc coated steel sheet

Fingerprint Dive into the research topics of 'Weldability of zinc coated steel sheet by plasma arc welding'. Together they form a unique fingerprint.

Cite this