Pro. CAST HPDC – shot piston 1
Pre. CAST - Materials Set cavity Empty (set cavity and molten metal like a casting) Metal is present in the shot sleeve. The bottom of the shot sleeve is thus ‘not empty’ and considered as casting type. 2
Pre. CAST - Interfaces All interfaces between casting domains should be set as EQUIV. All interfaces between casting and die are set as COINC. Interface between Casting and Piston should be created using the Add option and set as NCOINC. 3
Pre. CAST - Interfaces All interfaces between casting domains should be set as EQUIV. All interfaces between casting and die are set as COINC. Interface between Casting and Piston should be created using the Add option and set as NCOINC. 4
Pre. CAST – Boundary Condition In Boundary Conditions create a heat boundary condition for air cooling (in this case) and apply it to the external surfaces of the die 5
Pre. CAST – Assign Volume In Process / Assign Volume select shot piston head and assign to it Translation condition 6
Pre. CAST – Assign Volume Set a constant velocity in the right direction or press Time in case of a time function piston velocity 7
Pre. CAST – Assign Volume Piston velocity is usually time dependent 8
Pre. CAST – Initial conditions Define the initial temperature 9
Pre. CAST In Run Parameters set Pre-defined Set for HPDC Filling 10
Pre. CAST This parameter has to be 1 for the modeling of shot piston (penetrating mesh) 11
Pro. CAST Save and exit Pre. CAST and run simulation 12
View. CAST 13
Filling using a piston ‘Slow’ first phase ‘Fast’ first phase Entrapped air 14