MOLDFLOW. Early moldflow mainly used in structural strength calculation and aerospace industry, and CAE applications in all fields vary. But used in plastic injection and plastic mold industry in Taiwan is called CAE mold flow analysis, which was first used by the literal translation from the original MOLDFLOW.

■ moldflow molding optimization example - to solve the trapped gas burning

>> Concept moldflow in cavitation;

This result indicates that the region is a fluid ends share or two shares of two or more regions meet, bubble suppressed in this area.

The results highlighted areas of the region may generate pores.

>> Bubble causes:

1, unbalanced filling: Filling occurs when several flow paths around the end and compressed air bubbles. As shown, the two flow paths in the flow faster product flow corner encounter with slower flow path, compressed air bubble formation.

2, racetrack effect: Principles class for this effect are as defined above.

3, the stagnation: the following example the top surface is thin, both sides of the thick, which would form a compressed air bag in the middle part of the front. At the end of the filling gas emissions are not sufficient.

Note: The bubble can cause a short shot and injection pressure is too large defects, and easy to produce spots on the surface of the filling end. The compressed gas in the air bag may be pressurized, heated and cause localized burning.

>> How to improve:

The main causes of the pores are filled with the end of a few bubbles around and compression caused by the flow balance is the key to solving the pores:

1. The use of diversion or choke l

2. Change the product flesh l

3. Change into the pouring position l

If bubbles still exist, we should put them rushed to easily exclude or ejection mechanism can use the site exclusion.

>> CAE Technical summary:

By simulating mold flow analysis software, you can easily see if there is trapped air problem, then prepare an initial improvement program to improve the method according to the above, then moldflow simulation verification, the mold flow analysis and its analysis and comparison, so you can take advantage of virtual simulation moldflow and saves tryout costs. This is moldflow been able to get more and more people recognize the reasons.