Processing Machinery
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PA66 engine decorative cover
Problembeschreibung
The engine decorative cover deforms and loses gloss after long-term high temperature
Ursachenanalyse
The cover is close to the heat source, ordinary grades lose gloss and deform from thermal aging, and failure occurs first at fixing point stress concentrations; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based only on experience
Lösung
Select glass fiber reinforced heat-stabilized grades; add metal bushings at fixing points; add heat insulation pads between the cover and heat source; after adjustment, take continuous samples to verify the effect, confirm stability before resuming mass production
Wichtigste Erkenntnis
Engine covers require heat-stabilized grades plus heat insulation design; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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