Company Filing History:
Years Active: 2002-2004
Title: A Stewart Ballantyne: Innovating Large Diameter Nickel Base Alloy Ingots
Introduction: A Stewart Ballantyne, an accomplished inventor based in Charlotte, NC, has made significant contributions to the field of metallurgy. With two patents to his name, Ballantyne has focused on methods for producing large diameter ingots of nickel base alloys, showcasing his expertise and innovative spirit.
Latest Patents: Ballantyne's latest patents revolve around a method of producing nickel base alloys, specifically highlighting the technique of casting the alloys within a mold and subjecting them to a series of meticulous processes. This includes annealing and overaging the ingot at a minimum temperature of 1200°F (649°C) for at least 10 hours. His process further entails electroslag remelting (ESR) at a melt rate of 8 lbs/min (3.63 kg/min), followed by a swift transfer to a heating furnace within 4 hours of solidification. These measures lead to premium-quality vacuum arc remelted (VAR) ingots with diameters exceeding 30 inches (762 mm), particularly from Alloy 718 and other nickel-based superalloys, addressing the challenges posed by segregation during casting.
Career Highlights: Throughout his career, Ballantyne has demonstrated a commitment to advancing alloy production techniques. His innovative approach has positioned him as a key figure at ATI Properties, Inc., where he continues to explore new technologies that improve the quality and efficiency of alloy manufacturing.
Collaborations: Collaboration appears to be a valued aspect of Ballantyne's career, as he has worked alongside notable colleagues such as Betsy J. Bond and Laurence A. Jackman. Together, they contribute to the ongoing advancements in the field of metallurgy, sharing their insights and expertise.
Conclusion: A Stewart Ballantyne stands out as a dedicated inventor whose work has significantly impacted the production of large diameter nickel base alloy ingots. His innovative methods and collaborations with esteemed colleagues at ATI Properties, Inc. continue to push the boundaries of metallurgical engineering, paving the way for future advancements in the industry.
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