Simple Solutions That Work! Issue 10

Contact: DAVID C. SCHMIDT [email protected] Assuming the runner is rectangular in cross section, you can enter one dimension and press the Calc button to have the system calculate the other dimension of the runner. The program needs to know the height from the top of the mold to the center of this gate. If there is more than one gate per casting, then the system will ask what percentage of the flow is to pass through each gate. For example, the flow might be divided equally between two gates, which would be 50%-50%, or this could be allocated 40%-60% depending on casting geometry. This data establishes flow rate and velocity at this gate, which makes it possible to calculate the required area. Assuming the gate is rectangular in cross section, you can enter one dimension and have the system calculate the other dimension of the gate. This procedure can be duplicated for each unique gate within the gating system, so that all gates can be designed using this window. Figure 3. Runner Design. Figure 4. Gate Design. 34