- 産業: Software
- Number of terms: 1241
- Number of blossaries: 0
- Company Profile:
Moldflow develops plastic injection molding software.
The time required for the injection moulding machine to fill the part.
Industry:Software
The transition temperature is the polymer freeze temperature. At this temperature, the melt-to-solid transition occurs.
The transition temperature corresponds to the glass-transition temperature (Tg) for amorphous materials and to the crystallisation temperature (Tc) for semi-crystalline polymers.
Industry:Software
The velocity profile is a graph made up of set points joined by lines. The set points determine the velocity to be used at specific displacement measurements. The velocity profile controls how the part is filled during the injection stage of a cycle.
Industry:Software
The velocity stroke is the distance between the screw back position and the velocity to pressure change-over position in an injection moulding machine. This is the proportion of the total stroke performed under velocity control.
Industry:Software
The viscosity of a material is a measure of its resistance to flow within a mould cavity.
Industry:Software
The viscosity of polymers is dependent on temperature, pressure and shear rate. The relationship of the variables can be described by one of several equations, called models. For this product you can use either the Cross-WLF or the Second Order model.
Industry:Software
The viscosity of the material at 1000 1/s shear rate and at a specified temperature.
For example, VI(240)125 means that the material has a viscosity of 125 Pa.s at a shear rate of 1000 1/s and a temperature of 240C.
The viscosity index is used to compare the viscosity of one material to another.
Industry:Software
The zero screw position is the furthest forward position possible for the screw. This is when the end of the screw is in contact with the barrel or hits machine 'stops'.
Industry:Software
Thermal degradation is a break down of material quality, resulting in poor parts. Thermal degradation may occur if the barrel temperatures are too high, the rotational speed of the screw is too fast, or the nozzle diameter is too small.
Industry:Software
These curves and the surfaces that are formed from them follow no mathematical relationship.
Industry:Software
