2023-11-30
Reasons For The Discoloration And Blackening Of Hydraulic Cylinders And How To Deal With Them
Here are some common causes and possible solutions:
High temperature conditions: When hydraulic cylinders are exposed to high temperatures, they can discolor if they come into frequent contact with lower temperature surfaces. To address this issue, it is important to ensure proper heat dissipation in the hydraulic system and minimize temperature differentials.
Use of different hydraulic oil: If hydraulic oil from a different brand or with different additives is used during maintenance, it can result in discoloration of the hydraulic cylinder. This is because the additives in the oil may have different qualities and characteristics. To prevent this, it is recommended to use hydraulic oil that meets the manufacturer's specifications and avoid mixing different brands or types of oil.
Adherence of additives: Discoloration can occur due to additives in oil seals or hydraulic oil adhering to the hydraulic cylinder rod at high temperatures. Blue discoloration may be caused by additives in oil seals and hydraulic oil, while black discoloration can result from lead additives in spray paint on wear-resistant sleeves adhering to the cylinder rod.
Solutions for hydraulic cylinder discoloration:
Minor discoloration: If the discoloration is minimal, it may disappear on its own over time. In such cases, it is generally not a cause for concern, and the hydraulic cylinder can continue to be used.
Severe discoloration: If the discoloration is significant, it is advisable to replace the oil seals and wear-resistant sleeves affected by the discoloration. Additionally, taking steps to prevent high temperatures in the hydraulic oil can help in the recovery process.
Remember to consult the manufacturer's guidelines and seek professional assistance when addressing hydraulic cylinder discoloration to ensure proper maintenance and optimal performance of the hydraulic system.
