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Composition of Boundary Lubricating Film of DWV Reducing Tee C*C*C

2021-09-04

Composition of boundary lubricating film of DWV Reducing Tee C*C*C

Boundary lubrication film is generally composed of fluid oil film, structural oil film, adsorption oil film, solid covering film and the contact part of copper pipe metal and mold.
The junction formed between the metal and the mold only partially contributes to the entire friction, but almost all contributes to wear and surface damage. Therefore, the main function of the lubricant film is to embed a low-shear strength layer that is not easily penetrated between the metal contact surfaces to reduce the tightness of the metal contact. In order to prevent excessive contact, the lubricant layer must not only be able to adhere firmly to the surface, but also must have strong lateral cohesion between the hydrocarbon chains.
Fatty acid is an excellent boundary lubricant, which is mainly manifested in the lateral polymerization strength between lubricant molecules. As the fatty acid itself, its performance is similar to that of liquid hydrocarbon burning in reducing friction and reducing wear. However, when they are used on metal surfaces that can react with them, fatty acids can easily form a metal soap film with the metal surface. This soap film has a strong lateral cohesive force, and its softening point is much higher than the melting point of pure acid. In this way, the formed lubricating film can still provide effective lubrication at higher temperatures. In addition, the metal soap film formed directly on the surface adheres well to the surface of the substrate. Because of its strong lateral polymerization and the ability to withstand sufficient deformation without breaking, fatty acids are a good boundary lubricant in drawing.

DWV Reducing Tee C*C*C