The Performances of Different Coated Carbide Drills when Drilling a Cast Nickel-Based Alloy

C. Xue; W.Y. Chen

doi:10.4028/www.scientific.net/AMR.497.41

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Study on Fracture Performance of In Situ Growth Whisker Toughened Composite Ceramic Tool
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The Performances of Different Coated Carbide Drills when Drilling a Cast Nickel-Based Alloy
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The Performances of Different Coated Carbide Drills when Drilling a Cast Nickel-Based Alloy

Abstract:

The performances of different coated carbide drills when drilling cast GH625 nickel-based alloy were evaluated in terms of tool wear and cutting force. Wear pattern observation and cutting force measurement were conducted under different cutting conditions. It was found that the drill coated with TiAlN/TiN showed the best overall performance among all the drill types tested. This drill type gave the longest tool life in terms of number of holes partly due to the excellent wear resistance of TiAlN/TiN multilayer. Besides, the thrust force and torque produced with this drill type were lower, which could be attributed to its good adhesion resistance and chip-ejection ability.