Optimization of exothermic riser sleeve design parameters

Onuralp Yücel*, Ahmet Turan, K. Can Candeğer

*Corresponding author for this work

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

4 Citations (Scopus)

Abstract

Exothermic riser sleeves are important tools to increase solidification duration, particularly for iron-steel casting. Increasing the time to solidus improved casting product quality by minimizing cavities. Therefore, process costs were significantly reduced. In comparison with the use of unsleeved risers, exothermic riser sleeves retain up to 30–35% of the heat and increase the duration to solidus by nearly 50%. Exothermic riser sleeves are a mixture of metallothermic-based exothermic and insulating materials that are manufactured in different sizes and shapes. Various suppliers produce these sleeves in different compositions. However, the designers must clearly understand the thermochemical and thermophysical properties. The purpose of the present study was to experimentally determine the effects of varying experimental parameters such as reaction duration, flammability and temperature change etc. on selected exothermic sleeves. The results were compared with thermodynamical simulations which were performed using the contents and the corresponding thermophysical properties of exothermic sleeves.

Original languageEnglish
Title of host publication9th International Symposium on High-Temperature Metallurgical Processing
EditorsEnder Keskinkilic, Zhiwei Peng, Mark William Kennedy, Jiann-Yang Hwang, Onuralp Yucel, Jerome P. Downey, Shijie Wang, Rafael Padilla, Baojun Zhao, Dean Gregurek, Tao Jiang
PublisherSpringer International Publishing
Pages345-351
Number of pages7
ISBN (Print)9783319721378
DOIs
Publication statusPublished - 2018
Event9th International Symposium on High-Temperature Metallurgical Processing organized in conjunction with the Annual Meeting and Exhibition, TMS 2018 - Phoenix, United States
Duration: 11 Mar 201815 Mar 2018

Publication series

NameMinerals, Metals and Materials Series
VolumePart F10
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference9th International Symposium on High-Temperature Metallurgical Processing organized in conjunction with the Annual Meeting and Exhibition, TMS 2018
Country/TerritoryUnited States
CityPhoenix
Period11/03/1815/03/18

Bibliographical note

Publisher Copyright:
© 2018, The Minerals, Metals & Materials Society.

Keywords

  • Casting
  • Ductile iron
  • Metallothermic reduction
  • Riser sleeve
  • Steel

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