Thermal distortion of disc-shaped ductile iron castings in vertically parted moulds

Nikolaj Kjelgaard Vedel-Smith, Jakob Rasmussen, Niels Skat Tiedje

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A disc-shaped casting with an inner boss and an outer rim, separated by a thin walled section, was examined. This measurable deformation varied with the feeding modulus. The influence of alloy composition, particularly Si content, was examined with a pearlitic ductile iron (EN-GJS-500-7) and a fully ferritic ductile iron (EN-GJS-450-10). The experiment showed that both the alloy composition and choice of feeder influenced the degreeof deformation measured in the finished casting. It was found that the deformation of the pearlitic alloy was influenced controllably by changing the feeder modulus, whereas the deformation of the fully ferritic alloy was less affected by a change in thermal gradient. Both alloys underwent comparable deformations with respect to size, shape, and location.© 2014 Elsevier B.V. All rights reserved
Original languageEnglish
JournalJournal of Materials Processing Technology
Volume217
Pages (from-to)262-271
ISSN0924-0136
DOIs
Publication statusPublished - 2015

Keywords

  • Dimensional accuracy
  • SG iron
  • Feeder and riser
  • Machining allowance
  • SI content
  • Thermal gradient

Fingerprint Dive into the research topics of 'Thermal distortion of disc-shaped ductile iron castings in vertically parted moulds'. Together they form a unique fingerprint.

Cite this