What material is the clutch friction plate made of?
2 Answers
The clutch friction plate is made of powder metallurgy materials, asbestos-based materials, and paper-based materials. Powder metallurgy materials have higher allowable surface temperature, allowable pressure, friction coefficient at high temperatures, and longer service life. Asbestos-based materials are formed by molding asbestos with binders and fillers, then fixed to a steel or iron base plate, with a lower allowable working temperature. Paper-based materials are made by interweaving asbestos, plant fibers, or a mixture of both, then bonded with fillers and resins. The friction plate is a key component of the friction clutch, and the physical and mechanical properties of its working surface material directly affect the clutch's performance. The main requirements for the material are: a high and stable friction coefficient, with the dynamic friction coefficient as close as possible to the static friction coefficient, high strength, ability to withstand impact, and resistance to cracking and peeling at high speeds.
As an automotive technology enthusiast, I'm fascinated by the friction materials used in clutch plates. They're typically made of composite materials, such as organic fiber-reinforced resins or semi-metallic mixtures like copper powder and steel particles embedded in resin. These materials must have a high coefficient of friction to ensure smooth power transfer from the engine to the transmission, while also being heat-resistant—often needing to withstand temperatures above 400°C to prevent burning out in stop-and-go traffic. Modern vehicles have largely phased out asbestos, opting for eco-friendly organic alternatives like Kevlar, but these tend to show noticeable slippage when worn, affecting launch response. Choosing the right material can extend service life and reduce replacement frequency—I always emphasize checking for oil contamination on the friction material and keeping it clean to prevent failures. High-performance cars may even use ceramic or carbon fiber plates, which are lightweight and durable, ideal for frequent clutch operation. Ultimately, the quality of the material directly impacts driving smoothness and safety—don't skimp on this.
