Study on a Smart SiAlON Cutting Tool with Temperature Sensing Function
A new type of temperature sensing smart tool is designed and manufactured taking advantage of resistance-temperature characteristics of negative temperature coefficient thermal sensitive ceramics and excellent wear resistance of structural ceramics.The smart tool body and temperature sensing module are composed of α/β-SiAlON structural ceramic and LaCrO3-Al2O3 thermal sensitive ceramic,and prepared by spark plasma sintering and microwave sintering,respectively.The cutting performance and temperature sensing function of the smart tool are tested by high-speed machining nickel-base superalloy GH4169.The smart tool shows excellent cutting performance,and when vc=200 m/min,f=0.1 mm/r,ap=1.0 mm,the material removal amount is 1.4 times higher than that of the commercial ceramic tool WG300,meanwhile,as well as,the smart tool possesses good temperature sensing function.The maximum sensing temperature is above 700 ℃,temperature sensing sensitivity is high,and the response time is nanosecond.
smart toolcutting temperature measurementSiAlON ceramicsnegative temperature coefficient thermal ceramicsspark plasma sinteringmicrowave sintering
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