How Ceramic Cutting Tools Have Been Around For Over 100 Years

727 WordsOct 7, 20153 Pages
David Golding Term Paper Mech 4320 Dr. Lewis Advanced Cutting Materials Ceramic cutting tools have been around for over 100 years. The most common materials used prior to this were iron and steel. These metals are effective in cutting but have limitations that ceramics do not. There are many different types of materials used in the production of ceramic-based cutting tools. The production of ceramics have seen various advancements since its birth, and continues to be more dependable as new technologies are applied to lower cost and boost efficiency in development. Advanced cutting ceramics is a $30 million (US) industry per the Department of Energy and has seen increased growth in the last 10 years. Alumina (〖Al〗_2 O_3) and Silicon Nitride (〖Si〗_3 N_4) are most commonly found in a ceramic cutting material. Their attributes differ for their own specific purpose, but they all have the same core characteristics. They all demonstrate elevated hardness, strength, and thermal conductivity. Thermal conductivity is one of the main advantages in using ceramics over other materials. Ceramics can withstand temperatures over 4000℉ in its operation, while Carbide can only reach 1600℉. Cutting materials at this heat allows for the material being cut to be softened, allowing for a smoother, easier pass. These high temperatures are unattainable for carbide tools because they exceed its melting point. Ideal-machining temperatures (e.g., 2200°F for nickel alloys) can be accommodated by

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