oru.sePublications
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
Evaluation of friction in the hot rolling of steel bars by means of on line forward slip measurements
Örebro University, Department of Technology.
2004 (Swedish)In: Scandinavian journal of metallurgy, ISSN 0371-0459, E-ISSN 1600-0692, Vol. 33, no 3, p. 129-145Article in journal (Refereed) Published
Abstract [sv]

In spite of the importance of friction it is still a weak point in the analysis of rolling. Most studies assume that a coefficient of friction (μ) is representative for the roll gap. Forward slip measurements under normal production conditions in a bar mill have been used to evaluate the coefficient of friction, completed by laboratory measurements in a high-temperature test rig, and stability measurements in oval-square and flat-edge oval pass sequences. Coefficients of friction in the range 0.35-0.40 have been evaluated from the forward slip measurements. The rolling speed did not exceed 0.2 m/s and measurements were made in the temperature range 1000-1150°C. No clear influence of temperature on friction could be observed. The stability measurements show similar results. However, no tests have been made at temperatures other than 1000°C, and no influence of temperature on friction can be evaluated. In the high-temperature test rig the influence of temperature on friction is strong at temperatures exceeding 900°C, and probably the mechanism of friction changes in the test rig at higher temperatures, due to the lack of plastic deformation in the contact zone. Further investigations are necessary to formulate a relevant model for friction, valid for the entire range of parameters in a bar or wire rod mill. © Blackwell Publishing, 2004.

Place, publisher, year, edition, pages
2004. Vol. 33, no 3, p. 129-145
Keywords [en]
Bars (metal), Hot rolling, Friction, Online systems, High temperature effects, Shear stress, Mathematical models
National Category
Mechanical Engineering
Research subject
Mechanical Engineering
Identifiers
URN: urn:nbn:se:oru:diva-4559DOI: 10.1111/j.1600-0692.2004.00676.xOAI: oai:DiVA.org:oru-4559DiVA, id: diva2:138858
Available from: 2007-07-12 Created: 2007-07-12 Last updated: 2017-12-14Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Lundberg, Sven-Erik

Search in DiVA

By author/editor
Lundberg, Sven-Erik
By organisation
Department of Technology
In the same journal
Scandinavian journal of metallurgy
Mechanical Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 165 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