Diecasting method and device

Abstract

A diecasting process and a diecasting device to shorten the cycle times. The closing of the mold and the filling of molten metal into a casting chamber ( 4 ) are performed simultaneously.

1 . A diecasting method for a horizontal cold-chamber diecasting machine, comprising: filling a metal melt is into a casting chamber, after which the metal melt is pressed into a closed mold cavity via a plunger, and the cast part is removed after the melt has solidified, wherein the metal melt is filled into a casting chamber during idle time, and hence while closing the mold containing the mold cavity. 
   
   
       2 . A diecasting method for a horizontal cold-chamber diecasting machine, comprising: filling or metering a metal melt into a casting chamber, after which the metal melt is pressed into a closed mold cavity, wherein the mold is closed and casting chamber is filled simultaneously, and hence wherein the casting chamber is filled with metal melt with the mold open or while closing the mold. 
   
   
       3 . The diecasting method according to  claim 1 , wherein at least one opening from the casting chamber to the mold cavity is at least partially closed at the latest when the metal melt starts to be filled into the casting chamber. 
   
   
       4 . The diecasting method according to  claim 3 , wherein closure takes place magnetically, thermally or mechanically. 
   
   
       5 . The diecasting method according to  claim 2 , wherein the casting chamber is vented by moving the plunger. 
   
   
       6 . The diecasting method according to  claim 1 , wherein the tablet solidification period coincides with the idle time. 
   
   
       7 . The diecasting method according to  claim 1 , wherein a at least one opening to a casting channel of the cavity is tightly sealed after each shot. 
   
   
       8 . The diecasting method according to  claim 7 , wherein residual melt remains between the plunger and opening, which at least partially solidifies during or after a shot, closing the opening as a plug. 
   
   
       9 . The diecasting method according to  claim 8 , wherein the plunger traverses close to the opening at the time of plug formation. 
   
   
       10 . The diecasting method according to  claim 7 , wherein the plug is at least partially melted after the casting chamber is filled again. 
   
   
       11 . A diecasting method for implementing a method according to  claim 1 , wherein the horizontal cold chamber diecasting machine, comprises a casting chamber with fill hole for filling in the metal melt and a plunger arranged in the casting chamber, and the casting chamber is joined with a fixed mold half, which corresponds with a moving mold half, and an opening in the casting chamber empties into a runner of a mold cavity, wherein a sealing element is movably arranged in front of the opening to at least partially seal the opening. 
   
   
       12 . The device according to  claim 11 , wherein the sealing element is a horizontally and/or vertically moving slider. 
   
   
       13 . The device according to  claim 11 , wherein the sealing element and/or the opening are part of the runner. 
   
   
       14 . The device according to  claim 11 , wherein the casting chamber and/or the slider comprise metal and/or ceramic or composite materials. 
   
   
       15 . The device according to  claim 14 , wherein the casting chamber and/or the sealing element comprise a nitrated material fabricated via powder metallurgy. 
   
   
       16 . The device according to  claim 12 , wherein the slider shifts parallel to the opening of the casting chamber. 
   
   
       17 . The device according to  claim 12 , wherein the slider is provided with a PVD coating. 
   
   
       18 . The device according to  claim 12  wherein a heater or cooler is integrated into the slider.