What is an antiwear agent


In boundary lubrication, when the metal surface is only under moderate load, if an additive can be adsorbed on the metal surface or wear violently with the metal surface, this additive is called an anti-wear additive. When the metal surface is under a high load, a large number of metal surfaces are in direct contact, generating a large amount of heat, and the film formed by the anti-wear agent is also destroyed, and no longer plays the role of protecting the metal surface. If an additive can play a role in the metal surface The chemical reaction generates a chemical reaction film, which plays a lubricating role and prevents the metal surface from being scratched or even welded. This most severe boundary lubrication is usually called extreme pressure lubrication, and this additive is called extreme pressure additive.

antiwear agent For sale

Extreme pressure antiwear agent is an important grease additive, most of which are some compounds containing sulfur, phosphorus, chlorine, lead and molybdenum. In general, chlorine and sulfur can improve the load bearing capacity of grease and prevent the metal surface from sintering, biting, and scratching under high load conditions; while phosphorus and organometallic salts have higher anti-wear properties. ability to prevent or reduce wear on metal surfaces under moderate load conditions. In practical applications, it is usually better to mix different types of extreme pressure antiwear agents in a certain proportion. Generally, phosphides have anti-wear properties, and dichlorides and sulfides have extreme pressure properties. At the same time chlorine and phosphorus or sulfur-containing compounds, both extreme pressure and anti-wear properties.

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