- #1
wan2juice
- 1
- 0
Skrambles said:
The shot size for injection molding is calculated by multiplying the part volume by the desired number of cavities and adding a 10% buffer for safety. The part volume is calculated by multiplying the part's projected area by its wall thickness. The projected area is calculated by multiplying the part's maximum projected length and width.
The cycle time for injection molding is the total time it takes to complete one injection molding cycle, which includes filling, cooling, and ejection of the part. It is calculated by adding the filling time, cooling time, and ejection time.
The clamp force for injection molding is calculated by multiplying the projected area of the part by the desired clamping pressure. The projected area is calculated by multiplying the part's maximum projected length and width. The desired clamping pressure is typically determined by the material being used and the size of the part.
The shrinkage rate for injection molded parts varies depending on the material and part design, but it is typically between 0.5-2%. It is important to account for shrinkage when designing a part to ensure proper fit and functionality.
The cooling time for injection molding is calculated by determining the time it takes for the plastic to solidify and cool enough for the part to be ejected without deformation. This can be estimated by multiplying the part's wall thickness by a cooling time constant, which is dependent on the material being used.
