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Development of new process and product monitoring technologies for the manufacturing of high value alloy steels for use in critical applications
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Moncaster, William, Goodwin, Tim, Li, Zushu, Williams, Mark A., Griffiths, Gareth C. L., Kelly, Robert, Cutts, Matthew, Kitson, Paul, Jackson, James, Waistnidge, Jonathon, Wilson, Paul, Ladley, Christopher, Houcher, Matthew, Chambers, Jonathan and Farey, Steven (2024) Development of new process and product monitoring technologies for the manufacturing of high value alloy steels for use in critical applications. In: First ASTM International Symposium on Bearing and Transmission Steels Technology, New Orleans, 2–4 Nov 2022. Published in: Bearing and Transmission Steels Technology pp. 95-114. ISBN 9780803177451. doi:10.1520/STP164920220093
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Official URL: http://dx.doi.org/10.1520/STP164920220093
Abstract
During the mid-1700s, Benjamin Huntsman developed the crucible steelmaking process to improve the performance of steels used for making clock springs. This can be considered the beginning of the development of clean steels, which have certain requirements regarding inclusion chemistry and content arising from the potentially deleterious impacts that inclusions can have on steel properties. Today, steelmakers continue to produce clean steels for applications such as aerospace and bearings using tight control of existing process parameters, as environmental and economic drivers have pushed performance requirements. The current project introduced new methods of linking process parameters and product quality at the program sponsor, Liberty Speciality Steels, in three areas: (1) Quantification of the inclusion flotation process has traditionally relied heavily on the operator's experience, and so a great effort has been expended on monitoring ladle bubbling, with an aim to quantify bubbling so that it can be even more closely and consistently controlled. (2) Many methods of inclusion assessment have been established by producers and international bodies, all with their own benefits and limitations. However, emerging technologies, such as x-ray computed tomography, might offer more information than current techniques. (3) Although the common practice of procedural slag chemistry control has historically been used to great effect, analysis of through-process slag chemistry using x-ray fluorescence spectroscopy would allow slag mixes to achieve the best chemistry and slag additions to respond to actual slag chemistry in the ladle. Ultimately, the project aim is to assess the viability of applying these technologies to a speciality steelmaking process with the hope of allowing further process developments to improve final product properties.
Item Type: | Conference Item (Paper) | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||
Journal or Publication Title: | Bearing and Transmission Steels Technology | ||||||
Publisher: | ASTM International | ||||||
ISBN: | 9780803177451 | ||||||
Book Title: | Bearing and Transmission Steels Technology | ||||||
Official Date: | 1 January 2024 | ||||||
Dates: |
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Page Range: | pp. 95-114 | ||||||
DOI: | 10.1520/STP164920220093 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Conference Paper Type: | Paper | ||||||
Title of Event: | First ASTM International Symposium on Bearing and Transmission Steels Technology | ||||||
Type of Event: | Other | ||||||
Location of Event: | New Orleans | ||||||
Date(s) of Event: | 2–4 Nov 2022 |
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