Clutch friction material friction material classification
According to the different media used in the friction material, we usually divide the friction material into two types: wet type and dry type. In simple terms, the dry type means that the friction material works in the air, and the common one is the clutch plate of the so-called dry clutch. Dry friction plates can be roughly divided into so-called organic friction materials and powder metallurgy friction materials (also known as ceramic friction materials in the industry) according to the main materials used. The organic film uses organic polymer compounds as the binder; and the powder The metallurgical friction plate is characterized by sintering without organic binder.
The wet type is that the friction material works in various oils. For example, the friction material on the synchronizer works in the transmission oil, and the clutch of the automatic transmission also works in the ATF oil. At present, paper-based friction plates have the advantage of lower cost while still showing excellent performance, so they are being used more and more widely. Moreover, this is also one of the current shortcomings in China and one of the biggest obstacles to the localization of automatic transmissions. The picture below shows the latest generation of BorgWarner wet friction plates used in Ford's new generation 10-speed gearbox. It is an authentic high-tech gadget with full technical content.
