Patent ID: 9643245
Date: 2017-05-09
CPC Classifications: B22D

Claim:
1. A method for die casting with a casting device comprising a casting valve with a valve piston and a post-compression piston configured to provide a post-compression, the method comprising: providing a mold cavity which is cleaned and prepared for a mold filling process, and a casting valve in a closed position; opening the casting valve for casting; filling the mold cavity with a melt via the casting valve; closing the casting valve after the filling of the mold cavity with the melt; cooling the casting valve and the melt; removing a cast part; and providing a post-compression to the melt in the mold cavity during the cooling and before the removal of the cast part by the post-compression piston, wherein, the post-compression piston is integrated in the casting valve, and the post-compression piston travels beyond a front side of the valve piston into the mold cavity when providing the post-compression.