Processing Machinery
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PPO Printer and Copier Part Thermal Deformation
Problem Phenomenon
Internal parts of PPO printers and copiers deform after long-term heating, transmission accuracy decreases, and paper jam failure rate rises.
Cause Analysis
Local high temperature inside the equipment approaches the upper limit of PPO use temperature; long-term thermal load creep accumulates; uneven part wall thickness causes asymmetric deformation; assembly stress and thermal stress superimpose.
Solution
①Select material with margin according to the actual temperature field of the equipment; ②uniform wall thickness design; ③low-stress assembly; ④verify service life with thermal aging creep data.; After adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
PPO office equipment parts must be designed according to the actual thermal environment; creep is the invisible enemy of long-term accuracy; temperature field measurement is more reliable than theoretical estimation.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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