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Why part size isn't stable in production?

Source:MUYOUNG MOULDVisit:-Release time:2012-10-19 15:22

Analysis: Only part get stable weight can get stable size, but sometime its size isn't stable even its weight is stable. Actually, the part size depend on its filling process and cooling process, Different mold filling pressure and cooling rate result in different level of in-mold stresses resulting different warpage and distortion, that is, result different part size.
Conclusion: If the part size isn't stable, checking the cooling circuit is the first thing we need to do, we need test if the cooling circuit have a stable cooling rate. if the cooling rate have no problem, then we check and adjust the molding condition and filling condition to get stable part size.

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