Is the anti-corrosion effect of metalworking fluid preservatives still stable after long-term use?

After long-term use, the anti-corrosion effect of metalworking fluid preservatives is usually affected by many factors, so its stability is an important issue that needs attention. With the continuous use of the processing fluid, the concentration, physical and chemical properties of the preservative, and the reaction between the preservative and the metal surface will gradually change, thus affecting the durability of the anti-corrosion effect.
The anti-corrosion effect of metalworking fluid preservatives may gradually weaken after a certain period of time. This is because the preservatives in the processing fluid will gradually be consumed or contaminated during long-term use. Metal chips, oil stains, chemicals and microorganisms generated during the processing may react with the preservatives, thereby reducing their anti-corrosion ability. Especially in high temperature or high shear environments, preservatives may decompose or volatilize, causing their anti-corrosion effect to no longer be as strong as when they were fresh.
Changes in the pH value and hardness of the processing fluid may also affect the effect of the preservative. After long-term use, the pH of the processing fluid may fluctuate, and the different sensitivity of the preservative to pH changes may cause its anti-corrosion performance to decrease. As the processing fluid is used, changes in dissolved metal ions and water content may also affect the effect of the preservative.
In order to ensure the stability of the anti-corrosion effect of the preservative after long-term use, regular inspection and timely addition of preservatives are necessary. Regularly testing the preservative concentration of the processing fluid and replenishing it according to the actual situation can effectively avoid the decline of anti-corrosion performance. Some preservative products are also designed with long-term stable addition formulas, which can maintain their anti-corrosion effect for a long time, thereby extending the service life of the processing fluid.
The anti-corrosion effect of metalworking fluid preservatives may decay to a certain extent after long-term use, but through regular inspection, maintenance and appropriate replenishment, the validity period of the preservative can be effectively extended and good anti-corrosion performance can be maintained. Reasonable use and management can ensure that the processing fluid maintains a stable working state for a long time and protects the metal surface from corrosion.