- 産業: Software
- Number of terms: 1241
- Number of blossaries: 0
- Company Profile:
Moldflow develops plastic injection molding software.
Also known as decompression or pull-back, suck back is a technique used to clear polymer from the injection nozzle by moving the screw away from the nozzle.
Industry:Software
Also known as silver streaks. There are a few different types:
*Moisture - Streaking occurs opposite the flow direction, due to a high residual moisture content. Drying the material properly will remove this defect.
Air - Air is trapped and cannot escape while the mold is filling. The air is drawn to the surface and stretched in the direction of the flow causing streak marks.
Industry:Software
An insert is a component that is placed into the mold before the injection phase and is anchored into the plastic part by being partially or wholly surrounded by the injected plastic. Typical inserts may have threads, may be electrically conductive, or may be a different plastic material.
Industry:Software
An isotropic material has material properties that are the same in all directions. There are no directional effects of orientation or crystallinity.
Industry:Software
An open loop controller does not respond to measurements of the value being controlled.
See closed loop controller.
Industry:Software
An orthotropic material consists of either oriented fibers or oriented polymer chains. Mechanical properties in the direction parallel to the orientation are different from those in the perpendicular direction.
Industry:Software
Consists of three-node triangular elements located at the half-thickness of the part surface.
Creating a Midplane mesh from a solid model involves extracting the mesh and the element thickness from the model. The two-dimensional Midplane mesh represent the solid model, using the thickness information, during a molding analysis.
Industry:Software
Designates the transition from one phase to another, for example, the transition from the filling phase to the packing phase. Various switch-over methods can be used.
For example, fill-to-pack switch-over can be initiated when the injection time or pressure reaches a specified value, when a specified percentage of the volume is filled, or when other conditions are met.
Industry:Software
During shear flow, polymer molecules align themselves in the direction of flow. The extent of this orientation depends on the shear rate to which the material is subjected and the temperature of the melt. When the material stops flowing, the induced molecular orientation begins to relax at a rate dependent on the material's relaxation time and temperature. If the material freezes before relaxation is complete, the molecular orientation is "frozen in".
Frozen-in orientation affects the mechanical properties of the material and also the shrinkage in the direction of material orientation. For a given element, the mechanical properties and the amount of shrinkage are different in directions parallel and perpendicular to the direction of material orientation.
Industry:Software
Excessive tooling noise may occur due to molding problems where the injection pressure is too high toward the end of the velocity phase. Excessive tooling noise may lead to tool damage after repeated usage.
Industry:Software
