The Dongguan cutting oil manufacturer would like to share with you some information about the use of cutting lubricants and the cooling spray method.

　　 Dongguan cutting oil manufacturer Let me tell you about the use of cutting lubricants and the cooling spray method.

　　Cutting lubricants can be sprayed onto tools and workpieces in the form of an airborne oil mist. Using small nozzles, the cutting lubricant is dispersed into fine droplets by compressed air at a pressure ranging from 0.069 to 0.552 MPa and then injected into the cutting zone. In this context, water-based cutting lubricants are preferable to oil-based ones, as oil-based lubricants tend to generate oil mist that pollutes the environment, poses health risks, and easily coalesce into larger oil droplets. The spray method is particularly suitable for machining operations involving high cutting speeds and small cutting areas (such as end milling). When selecting a cutting lubricant with excellent cooling performance, note that once these fine droplets come into contact with hot tools, workpieces, or chips, they rapidly evaporate and carry away the heat. Spray cooling does not require splash guards, oil collection trays, or return oil lines—only a small spherical device is needed. As a result, the workpiece remains dry, and even if some oil does adhere to it, it dries off very easily.

　　The spray method has the following advantages:

　　1. The tool life is longer than in dry cutting.

　　2. When there is no overflow system or when it is not suitable for use, this can be used to provide a cooling effect.

　　3. Cutting lubricants can reach places that other methods cannot.

　　4. Between the workpiece and the tool, the flow rate of cutting fluid is higher than that in the overflow method. When calculating cooling efficiency based on the same volume of cutting fluid, the efficiency is many times greater than that achieved by the overflow method.

　　5. Under certain conditions, costs can be reduced.

　　6. You can see the workpiece that has been cut. The downside of spray cooling is its limited cooling capacity, and it also requires ventilation.

　　 Dongguan cutting oil manufacturer Do you know why cutting fluids smell bad?

　　Cutting lubricants are indispensable auxiliary products in machining processes, yet they often develop an unpleasant odor during use. What’s going on? And how can we solve this problem?

　　The cause of the odor in cutting lubricants:

　　1. In the process of preparing cutting fluid, tap water is used for dilution. Since tap water mostly contains pathogens, the prepared cutting fluid will inevitably carry these pathogens.

　　2. Additionally, during the preparation of cutting lubricants, contact with air is inevitable; therefore, airborne pathogens can also enter the cutting lubricant.

　　3. From the current configuration of cutting fluids, it is difficult to control the bacterial entry pathways mentioned above.

　　4. In addition to the formulation of cutting fluids, workpiece handling, operators’ bad habits, and the cleanliness of workshops and coolant tanks, these factors can all influence the proliferation of bacteria in cutting fluids.

　　 Dongguan cutting oil manufacturer Solution:

　　Regarding these issues, for oily cutting oils, we recommend using cutting lubricants with good biostability whenever possible. Additionally, during the use of cutting lubricants, to prevent odor generation and deterioration, you need to perform the following tasks:

　　1. Regularly test the concentration of cutting fluid.

　　A. A refractometer is needed to measure the concentration of cutting fluid, so as to keep the concentration of the cutting fluid within a reasonable range.

　　B. If the concentration of cutting lubricant is too high, it can easily cause skin allergies in operators; if the concentration is too low, it will lead to the rapid proliferation of bacteria.

　　2. Avoid mixing other oils into the cutting lubricant.

　　Since the oil used in machine tools also contains pathogens, it is essential to minimize oil leakage from the machine tools into the cutting lubricant.

　　3. Control the pH value of the cutting lubricant.

　　When the pH value of the cutting fluid is too low, fresh cutting fluid should be added promptly to improve the pH level. When the pH of the cutting fluid ranges from 8.3 to 9.2, bacteria can hardly survive.

　　That’s all for today’s explanation from the Dongguan cutting oil manufacturer. Thank you for watching, and we’ll see you again in the next episode.