Abstract
A small flywheel can be formed directly from a cylindrical workpiece by cold axisymmetric upsetting with lateral extrusion. The authors found that an effective material flow for fulfilling a die cavity in the above die forging can be generated by placing a stepwise cavity on the bottom die plane at the peripheral section. When the dimensions of the hollow plane formed on the disk product by the above die configuration are optimized in the shape and die designs of a flywheel, the net shape forging of a flywheel can be achieved by semi-core forging with the above improved material flow. The advantage of the above forming technology is that no severe increase in punch load, observed in core forging at the final stage of the forming process, occurs, and die life can be elongated in net shape forging. The surface condition and inner strain condition of the product were also investigated by observing the products and FEM, and sufficiently good conditions were confirmed
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Japan Society for Technology of Plasticity
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
