PROCESS, PLANT AND MATERIAL FOR PRODUCING RIMS MADE OF AN ALUMINIUM ALLOY FOR VEHICLES, AND RIMS OBTAINED THEREBY

摘要

A plant and a process are disclosed for producing rims (1) made of an aluminium alloy for vehicles, through the steps of: providing thixotropic billets made of an aluminium alloy; obtaining crop ends of material by sizing the billets; heating the crop ends between 580 DEG C and 600 DEG C in heating furnaces (5); loading the heated crop ends in a die-casting machine (11) for products of the "Semi Solid Material" type; forming a molding with the die-casting machine (11); extracting the molding; depositing the molding onto a conveyor belt (15); and controlling a quality of the obtained molding, sending then it to mechanical workings and/or an heat treatment; alternatively, previously cooling the molding in a tank (16); and depositing the cooled molding on a shearing die for shearing feedheads and/or risers.