Incompatible "symptoms" occur in lubricants:
1. Oil film strength is affected: wear increases, temperature increases, heat, vibration or sound.
2. Demulsification ability decreases: Lubricating oil has good demulsification ability originally - contact with water can also be quickly separated from water, but after mixing, the demulsification ability of lubricating oil is not good, and the phenomenon of emulsification of lubricating oil appears.
3. Color change: In the course of use, the color and transparency of lubricating oil change normally with the use. However, the phenomenon of color change, transparency decrease and lubricating oil darkening occurs before lubricating oil is used very little. Whether incompatible lubricating oil should be introduced or not should be considered.
4. bubble problem: one of the symptoms that the incompatibility of lubricants may cause is the ability of lubricating oil to deal with the air: it is shown that the foam resistance is reduced, the air in the oil is not discharged, and the foam increases.
5. The emergence of insoluble substances: flocculent substances, precipitation of additives, paint film, sludge, sediment, oil surface drops, leaving a dirt layer in the mirror or oil pool, oil filter blockage in advance, these may be by-products of incompatibility of lubricating oil.
Which situations should be alerted to the incompatibility of lubricants:
1. Oil mergers: For example, you are using 10 different lubricants. Now you are adjusting to reduce the number of oils in use to several or fewer. Oil mergers and unification have its advantages, but special attention should be paid to the compatibility of oil exchanges.
2. Replacement of oil suppliers: If you change another lubricant supplier, or change the brand of lubricant.
3. Upgrade oil products: Machines have higher requirements for lubricants, oil products upgrade or change to special oil products.
4. Pay attention to new machines and reassembled machines: the inner surfaces of these machines are coated with anticorrosive coatings, or some lubricants you may not know, so don't ignore them.
5. Human factors: which employees are responsible for lubrication? Do they know that lubricants cannot be mixed freely? Equipment lubrication should be handed over to the person who made the lubrication work, and the corresponding error-proof/warning signs should be marked.
Why is it incompatible?
Lubricant = base oil + additive. Lubricating oil is incompatible in the following cases:
1. When different base oils are mixed, reactions occur between base oils, resulting in poor solubility of additives.
2. Chemical reactions occur between different base oils, or the base oils are mutually exclusive.
3. Base oil reacts with foreign additives and produces intermediate products.
4. Different additives are incompatible, resulting in insoluble products in base oils.
5. Different additives neutralize each other, weakening or even changing the original role of additives.