In the winter operation of construction machinery, mining equipment, and various hydraulic systems, antifreeze is considered a crucial medium for ensuring stable operation at low temperatures. However, in actual use, the misuse, improper use, and mixing of different types of antifreeze are not uncommon. These misuse problems often do not manifest immediately but can have serious consequences for equipment safety and system reliability in the long run.
Firstly, using ordinary antifreeze as a hydraulic fluid is one of the most common misconceptions. Some field personnel mistakenly believe that "anything that prevents freezing will do," and directly add automotive coolant or other industrial antifreeze to the hydraulic system. The formulations of these antifreezes focus on heat transfer and freeze prevention, lacking the necessary lubrication, wear resistance, and shear resistance required for hydraulic systems. Long-term use can lead to increased wear on hydraulic pumps, valve spool sticking, and a significant decrease in system efficiency.
Secondly, indiscriminately mixing different types of antifreeze can easily lead to performance imbalances. Hydraulic antifreezes differ significantly in base oil type, additive system, and corrosion protection scheme. If different brands or models are mixed without thoroughly cleaning the system, additive interactions, precipitation, or emulsification may occur, resulting in cloudy fluid, filter clogging, and even accelerated corrosion of metal components.
Thirdly, increasing the concentration to "enhance antifreeze performance" is a risky practice. Some users adjust the antifreeze ratio themselves in extremely cold environments, believing that higher concentrations provide better antifreeze performance. In reality, an excessively high proportion of antifreeze components leads to abnormally increased viscosity, resulting in poorer low-temperature fluidity, increased starting resistance and energy consumption, and also negatively affecting seals and coating materials.
Furthermore, neglecting the differences in equipment operating conditions and environments is also a significant reason for antifreeze misuse. Different equipment has different requirements for hydraulic fluids. For example, high-pressure systems, precision servo systems, or equipment operating continuously for extended periods require higher levels of fluid cleanliness, stability, and anti-aging performance. If antifreeze is selected solely based on ambient temperature, neglecting the system structure and workload, it is very easy to make the wrong choice.
At the management level, the lack of standardized replacement and maintenance procedures also amplifies the risk of misuse. Failure to regularly check the fluid condition, neglecting moisture and impurity control, or failing to verify the correct fluid type when replenishing, will all lead to a gradual deterioration of the antifreeze performance, ultimately affecting the reliability of the entire hydraulic system.
From an industry perspective, to avoid the misuse of antifreeze, the principles of "dedicated fluid for specific applications, standardized selection, and scientific maintenance" should be adhered to. Choosing antifreeze products specifically designed for hydraulic systems, strictly following the equipment manufacturer's and product technical specifications, and completing system checks and fluid assessments before the cold season are essential to truly leverage the protective benefits of antifreeze.
Antifreeze is not simply a seasonal consumable; its proper use directly impacts equipment lifespan and operational safety. Increasing awareness of the risks of antifreeze misuse is a crucial step in ensuring the stable operation of hydraulic systems in low-temperature conditions.
