Required Clamp Force

Required clamp force affects machine selection for die casting (see Machine Feasibility and Selection for Sand Casting). It is calculated with the following formula:

Required Clamp Force =

((Parting Line Projected Area * Number of Cavities) + Runner Area) *

Material Clamp Force * Clamp Safety Factor / 1000

Required clamp force depends on the following factors:

• Parting line projected area (obtained from GCD extraction)

• Number of cavities (see Number of Mold Cavities)

• Runner area (see formula below)

• Clamping force associated with the material

• Clamp safety factor

Runner Area = Number of Cavities *

(Part Length + Part Width) * (Maximum Wall Thickness + 1.5)

Runner area depends on the following:

• Number of cavities (see Number of Mold Cavities)

• Part dimensions (obtained from GCD extraction)

Maximum wall thickness (obtained from GCD extraction)