Method for melt metal in molds of green sand and sealing device for casting in molds of chute, green sand

摘要

Method for fusing metal in a mould of green sand and sealing device for foundry moulds of sand chute in green ".The method is based on the simultaneous filling of the mould (1) by the bottom through the chute main cast (3) and elevation of the molten metal (2) in a secondary channel (6),Which branches at the beginning of the casting trough (3), with the molten metal (2) is rising through the secondary channel (6) in the same quantity in the mold (1),So that when the latter is filled with the foundry main rail (3) is sealed and the feeding of the secondary channel (6) continues.Doing the same to overflow and fill the filling head corresponding to (5), provided at the top of the mould (1), with the secondary channel (6) communicating at the top with the feeding head (5),So that once the head is full, the secondary feed chute (6) is sealed.In this way, the majority of the liquid metal reaches the part of the top of the mould (1) and can be fed to it in order to compensate for the contraction of the metal as it cools.An additional objective of the invention is the device (7) which seals the main casting rail (3) and the secondary channel (6), with these two sealing devices (7) being identical and independent.