The piston rod undergoes a series of changes under high temperature. Since the piston rod needs to withstand periodic changes such as gas pressure and inertial force, the instantaneous effect can cause the gas pressure to rise, which requires the piston rod to have sufficient rigidity and strength. However, high temperature can affect the material strength of the piston rod and cause it to decrease. At the same time, when the piston expands thermally, its volume increases, resulting in the destruction of the gap between the cylinder and the piston, thereby triggering various adverse reactions 6.

Analysis of the reasons for over-temperature

The reasons for the over-temperature of the piston rod may include the following aspects:

Ambient temperature: Excessively high temperature in the working environment may cause the temperature of the piston rod to exceed the designed allowable range.

Cooling system failure: If the cooling system (such as water cooling or air cooling) malfunctions and cannot effectively dissipate heat, it will cause the temperature of the piston rod to increase.

Insufficient lubricating oil: Lubricating oil not only plays a lubricating role but also helps to carry away heat. If the supply of lubricating oil is insufficient or the quality deteriorates, it will cause the temperature of the piston rod to rise.

Excessive load: Long-term or frequent operation under a load exceeding the design load will cause excessive heat generation in the piston rod.

Design defect: The design of the piston rod is unreasonable, such as poor heat dissipation structure, which may also lead to excessive temperature.

The changes of the piston rod under high temperature and the reasons for over-temperature involve multiple aspects and need to be considered comprehensively to ensure its normal operation.