Casting device and casting method

Abstract

A method for manufacturing a cast component with a casting device includes providing a casting device. The casting device comprises a filling chamber, a mold cavity comprising a hollow space, runners comprising at least one of a different length and a different cross-section, and a plunger arranged in the filling chamber. The metal melt is provided in a fluid state in the filling chamber. The metal melt is advanced via the runners from the filling chamber to the mold cavity by advancing the plunger in the filling chamber. Electromagnetic fields are provided. A flow velocity of melt currents in the respective runners is increased or decreased via the electromagnetic fields so that a melt front in each of the runners reaches the mold cavity when the filling chamber has been completely filled by the plunger.

What is claimed is: 
     
         1 . A method for manufacturing a cast component with a casting device, the method comprising:
 providing a casting device comprising:
 a filling chamber, 
 a mold cavity comprising a hollow space, 
 runners comprising at least one of a different length and a different cross-section, each of the runners respectively connecting the filling chamber with the mold cavity, and 
 a plunger arranged in the filling chamber, the plunger being configured to advance a metal melt from the filling chamber via the runners into the mold cavity; 
   providing the metal melt in a fluid state in the filling chamber;   advancing the metal melt via the runners from the filling chamber to the mold cavity by advancing the plunger in the filling chamber;   providing electromagnetic fields; and   increasing or decreasing a flow velocity of melt currents in the respective runners via the electromagnetic fields.   
     
     
         2 . The method as recited in  claim 1 , wherein the increasing or decreasing of the flow velocity of melt currents in the respective runners via the electromagnetic fields is performed so that a melt front in each of the runners reaches the mold cavity when the filling chamber has been completely filled by the plunger. 
     
     
         3 . The method as recited in  claim 1 , wherein the electromagnetic fields are configured to be at least one of controlled and regulated as a function of at least one of the mold cavity, a temperature, and a melt composition. 
     
     
         4 . The method as recited in  claim 1 , wherein the electromagnetic fields are configured to reduce a hydrodynamic resistance of sections of the metal melt with a small cross-section so as to reduce a closing force of the casting device. 
     
     
         5 . The method as recited in  claim 1 , wherein the electromagnetic fields are configured to reduce a hydrodynamic resistance of sections of the metal melt with a small cross-section so as to decrease a casting drive force. 
     
     
         6 . The method as recited in  claim 1 , further comprising at least one of heating, decelerating, and accelerating the melt currents in the respective runners to a different degree via the electromagnetic fields. 
     
     
         7 . A casting device for a metal melt to implement the method as recited in  claim 1 , the casting device comprising:
 a mold cavity comprising a hollow space for a cast part;   a filling chamber configured to serve as a reservoir for a metal melt;   a gate unit comprising at least two runners, the at least two runners being configured to connect the filling chamber with the mold cavity; and   a flow velocity device configured to influence a flow velocity of the metal melt, the flow velocity device being configured to act on at least one of a part of the gate unit, a part of the at least two runners, and a part of the mold cavity.   
     
     
         8 . The casting device as recited in  claim 7 , wherein the flow velocity device influences the flow velocity via an electromagnetic field. 
     
     
         9 . The casting device as recited in  claim 7 , wherein the flow velocity device comprises coils configured to create an electromagnetic field, wherein each of the at least two runners is surrounded by a coil. 
     
     
         10 . The casting device as recited in  claim 7 , wherein the mold cavity further comprises at least one coil arranged in a surface area. 
     
     
         11 . The casting device as recited in  claim 7 , wherein the casting device further comprises an electromagnetic retaining device configured to retain the metal melt.