Oil-based cutting fluid is not easy to deteriorate during use. It is a long-term use and easy-to-manage cutting fluid. Generally, it only needs to be refilled regularly to maintain sufficient circulating oil. The so-called easy management is only relative to water-based cutting fluids. In order to maintain the performance of oil-based cutting fluid for a long time, strengthening management is also necessary.
When injecting new cutting fluid, the oil tank must be cleaned in advance to remove chips, sludge, sludge, etc. If the new cutting fluid is mixed with deteriorated cutting fluid, oil, etc., it will accelerate the deterioration of the new fluid. When changing to another cutting fluid during use, check the compatibility and performance changes of the two cutting fluids in advance. If incompatibility or performance decreases after mixing, the former cutting fluid must be removed beforehand. Change to the latter cutting fluid. 1. The following issues must be paid attention to in the use and management of oil-based cutting fluid (1) The lubricity and corrosion inhibition are reduced due to the mixing of water. (2) The performance is reduced due to the reduction of active ingredients due to the mixing of oil leakage. (3) The accumulation of fine cutting chips, iron powder, and sludge causes the performance of the cutting fluid to deteriorate. (4) The copper alloy used in the bearing parts of the machine tool and the liquid supply pump has blackened and corroded. 2. About the reason why water is mixed into cutting fluid Regarding the reason why water is mixed into the cutting fluid, the main reason is that the previous process is a water-based cutting fluid, and the water is brought in by the workpiece, or when a machine tool that has used water-based cutting fluid is switched to an oil-based cutting fluid, water accumulates in the tank and pipes. In order to remove the water adhering to the workpiece and the machine tool, it must be treated with a water-replaceable anti-rust oil and cleaning oil, and the water is taken away by the replaceable anti-rust oil or cleaning oil.
3. What should I do if the oil-based cutting fluid is mixed with water?
The oil-based cutting fluid mixed with a small amount of water can be heated and evaporated, and then adsorbed and filtered by activated clay, and can be reused; if the cutting performance decreases, some additives can be appropriately supplemented, such as the addition of 10% JQ-1 precision cutting lubrication Or JQ-2 extreme pressure cutting lubricant, you can restore the original performance. 4. Beware of the mixing of oil spills In the management of oil-based cutting fluids, special attention should be paid to the mixing of oil leaks. Since the oil-based cutting fluid and the hydraulic oil and lubricating oil used in the machine tool are the same mineral oil, it is not possible to judge whether there is any leakage or mixing from the appearance. The concentration of additives in hydraulic oil and general lubricating oil is lower than that in oil-based cutting fluid. If a large amount of lubricating oil is mixed into oil-based cutting fluid, the concentration of additives will decrease, resulting in reduced cutting performance and shortened tool life. Generally, if the amount of mixed oil exceeds 30% by mass, the performance of the oil-based cutting fluid will be significantly reduced. At this time, it is necessary to add additives or degrade the oil. Therefore, in order to maintain the performance of oil-based cutting fluids, the mixing of oil leakage must be minimized.
