Bronze/TiC Composites for Friction Drums

Scientists in the U.S. Navy developed a centrifugal casting technology that was utilized in producing aluminum bronze/ titanium carbide (TiC) composites for friction drum applications in replenishment ships (Fig. 1). These drums are components of hauling winches on the ships. Scientists tested an in...

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Bibliographic Details
Published inAdvanced materials & processes Vol. 160; no. 11; pp. 39 - 41
Main Authors VALENCIA, Juan J, TIMS, Michael L, NASTAC, Laurentiu
Format Magazine Article
LanguageEnglish
Published Materials Park, OH ASM International 01.11.2002
Subjects
Applied sciences
ASM and Affiliates
ASM Website
City of Materials
Elec Device Failure
Exact sciences and technology
Foundry engineering
Heat Treating
Industrial Design
Metals. Metallurgy
Other casting methods. Solidification
Production techniques
Shape Memory
Thermal Spray
Bronze
Centrifugal casting
Drum
Microstructure
Application
Friction material
Composite material
Dispersion strengthened metal
Titanium carbide
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Summary:Scientists in the U.S. Navy developed a centrifugal casting technology that was utilized in producing aluminum bronze/ titanium carbide (TiC) composites for friction drum applications in replenishment ships (Fig. 1). These drums are components of hauling winches on the ships. Scientists tested an initial group of drums in a severe marine environment, and drum performance was outstanding. Unfortunately, the quality and performance of these early drums was not matched by subsequent production drums. The National Center for Excellence in Metalworking Technology (NCEMT) was asked to determine the cause of the poor performance. Toward this end, NCEMT conducted a "reverse engineering" study of the early drums, and analyzed the casting process in depth to determine the relative importance of the major casting parameters that directly affect the quality of the drums. This article describes the centrifugal casting process and discusses the development of a computer model, including studies of the many process variables that affect casting quality. It also includes a description of the reverse metallurgical engineering study of an early drum.
Bibliography:Production versions of centrifugally cast composite drums for shipboard winches performed poorly. Article tells how “reverse engineering” was used to determine why.
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ISSN:0882-7958
2161-9425