Wear of dowty retarder parts

When the dowty retarder parts are used on site, all parts will be worn. For example, after machining, the metal surface of retarder bushing, sliding cylinder, piston, piston rod and other parts are still uneven from the microscopic point of view. After the contact between the two metal surfaces, the peak of the micro convex body forms point contact, and when the parts are rolled by the wheel, the metal surface is still uneven, Plastic flow occurs in the contact. Under the action of tangential tension, the contact will break, which is equivalent to that the micro convex body on the metal surface is adhered away, so the metal loss on the surface of the parts occurs, At the same time, new cold work hardening joints are formed on the metal surface of parts.

When the dowty retarder is working, the wear debris, dust and gravel in the environment caused by the wear of the parts and components, as well as the broken eyebrows falling off the oxide between the friction pairs, will enter the oil and sliding interface surface, like a planer, so that the metal surface is grooved, which will cause the reducer housing bushing sliding oil cylinder assembly. The piston assembly is worn and strained, which will make the dowty retarder lose braking power seriously. Corrosive wear is caused by chemical elements invading into friction pairs and cavitation erosion on metal surface caused by fluid medium, followed by erosion wear caused by gravel impact on solid surface