Subject: Ball pressure test of thermoplastic parts

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My interpretation of the rationale is from my 60335 experience.  The idea is the same as Mold Stress testing.  When molded, Polymeric materials have stress lines/points in them.  The temperature exposure relieves these stresses which can move the material.  The temperature is higher for polymeric parts supporting live parts vs an enclosure.  We’re looking for reduction of … Continue reading “Subject: Ball pressure test of thermoplastic parts”