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The principle of speed segmentation of injection molding process
Suggested principles for the segmentation of speeds in injection molding process are as follows
1. The velocity at the surface of the fluid should be constant;
2. Fast injection should be used to prevent the melt from freezing during injection;
3. The injection speed should be set in such a way that in the critical zone the melt is filled quickly while slowing down at the inlet level.
Fast filling while slowing down at the inlet level;
4. The injection speed of the injection molding process should ensure that the mold cavity is filled and stopped immediately to prevent overfilling.
The injection speed should be stopped as soon as the mold cavity is filled to prevent overfilling, flying edges and residual stresses.
In the injection molding process, the basis for setting speed segments
must take into account the geometry of the mold, other flow limitations and instabilities, etc.
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