Equal Strength Analysis of Prestressed Combined Die for Cold Extrusion Based on the Unified Strength Theory
Through implementing the equal-strength analysis based on unified strength theory, strength calculation formulas of two-and three-layer prestressed combined dies for cold extrusion were derived in this investigation. Two parameters were included in the suggested strength expression, parameter & presenting/considering the difference between material tensile and compressive properties, and the parameter b describing the effect of intermediate principle stress. A computer code was created based on the suggested strength formulas. Utilizing the created code, six sets of & and b values were chosen for strength analysis of combined dies. And then, the effect of parameter &; and b on the strength of combined die was found and concluded. In addition, a set of prestressed combined dies has been successfully used for mass production which was designed based on the proposed strength calculation formulas and the corresponding computer code.
|Keywords||combined cold extrusion die, equal strength analysis, magnitude of interference, stratified radius|
|Conference||2017 International Conference on Sensing, Diagnostics, Prognostics, and Control, SDPC 2017|
Ao, W. (Wengang), Ding, P. (Ping), & Liu, J. (2017). Equal Strength Analysis of Prestressed Combined Die for Cold Extrusion Based on the Unified Strength Theory. In Proceedings - 2017 International Conference on Sensing, Diagnostics, Prognostics, and Control, SDPC 2017 (pp. 753–760). doi:10.1109/SDPC.2017.147