Browsing by Author "Santos, M. T."
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Item Kinematic and sensitivity analysis of rotary forging process by means of a simulation model(2008-07) Montoya, I.; Santos, M. T.; Pérez, I.; González, B.; Puigjaner, J. F.; SG; PROMETALNowadays, due to the environmental regulations, the automotive market is demanding more complex components and the utilization of new materials. In this context, and due to its wide range of advantages, rotary forging technology is a very promising metal forming alternative to the conventional forming techniques. In this paper, an analysis of the material, the stress and strain has been realized, in order to show a comparison between conventional and rotary forging and to understand the mechanisms of rotary forming.Item Simulation And Experimental Results Of The Hot Metal Gas Forming Technology For High Strength Steel And Stainless Steel Tubes Forming(2007) Vadillo, L.; Santos, M. T.; Gutierrez, M.A.; Pérez, I.; González, B.; Uthaisangsuk, V.; Pérez, I.; González, B.; Tecnalia Research & Innovation; SG; PROMETALSimulation is a key topic within the development of the Hot Metal Gas Forming (HMGF) technology. In this work, tuve bulge tests and tubes forming processes using diez were simulated at high temperaturas by means of FEM. The tuve deformations is calculated by thenumerical simulations were compared to the results from experiments carried out at different heating conditions and using different input pressure curves. Flow curves for several stainless and high strength steels were experimentally determined in order to be used for the simualtion code. Ferritic stainless steel 1.4512 showed very high formability capabiliites at high temperatures. During tube bulge tests of the ferritic Steel a máximum expansión of tuve diameter up to 55% was recahed by using a pressure of only 14 bars.