Patent ID: 8915290

Claim:
Hot chamber diecasting method for sprueless diecasting, wherein a plug of solidified molten material ( 22 ) (that can be remelted) forms in a diecasting die ( 7 , 20 , 30 , 45 , 50 , 50 ′, 60 , 60 ′, 60 ″, 86 , 86 ′, 86 ″) having a direct resistance heating in a feeding region, interrupting flow of molten material ( 22 ), characterised in the process steps of Closing a mould ( 43 , 44 ), Heating the diecasting die ( 7 , 20 , 30 , 45 , 50 , 50 ′, 60 , 60 ′, 60 ″, 86 , 86 ′, 86 ″) and fully remelting the plug in the feeding region ( 8 ) of the diecasting die ( 7 , 20 , 30 , 45 , 50 , 50 ′, 60 , 60 ′, 60 ″, 86 , 86 ′, 86 ″) by increasing direct resistance heating output, Aborting the heating by decreasing the direct resistance heating output, Injection of the molten material ( 22 ) into the mould ( 43 , 44 ), Maintaining the pressure of the molten material ( 22 ), Solidification of the molten material ( 22 ) in the mould ( 43 , 44 ), Solidification of the molten material ( 22 ) in the feeding region ( 8 ) of the diecasting die ( 7 , 20 , 30 , 45 , 50 , 50 ′, 60 , 60 ′, 60 ″, 86 , 86 ′, 86 ″), Opening the mould ( 43 , 44 ) and Demoulding a cast part from the mould ( 43 , 44 ).