A process for the thixotropic deformation of the wheel rims made of cast metal alloys, rheology

摘要

this is a method of forming tixotropica circles for tyres with metal alloy reocolata from bricks (1) at the semi-solid state.comprising essentially a stage of injection of semi-solid ingots (1) into a mold (5) having cavities (7) forming the circle of the tire with a circuit (6) of termoregolazionand independent; the circuits (6) are located in adjacency to the cavity (7) forming, in order to raffreddarne areas (a) of greater thickness riscaldandone instead the areas (b) of lesser thickness.the stage of injection of bars (1) is effected by a variable speed controlled, correlated with the speed of progress along the cavity (7) forming.and related to the geometry of the cavity forming itself, and as a result of this stage of injection following the application of high pressures in the interface semisolida league until the solidified alloythe complete solidification of the league. (figs. 1, 1a, 1b, 1c).