In the field of engineering construction, excavators often face various complex working environments, among which high-temperature operation is a situation that requires special attention. Generally speaking, when the following situations occur, the excavator can be considered to be in a high-temperature working state. First, from an environmental perspective, when the external ambient temperature reaches 35 degrees Celsius or above, it is operating in a high-temperature environment. In such a high-temperature environment, the air temperature around the excavator is high, which is not conducive to the heat dissipation of the equipment. Key components such as the engine and hydraulic system will generate a lot of heat during operation, and the high-temperature environment puts greater pressure on the cooling system, making it difficult for the heat to be quickly dissipated, which can easily lead to an increase in the temperature of the equipment.
Secondly, observing the engine water temperature is an important indicator. Normally, when the excavator engine water temperature exceeds 95 degrees Celsius, it can be considered to be in a high-temperature working state. During normal operation, the engine water temperature should be maintained between 80 degrees Celsius and 95 degrees Celsius. If the water temperature continues to rise, the engine may overheat, which will not only affect the engine performance and reduce power output, but may also cause serious damage to the engine and shorten its service life.
Furthermore, the hydraulic oil temperature is also a key factor in judgment. When the hydraulic oil temperature exceeds 80 degrees Celsius, the excavator is usually in a high-temperature operation state. The hydraulic system is one of the core parts of the excavator. High temperature will reduce the viscosity of the hydraulic oil and affect the working efficiency and stability of the hydraulic system. At the same time, high temperature will accelerate the wear of hydraulic components and increase the risk of equipment failure.
For second-hand dealers, it is crucial to understand the high-temperature operation of the excavator. When acquiring a second-hand excavator, they need to carefully check the cooling system of the equipment. Check whether the radiator is blocked or damaged, whether the fan is operating normally, etc. At the same time, second-hand dealers can also find out whether the excavator has been operated for a long time in a high-temperature environment by asking the original owner about the use environment and operating temperature of the equipment. If a second-hand excavator has experienced high-temperature operation, it may cause potential damage to key components such as the engine and hydraulic system, which will directly affect the value of the equipment. When evaluating the price, second-hand dealers need to consider the maintenance costs and performance degradation that may be caused by high-temperature operation.
When selling second-hand excavators, second-hand dealers have the responsibility to introduce to customers how to avoid the impact of high-temperature operation on the excavator. Customers can be reminded to keep the excavator's cooling system clean when operating in a high-temperature environment, and regularly check the level and quality of the coolant and hydraulic oil. For example, clean the dust and debris on the radiator in time to ensure the smooth circulation of the coolant; check the quality of the hydraulic oil and replace it in time if necessary. In addition, long-term continuous operation should be avoided, and the equipment should be given a certain rest time to reduce the temperature. At the same time, second-hand dealers can also suggest customers to install additional cooling equipment, such as hydraulic oil radiator fans, etc., to improve the working performance and reliability of the excavator in high temperature environments.
In short, the high-temperature operating state of the excavator needs to be comprehensively judged from multiple aspects such as ambient temperature, engine water temperature, and hydraulic oil temperature. In the process of acquiring and selling second-hand excavators, second-hand dealers should pay full attention to the impact of high-temperature operation on the equipment, and provide customers with accurate information and reasonable suggestions to ensure that second-hand excavators can operate safely and efficiently in different operating environments.