What is the function of odorless cutting oil?

Flavorless cutting oil is an industrial liquid developed for the cooling and lubrication of tools used in metal cutting and grinding operations, as well as for cooling and lubricating tools and processing parts during manufacturing. This flavorless cutting oil is formulated using a scientifically engineered combination of various high-performance food additives. It boasts excellent performance in terms of cooling system efficiency, lubricant properties, rust-prevention capabilities, oil-cleaning function, anti-corrosion treatment, and ease of dilution. It overcomes the drawbacks of traditional soap-based emulsifiers—such as the tendency to produce unpleasant odors in summer, difficulty in dilution during winter, and poor rust-prevention effects—while having no adverse impact on automotive paint. This oil is particularly suitable for cutting and grinding ferrous metals in China and is a leading domestically produced grinding lubricant. All financial indicators of this flavorless cutting oil outperform those of soap-based oils. It features outstanding cooling, cleaning, and rust-prevention properties, is odorless, non-corrosive to humans, non-corrosive to equipment, and environmentally safe and eco-friendly. Let’s now introduce flavorless cutting oil: What is the mechanism behind its effectiveness?

During the cutting process, the metal acts as a lubricant, reducing friction between the rake face and the chip. The friction between the rake face and the machined surface contributes to the formation of a lubricating film, thereby decreasing cutting forces, frictional forces, and power consumption. This also helps lower the temperature on the tool’s surface, reduce friction between the workpiece blank and the tool parts, minimize tool wear, and enhance the machinability of the workpiece material. During grinding, after the grinding fluid is added, it penetrates into the spaces between the grinding wheel grains and the workpiece, as well as between the grains and the grinding swarf, forming a lubricating film that reduces interfacial friction, prevents wear and clogging of the grinding wheel’s cutting edges, lowers grinding forces and frictional heat, and ultimately improves the durability of the grinding wheel and the surface quality of the workpiece.

The odorless cutting fluid, after being vaporized and cooled, is heated through convection between the tool, grinding wheel, chips, and workpiece. As this odorless cutting fluid vaporizes and cools, it effectively removes cutting heat away from both the tool and the workpiece, thereby significantly reducing the cutting temperature, minimizing thermal deformation of the workpiece and tools, maintaining the hardness of the tools, and improving machining accuracy and tool life. The cooling performance of an odorless cutting fluid is closely related to its thermal conductivity, specific heat capacity, latent heat of vaporization, and viscosity (or fluidity). Water has higher thermal conductivity and specific heat capacity than oil; thus, water exhibits better cooling performance than oil. What is the role of an odorless cutting fluid?

In metal cutting processes, odorless cutting oils are required to have excellent cleaning performance. They can effectively remove chips, swarf, iron powder, and oil sludge, preventing machine tools from contaminating workpieces and cutting tools. This ensures that the cutting edges of tools or grinding wheels remain sharp, thereby maintaining optimal cutting performance. For oil-based cutting oils, the lower the viscosity, the stronger the cleaning ability—especially for cutting oils containing light fractions such as kerosene and diesel, which exhibit superior permeability and cleaning performance. Water-based odorless cutting oils containing surfactants also deliver outstanding cleaning effects. These oils form an adsorption film on surfaces, preventing particles and oil sludge from adhering to workpieces, cutting tools, and grinding wheels. Moreover, they can penetrate the interface where particles and oil sludge are stuck, separating them from the surface and carrying them away with the odorless cutting oil, thus keeping the interface clean. Now, let’s introduce odorless cutting oils and discuss their functions. What exactly is the role of odorless cutting oils?