Method, casting mold and device for producing a vehicle wheel

Abstract

The invention relates to a method for producing a vehicle wheel from a light-metal material, in which the light-metal material is introduced in liquid form into a mold cavity of a casting mold. The vehicle wheel is produced by means of pressurized casting, wherein the casting mold is temperature-controlled in different regions to different temperatures.

What is claimed is: 
     
         1 . A method of producing a vehicle wheel from a light-metal material comprising introducing a light-metal material in liquid form into a mold cavity of a casting mold, wherein the vehicle wheel is produced using pressurized casting, and wherein the casting mold is tempered to different temperatures in different areas. 
     
     
         2 . The method of  claim 1 , wherein in areas in which the vehicle wheel ( 2 ) has a small cross-section, the casting mold is tempered to high temperatures, and in areas in which the vehicle wheel has a large cross-section, the casting mold is tempered to low temperatures. 
     
     
         3 . The method of  claim 1 , wherein the molten light-metal material is in a molten state and is introduced into the mold cavity at a speed of more than 5 m/s. 
     
     
         4 . The method of  claim 1 , wherein a venting area, in which the casting mold is vented, is tempered to a much lower temperature than the other areas of the casting mold. 
     
     
         5 . A casting mold for producing a vehicle wheel from a light-metal material comprising mold parts that form a mold cavity for receiving the light-metal material in liquid form, wherein the casting mold has areas tempered to different temperatures using tempering devices. 
     
     
         6 . The casting mold of  claim 5 , wherein the tempering devices are formed as pressurized water circuits, electric heating cartridges, and/or pressurized oil circuits. 
     
     
         7 . The casting mold of  claim 5 , wherein the mold parts and/or inserts connected to the mold parts and/or venting elements comprise different materials. 
     
     
         8 . The casting mold of  claim 5 , wherein the tempering devices are in operative connection with a control device for controlling and/or regulating the temperatures of the tempered areas. 
     
     
         9 . The casting mold of  claim 5 , wherein at least two mold parts movable relative to each other are provided. 
     
     
         10 . The casting mold of  claim 5 , wherein at least one of the mold parts has a plurality of tuning elements for adjusting the mold part to different temperatures acting on the casting mold. 
     
     
         11 . The casting mold of  claim 5 , wherein in a venting area of the mold cavity of the casting mold a surface change in the form of a tempered labyrinth-like structure and/or at least one change in cross-section and/or at least one deflection is provided. 
     
     
         12 . An apparatus for producing a vehicle wheel comprising the casting mold of  claim 5 . 
     
     
         13 . The apparatus of  claim 12 , wherein at least one of the mold parts of the casting mold is movable in the closing direction of the casting mold relative to another mold part by means of at least one guide element not belonging to the casting mold. 
     
     
         14 . The apparatus of  claim 12 , wherein the mold parts are thermally separated from guide elements moving the same. 
     
     
         15 . The apparatus of  claim 12 , wherein at least two of the mold parts are movable by means of respective gripping elements in a direction perpendicular to the closing direction. 
     
     
         16 . The apparatus of  claim 13 , wherein at least one of the mold parts can be connected to the at least one guide element and/or to the gripping elements by means of quick-connection means. 
     
     
         17 . The apparatus of  claim 12 , wherein respective units for supplying the tempering devices are integrated into the apparatus. 
     
     
         18 . The apparatus of  claim 12 , wherein at least one vacuum unit is provided for extracting air from the mold cavity.