Cryogenic Machining of Tantalum |
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| Institution: | 1. Materials Science & Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;2. Sigma Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA |
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| Abstract: | A new approach for the machining of tantalum is presented. The new approach is a combination of traditional turning and cryogenically enhanced machining (CEM). In the tests, CEM was used to reduce the temperature at the cutting tool/workpiece interface, and thus reduce the temperature-dependent tool wear to prolong cutting tool life. The new method resulted in a reduction of surface roughness of the tantalum workpiece by 200% and a decrease of cutting forces by approximately 60% in experiments. Moreover, cutting tool life was extended up to 300% over that in the conventional machining. |
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