What are the adverse consequences of the aluminum cutting fluid used to process aluminum and various aluminum alloys when the pH is too low (neutral or acidic) 0~7? How to prevent the occurrence of these adverse consequences?
The cutting fluid is made up of most organic substances. These organic substances mainly include base oil, mineral oil, fatty acid, etc. They are diluted in water and easily undergo qualitative transformation due to the action of ozone. If the pH is too low, bacteria may breed, even if it is In the presence of a large amount of fungicide, the efficacy of the biocide will be greatly reduced due to the low pH of the cutting fluid system. From this point of view, the ph value of the aluminum alloy cutting fluid is too low, which will cause the cutting fluid to deteriorate and odor, and the service life is shortened.
In addition, the processing equipment used to process aluminum alloy and aluminum workpieces is composed of facsimile parts of steel parts. These parts have poor rust resistance and are easily oxidized under the action of water and oxygen in the cutting fluid. Corrosion, even if more rust inhibitor is added to the aluminum cutting fluid, if the ph value can't keep up, it is no good. According to Idawell's law: the anti-oxidation and anti-rust effect of the rust inhibitor should be protected by the alkaline environment. When ph is too low in acidity and alkalinity, its rust prevention effect is the worst, and even rust prevention performance is invalid.
To prevent these adverse effects, only the ph of the aluminum alloy cutting fluid can be improved. The increase of the ph value of the aluminum alloy cutting fluid must be added with a strong alkaline substance, which must be considered for its corrosiveness to aluminum alloy and aluminum.