// multi-utility computation suite · offline · instant · precise
┌──────────────────────────┐
│ [c] calcalyst_ │
│ computation suite │
└──────────────────────────┘
// select a module to initialize
/ search↵ open firstesc close
// adsenseEMPTY_LEADER_SLOT728×90
// adsenseMOBILE_ANCHOR_SLOT320×50
// keyboard_shortcuts
/focus search
↑↓navigate module list
Enter
open first result from search
open highlighted
compute when module is open
compute when focused in a field
Escclose module · clear selection
⌫
eng.injection-molding-pressure Calculator
Calculates injection moulding pressure requirements from material viscosity, part geometry, gate dimensions, and flow length. Injection pressure typically ranges from 70–200 MPa — thin-walled parts and long flow paths require higher pressures.
Inputs
Melt Viscosity Pas
Fluid resistance to flow. Water at 20°C: ~1 cP. Honey: 2,000–10,000 cP. Higher viscosity increases pumping power requirements.
Fill Velocity Mm S
Speed in a specified direction (m/s). Required for momentum, kinetic energy, and wave calculations.
Part Thickness Mm
Perpendicular measurement through the material. For insulation: thicker is better. For beams: directly affects bending resistance.
Flow Length Mm
Linear measurement. Ensure consistent units: 1 m = 1,000 mm = 3.281 ft.
Results
injection pressure (MPa)
Sample size or count used in the calculation.
shear rate (1/s)
The value at the specified point or condition.
shear stress (Pa)
Internal force per unit area (Pa or MPa). Must stay below yield strength in service. Beyond yield: permanent deformation. Beyond tensile strength: fracture.
dP = 12ηvL/t²
Reference formula or conversion factor shown for context.