Die casting nozzle and method for operating a die casting nozzle

摘要

Die cast nozzle for use in a die casting hot chamber system for molten metal with at least melting channel (4) in a channel carrier (3) that can be connected to a melt distributor (21), wherein the melting channel (4) passes over into a heating zone (6) and a nozzle tip (8), to which a sprue area (10) is attached, in which a plug of solidified melting can be formed that interrupts the melting flow, wherein the heating zone (6) comprises a heating cartridge (2) and/or a heatable nozzle shaft (33′) and/or the nozzle tip (8) is comprised as heatable nozzle tip (8′) and comprises at least one heating cartridge (2), the heatable nozzle shaft (33), or the heatable nozzle tip (8′) as heating element with electric heating, which comprises high power density in at least one section and low thermal inertia, comprised in a way that a temperature change gradient of 20 to 250 K/s, preferably 150 K/s, can be achieved on the surface of the heating element. A method for operating the die cast nozzle is also the subject matter of the invention.

主权项

1. A die cast nozzle for use in a die casting hot chamber system for molten metal with at least one melting channel (4) in a channel carrier (3) that can be connected to a melt distributor (21), wherein the melting channel (4) passes over into a heating zone (6) and a nozzle tip (8), to which a sprue area (10) is attached, in which a plug of solidified melting can be formed that interrupts the melting flow, characterised in that the heating zone (6) comprises a heating element with electric heating, that comprises in at least one section materials with low density and high thermal conductivity, providing a high power density and low thermal inertia, such that a temperature change gradient of 20 to 250 K/s can be achieved on the surface of the heating element, wherein the die cast nozzle comprises a nozzle body (5) that encases the channel carrier (3) and the nozzle body (5) or the channel carrier (3) are comprised of titanium.