A review on wear failure of hydraulic components: existing problems and possible solutions

This article comprehensively reviews the causes of wear of hydraulic components used in hydro-static transmission systems and their remedies by thermal coating processes. The wear of critical components of the hydraulic pump and motors, hydraulic valves, etc, is mainly due to abrasion, erosion, and cavitation. The most commonly found modes of wear in hydraulic components are contamination and abrasion wear. Such wear arresting can be done by using the surface coating and texturing of materials over the wear zones of the damaged parts. This article discusses the causes of wear in hydraulic components and suggests various solutions to reduce such wear. Recent challenges associated with the proposed solution for wear arresting and future scopes are identified in this review. In the end, some novel techniques for the treatment of wear in hydraulic components, such as laser beam treatment, plasma, Tungsten inert gas arc, and Electric discharge coating, have been discussed, which is the potential future work for enhancing the useful life of hydraulic components. These surface treatment methodologies can be applied to alter the surfaces of crucial hydraulic components that experience considerable wear, as seen in hydraulic pumps, valves, and other elements such as hydraulic cylinders.