Thermic calculations
Generalities
Basic rules for cartridge
Adjustment of the CCHC
Mould heating example
Heat loss by natural convection

 

 

Example of calculation
of power in order to heat a steel mould.


Technical data > Thermic calculations > Mould heating example > Calculation of the thermal balance

2. Necessary power for plastic heating during the working phase.
 

     F2 = 94 W

Where :

M      = plastic mass in kg
         = 0,050 kg

Cp     = plastic specific heat (polycarbonate)
         = 0,3 kcal/kg.K

DT     = 180°C
tc      = cycle time of a piece