The formulation and use of aluminum cnc machining cutting fluid is basically the same as that of ordinary cutting fluid, but the selection of dilution water should be more strict. Because many aluminum ions in the water can have a corrosive effect, if the content of these ions is too high it will reduce the rust prevention performance of the cutting fluid, especially rusting between machining, such as chloride ions, sulfate ions and heavy metal ions.
In addition, certain ions will react with the rust inhibitor of the aluminum cutting fluid and reduce the rust resistance and stability of the cutting fluid, such as the occurrence of calcium and magnesium ions. So try to choose diluted water with less hardness, or diluted ion exchange water softening to ensure the cutting fluid's use effect and life.
Aluminum cnc machining cutting fluid maintenance in addition to the daily maintenance of cutting fluid, but also need to pay attention to the following points.
1, filtration
Due to the stability of aluminum alloy aluminum soap reaction, the cutting fluid is easily damaged under alkaline conditions. Aluminum chips, aluminum shavings and cutting fluid should be filtered out immediately so that the reaction does not occur again and affect the use effect and life of the cutting fluid. The aluminum chips ground out during the grinding process are small and light, and it is difficult to continue to precipitate. If not filtered or not sufficiently filtered, the aluminum chips processing area will be taken away with the cutting fluid circulation system, while scratching the surface and affecting the gloss of the processed surface.
2、ph value
As the aluminum cutting fluid is very sensitive to ph value, therefore, the ph value of aluminum cutting fluid should be tested regularly and adjusted in time if abnormalities are found. Use ph control at 8-9 ph value to avoid excessive corrosion of the workpiece or ph value is too low to make bacteria multiply and affect the stability and performance of the cutting fluid.
3、Add new programs regularly
Not only ensure the good lubrication of cutting fluid, but also ensure the good antirust and anticorrosion performance of cutting fluid to prolong the service life of cutting fluid.