Tappet phosphating refers to the phosphating treatment of engine tappets, which forms a layer of phosphate chemical conversion film on the surface of the tappets through chemical and electrochemical reactions.
Purpose: To improve the wear resistance and corrosion resistance of the tappets, reduce wear during the contact and friction process between the tappets and components such as camshafts, and extend their service life. At the same time, the phosphating film can also play a certain lubricating role, reduce the friction coefficient, and improve the working performance of the tappets. In addition, if the tappets have subsequent surface treatment requirements such as painting, phosphating treatment can improve the adhesion of the coating.
Tappet DLC coating refers to a treatment technology that applies Diamond-Like Carbon (DLC) coating on the surface of engine tappets.
Characteristics of DLC coating: DLC coating has diamond-like high hardness, low friction coefficient, good wear resistance and corrosion resistance, and also has certain toughness, which can adapt to the high-frequency contact and friction environment between tappets and components such as camshafts.
Main functions:
- Significantly improve the wear resistance of the tappet, reduce wear when in contact with the camshaft, and extend the service life of the tappet and related components.
- The low friction coefficient can reduce friction loss, help improve engine efficiency and reduce energy consumption.
- Good corrosion resistance protects the tappet from erosion by oil, coolant, etc., and maintains its working stability.
Application advantages: Compared with traditional surface treatment processes such as phosphating and nitriding, DLC coating performs better under extreme working conditions (such as high temperature, high pressure, and high-speed friction). It is especially suitable for high-performance engines and can meet higher requirements for reliability and durability.