Influence of Cutting Force on Bimetallic Piston Machining by a Cubic Boron Nitride (CBN) Tool

摘要

Bimetallic pistons are most widely used in diesel engine vehicles for weight reduction and enhanced performance with long life. Aluminum alloy is reinforced with cast iron insert to realize the bimetallic pistons. The bonding between aluminum and cast iron is achieved through a patented process named the Al-Fin process. To ensure better bonding, the insert is dipped in the molten aluminum bath, this dipping time playing a vital role. The present study focuses on varying the dipping time from 90Â s to 5Â min to find the optimum dipping time. Achieving the near net shape of the bimetallic pistons without damaging the bonding between the aluminum and cast iron is the major challenge. This investigation also obtains optimal cutting parameters in turning off such pistons with cubic boron nitride as a single tool to machine the metal. The bond integrity after machining is primarily related to the magnitude of the cutting forces. Taguchi design of experiment analysis was conducted on the inserts which are subjected to various dipping time. The optimal cutting parameters for minimized cutting forces were identified. The extent of deboning and the surface finish were measured after machining to ensure the minimum cutting force condition to satisfy the requirements.View full textDownload full textKeywordsBonding, Cutting force, Dipping time, Machining, Surface roughnessRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/10426914.2012.677913