How do Anti-wear Additives Work?
What is AW Additive?
AW additive stands for Anti-Wear additive, which is a type of chemical compound added to lubricants to prevent wear on the surfaces of mechanical components that operate under high load and friction conditions. These additives are essential in protecting machinery by forming a protective film on metal surfaces, thereby reducing direct metal-to-metal contact.
Features of AW Additive
Chemical Reactivity: AW additives are designed to be chemically reactive under specific conditions, particularly at high pressures and temperatures where they form a protective layer on metal surfaces.
Protective Film Formation: They form a sacrificial film that can significantly reduce the wear and tear on machinery components.
Self-Repairing: The protective film can regenerate as it is worn away, thanks to the continuous activation of more additives under operating conditions.
Friction Reduction: By preventing metal-to-metal contact, these additives reduce friction, which helps in improving the efficiency and lifespan of machinery.
Compatibility: AW additives are compatible with other types of additives, enhancing the overall performance of lubricants through synergistic effects.
Environmental Impact: Traditional AW additives like ZDDP have environmental implications, which has spurred the development of newer, more environmentally friendly alternatives.
Applications of AW Additives
AW additives are used in a wide range of applications across various industries, including:
Automotive Lubricants: Used in engine oils, transmission fluids, and differential lubricants to protect engine parts, gears, and bearings from wear.
Industrial Lubricants: Found in hydraulic fluids, gear oils, and greases used in manufacturing equipment, heavy machinery, and processing plants.
Aerospace: Utilized in lubricants for aircraft engines and hydraulic systems to ensure reliability and performance under extreme conditions.
Marine: Included in lubricants for ship engines and equipment to protect against the harsh conditions of marine environments.
Energy Sector: Used in turbine oils and other lubricants in power generation facilities, including wind turbines and conventional power plants.
How do Anti-Wear Additives Work?
Activation: AW additives activate under high pressure and temperature, typically at points of significant metal-to-metal contact within machinery.
Chemical Reaction: Upon activation, these additives chemically react with the metal surfaces to form a thin, protective film. For instance, ZDDP decomposes to form a film of zinc and phosphorus compounds.
Film Formation: This film acts as a physical barrier that prevents direct contact between metal surfaces, thereby reducing wear.
Continuous Protection: As the protective film wears down, more additive is activated to replenish and maintain the film, ensuring ongoing protection against wear.
Enhanced Performance: By reducing friction and wear, AW additives help maintain the mechanical efficiency and prolong the life of both the lubricant and the machinery components.
Supplier of AW Additives
UNPChemicals is a professional Molybdenum AW Additive manufacturer and factory has rich experience in bulk manufacturing anti wear additives and lubricant additives for different grades and applications. If you are looking for AW Additive, feel free to contact us.