Tech Team · Kintek Solution

When hydraulic oil overheats, several detrimental effects can occur:

1. Reduced Lubrication: Overheating can cause the oil to lose its lubricating properties, leading to increased friction and wear in the hydraulic system. This can result in damage to the moving parts, such as the column shaft and guide frame, which require good lubrication to operate smoothly.

2. Viscosity Changes: High temperatures can alter the viscosity of the oil, making it thinner. This can lead to a loss of system efficiency and control, as the oil may not provide the necessary resistance to flow required for proper operation of hydraulic components.

3. Increased Risk of Cavitation: Overheated oil can lead to cavitation, a phenomenon where the oil vaporizes in low-pressure areas, forming bubbles that can collapse and cause damage to metal surfaces.

4. Accelerated Chemical Breakdown: High temperatures accelerate the chemical breakdown of the oil, leading to the formation of sludge and other contaminants. This can clog filters and narrow passages in the hydraulic system, reducing performance and potentially leading to system failure.

5. Thermal Expansion: Overheating can cause components in the hydraulic system to expand, potentially leading to leaks or mechanical failures.

6. Reduced Cooling Efficiency: As mentioned in the reference, modifying the pressure above the tank can change the oil-cooling efficiency curve. Overheating can alter the oil's ability to cool effectively, which is crucial for maintaining the temperature of components like the hot plate.

To mitigate these issues, it is important to monitor and control the temperature of the hydraulic oil. This can be achieved through proper maintenance, such as ensuring adequate cooling water flow, using cooling devices on air inlet pipes, and regularly checking and replacing components like heat shields and electric heating elements. Additionally, maintaining clean oil and system components can help prevent overheating by ensuring efficient heat transfer and reducing the risk of blockages that impede cooling.

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