Molds & Tooling
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Non-Uniform Internal Density of CMC
Problem Phenomenon
Density difference of ±3% in different parts of CMC products
Cause Analysis
Holding pressure transmission is uneven; areas far from the gate have insufficient holding and low density; regional differences in crystallinity cause different densities
Solution
1)Optimize gate design for uniform holding pressure transmission; 2)Uniform mold temperature to reduce crystallization differences; 3)Multi-point gates to improve holding distribution
Key Takeaway
Non-uniform density is caused by uneven holding; optimizing gate design is the key
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