THREE-PLATE PRESSURE DIE CASTING MOULD HAVING A GATING SYSTEM AND IMPROVED SPRUE SEPARATION, AND METHOD FOR PRESSURE DIE CASTING

摘要

The invention relates to a three-plate pressure die casting mould (100) for producing at least one metal pressure die-cast part (200) by pressure die casting a metal melt, having a first, second and third mould part (110, 120, 130), wherein the third mould part (130) is arranged between the first and the second mould part (110, 120), and having at least one mould cavity (140) and a gating system (150) by means of which the metal melt can be fed to the mould cavity (140), wherein the gating system (150) has a plurality of feed channels (151) that are arranged in the third mould part (130) and open into the mould cavity (140). At their ends on the mould cavity side, the feed channels (151) that open into the mould cavity (140) are each designed to have a taper (153) which locally narrows the channel cross section and by means of which there can be produced predetermined breaking points which then, upon opening of the pressure die casting mould (100), allow defined separation of the die-cast part (200) from the sprue (300, 310). The invention also relates to a method for pressure die casting using this three-plate pressure die casting mould (100).