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Designing for extreme temperatures

Posted by admin on July 25th, 2012

You’ll need to design parts to accommodate the changes in temperature they’ll be exposed to. The following suggestions should help.

Use the proportional limit

Use the proportional limit for the expected exposure temperature in design calculations to avoid permanent distortion of the part.

Allow differential expansion and contraction

Do not rigidly fasten materials with large differences in coefficient of thermal expansion. Use fastening methods that allow for the greater expansion and contraction of the plastics parts. Design for assembly gives recommendations for designing this type of plastic part. Alternatives include slots that allow the free end to expand on one axis while maintaining the location in the other two axes.

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