The formula and use of aluminum alloy CNC machining cutting fluid are basically the same as ordinary cutting fluid, but the selection of dilution water should be more stringent. Because many aluminum ions in the water will cause corrosion, if the content of these ions is too high, it will reduce the anti-rust performance of the cutting fluid, especially rust in the processing room, such as chloride ions, sulfate ions and heavy metal ions. In addition, some ions will react with the rust inhibitor of aluminum cutting fluid, reducing the rust resistance and stability of the cutting fluid, such as calcium and magnesium ions. Therefore, try to choose dilution water with lower hardness, or soften the diluted ion exchange water to ensure the use effect and life of the cutting fluid.
In addition to the daily maintenance of the cutting fluid, the following points should be noted for the maintenance of aluminum alloy CNC machining cutting fluid:
1. Filtration
Due to the stability of the aluminum alloy aluminum soap reaction, the cutting fluid is easily damaged under alkaline conditions. The aluminum chips, aluminum chips and cutting fluid should be filtered out immediately to avoid re-reaction and affect the use effect and life of the cutting fluid. The aluminum chips produced during the grinding process are small and light, and it is difficult to continue to precipitate. If they are not filtered or filtered insufficiently, the aluminum chips processing area will be taken away with the cutting fluid circulation system, and the surface will be scratched, affecting the glossiness of the processed surface.
2. pH value
Since aluminum cutting fluid is very sensitive to pH value, the pH value of aluminum cutting fluid should be tested regularly, and if abnormalities are found, they should be adjusted in time. Use pH control at 8-9 pH value to prevent excessive corrosion of the workpiece or too low pH value to cause bacteria to multiply, affecting the stability and performance of the cutting fluid.
3. Regularly add new solutions
Ensure both good lubricity of the cutting fluid and good anti-rust and anti-corrosion properties of the cutting fluid, and extend the service life of the cutting fluid.
Conclusion
It is extremely important to select cutting fluid for aluminum alloy CNC machining. It is necessary to ensure good lubricity and corrosion resistance of the cutting fluid, as well as good stability, filterability and easy maintenance. Only in this way can the requirements of the processed products be met and the cost of cutting fluid can be minimized.
