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On finishing of pressing die surfaces using machine hammer peening
Sandvik Tooling, R & D Center Olofström, Sweden.
Olofström School of Automotive Stamping, Olofström, Sweden.
Halmstad University, School of Business and Engineering (SET), Mechanical Engineering and Industrial Design (MTEK).ORCID iD: 0000-0001-8058-1252
2011 (English)In: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 52, no 1-4, p. 115-121Article in journal (Refereed) Published
Abstract [en]

Machine hammer peening (MHP) is a new method for finishing of surfaces. With this method, the workpiece surface is hammered with a spherical carbide tool. The main objective of the study was to evaluate whether the MHP method could become a plausible substitute for manual polishing in pressing die manufacturing where nodular cast iron is a common workpiece material. To do this, sample nodular cast iron surfaces were hammered and evaluated. Changes to the surfaces were evaluated using surface roughness measurements, hardness measurements and optical images. First of all, the workpiece surface was smoothened. Secondly, the surface hardness was increased significantly. Thirdly, the nodules on the workpiece surface were affected. They appeared to be smaller and not as visible. This effect would likely create a die surface less prone to galling since the cavities would not be filled with sheet metal to the same extent in a forming operation. In addition, with MHP, the amount of polishing needed to manufacture a die surface can be reduced because of the smoothening effect.

Place, publisher, year, edition, pages
Berlin: Springer Berlin/Heidelberg, 2011. Vol. 52, no 1-4, p. 115-121
Keywords [en]
Machine hammer peening, Pressing die, Surface finish, Nodular cast iron, GGG70L
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hh:diva-6202DOI: 10.1007/s00170-010-2725-0ISI: 000286200400010Scopus ID: 2-s2.0-79751529200OAI: oai:DiVA.org:hh-6202DiVA, id: diva2:359252
Available from: 2010-10-27 Created: 2010-10-27 Last updated: 2017-12-12Bibliographically approved

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Rosén, Bengt-Göran

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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More styles
Language
  • de-DE
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  • nn-NO
  • nn-NB
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  • Other locale
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Output format
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