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Why Do Friction Plates Burn?

1 Answers

DiGavin

07/25/25 4:26am

Friction plate burning is essentially the glazing of friction material. Specific reasons for friction plate burning: Due to overheating, transmission oil begins to deteriorate, and the silicon components within it are precipitated and remain in the micropores of the friction material, gradually crystallizing. The crystallization blocks the micropores of the friction material, causing poor microcirculation, reduced breathing capacity, and decreased cooling efficiency. Additionally, a crystalline layer forms on the surface of the friction plate. The friction between this crystalline layer and the steel plate prevents heat dissipation, causing the steel plate to heat up even more and consume the clutch clearance. At this point, the entire set of clutch plates cannot disengage and continues to experience excessive friction, generating tremendous heat that burns the friction material into black carbon, and may even fuse the friction plate and steel plate together. Friction plate wear reaching its limit: When the friction plate wears to the point of needing replacement, the wear sensor transmits the wear information to the vehicle's computer, triggering an alarm to remind the owner to replace the brake friction plates as soon as possible.

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