Cooling Lubricants | Viscosity of Water-Based Cooling Lubricants
The viscosity of a cooling lubricant is an important characteristic for its transport and protective properties. Using ViscoQC 300 the viscosity of a water-based cooling lubricant can be determined at different shear rates to predict its behavior in a piping system.
In modern manufacturing processes, particularly in metal cutting and forming operations, cooling lubricants play a critical dual role: they reduce friction between tool and workpiece while simultaneously dissipating heat generated during machining. The efficiency of these functions is heavily influenced by the physical properties of the lubricant, with viscosity being one of the most significant parameters. Higher viscosity leads to a thicker lubricating film, which improves wear protection, while lower viscosity allows for easier transportation through piping systems and better heat dissipation.
Water-based cooling lubricants
Water-based cooling lubricants are intended for use in metalworking processes such as drilling, milling, and grinding, offering effective heat dissipation, lubrication, and chip removal. These lubricants typically consist of a high percentage of water combined with a concentrate containing emulsifiers, corrosion inhibitors, biocides, anti-foaming agents, and extreme pressure additives. Due to their formulation, they are environmentally friendly and reduce potential risks associated with handling, disposal, and accidental release.
Experimental
The viscosities of 1% and 5% (v/v) water-based cooling lubricant concentrate 1 (C1) solution and 10% (v/v) water-based cooling lubricant concentrate 2 (C2) solution (solvent: water) were measured at different temperatures and shear rates using ViscoQC 300-L with temperature device PTD 100 Cone-Plate and software package V-Curve.
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