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Metal Expansion Penetration on Concave Casting Surfaces of Grey Cast Iron Cylinder Heads
Jönköping University, School of Engineering, JTH, Mechanical Engineering. Jönköping University, School of Engineering, JTH. Research area Materials and Manufacturing - Casting.
Jönköping University, School of Engineering, JTH, Mechanical Engineering. Jönköping University, School of Engineering, JTH. Research area Materials and Manufacturing - Casting.
2006 (English)Report (Other academic)
Abstract [en]

Cylinder heads have an extremely complex shape with large areas of concave casting surfaces. The concave casting surfaces are often associated with metal expansion penetration problems or other surface defects, e. g. surface shrinkage. The defects cause high production costs due to component rejection and increased fettling time. This report presents an investigation of the microstructure in grey cast iron close to the sand-metal interface affected by metal penetration in a complex shaped casting. The dominant penetration defect observed in the cylinder heads was expansion penetration. Even pre-solidification penetration and sand crack defects were observed. The microstructure found in the non penetrated areas is typical for solidification of grey iron cast in sand moulds.

Place, publisher, year, edition, pages
Jönköping: Tekniska Högskolan , 2006. , p. 9
Series
Research Report. School of Engineering, ISSN 1404-0018 ; 2006:1
Keywords [en]
Grey iron, Cylinder head, Primary austenite, Hot spot, Metal expansion penetration, Surface shrinkage, Dendrite, Inoculation
Identifiers
URN: urn:nbn:se:hj:diva-638OAI: oai:DiVA.org:hj-638DiVA, id: diva2:4355
Available from: 2007-01-16 Created: 2007-01-16 Last updated: 2017-08-14Bibliographically approved

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Authority records BETA

Diószegi, AttilaSvensson, Ingvar L.

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
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  • nn-NB
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  • Other locale
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Output format
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