2026-04-22T05:38:54Zhttps://ebiltegia.mondragon.edu/oai/request

oai:ebiltegia.mondragon.edu:20.500.11984/59532024-03-05T12:26:17Zcom_20.500.11984_473col_20.500.11984_478

rodriguez, Iñigo ARRAZOLA, PEDRO JOSE 2023-01-16T10:23:38Z 2023-01-16T10:23:38Z 2020 0268-3768 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=162841 https://hdl.handle.net/20.500.11984/5953 This paper presents a novel indirect cryogenic cooling system, employing liquid nitrogen (LN2) as a coolant for machining the difficult-to-cut ASTM F-1537 cobalt-chromium (CoCr) alloy. The prototype differs from the already existing indirect cooling systems by using a modified cutting insert that allows a larger volume of cryogenic fluid to flow under the cutting zone. For designing the prototype analytical and finite element, thermal calculations were performed; this enabled to optimize the heat evacuation of the tool from the rake face without altering the stress distribution on the insert when cutting material. Turning experiments on ASTM F-1537 CoCr alloys were performed under different cutting conditions and employing indirect cryogenic cooling and dry machining, to test the performance of the developed system. The results showed that the new system improved surface roughness by 12%, and cutting forces were also reduced by 12% when compared with the existing indirect cryogenic cooling technique. eng © 2020 Springer Indirect cryogenic cooling Liquid nitrogen Cobalt-based alloys Cryogenic turning A novel indirect cryogenic cooling system for improving surface finish and reducing cutting forces when turning ASTM F-1537 cobalt-chromium alloys http://purl.org/coar/resource_type/c_6501