Continuous casting roller tables for steel machinery operate under high temperatures, high loads, and complex conditions. Optimizing their lubrication systems is crucial for reducing component wear and extending service life. Traditional dry oil lubrication suffers from lubrication failure due to the base oil's tendency to carbonize at high temperatures, leading to clogged oil supply lines and accelerated bearing wear. Furthermore, the roller seal structure cannot completely prevent the intrusion of cooling water and scale, further accelerating component damage. Therefore, comprehensive optimization from multiple dimensions, including lubrication methods, lubricant selection, system design, and maintenance management, is necessary to improve lubrication efficiency and reduce wear risks.
Oil-air lubrication technology delivers fine lubricating oil to the friction pairs using compressed air, forming a dynamic oil film that effectively isolates the metal-to-metal contact surfaces. Its core advantage lies in the fact that the flow of compressed air carries away frictional heat, lowering local temperatures, while simultaneously creating a positive pressure environment that prevents cooling water and impurities from entering the bearing cavity. Compared to dry oil lubrication, oil-air lubrication produces a more uniform oil film, and the continuous flow of compressed air prevents the lubricating oil from oxidizing and coking at high temperatures, significantly extending component life. In addition, oil-air lubrication systems can precisely control the oil supply, reducing lubricating oil waste and lowering operating costs.
The selection of lubricants must balance high-temperature stability and extreme pressure resistance. Under high-temperature conditions, lubricating oils need a high viscosity index and excellent oxidation resistance to maintain oil film strength. Simultaneously, adding extreme pressure additives can improve the anti-wear performance of lubricating oils under heavy loads, reducing wear caused by direct metal-to-metal contact. Considering the environmental characteristics of continuous casting roller tables, lubricating oils also need good demulsification and rust prevention properties to prevent corrosion of components by moisture and impurities. By rationally matching lubricating oil performance with operating conditions, lubrication efficiency can be significantly improved, and component failure rates reduced.
The rationality of the lubrication system design directly affects lubrication efficiency. Traditional centralized lubrication systems are prone to pressure loss and joint leakage due to complex oil pipe layouts. Optimizing the oil pipe layout, fixing the oil pipes in locations less susceptible to heat below the rollers, and reducing unnecessary joints can reduce system pressure loss and ensure a stable lubricating oil supply. At the same time, adopting a modular design facilitates system maintenance and troubleshooting. Furthermore, adding pressure monitoring and alarm devices to key components allows for real-time monitoring of system operation status, timely detection and handling of anomalies, and prevention of component damage due to insufficient lubrication.
Improving the sealing structure is key to preventing impurities from entering. Traditional metal stacked ring seals are insufficient to completely block cooling water and oxide scale, leading to impurity accumulation within the bearing cavity and accelerated wear. Adopting a composite sealing structure, combining labyrinth seals and rubber seals, creates multiple protective barriers, effectively preventing impurities from entering. Simultaneously, optimizing the selection of sealing materials, using high-temperature resistant and wear-resistant seals, improves sealing reliability. Furthermore, regularly inspecting the sealing condition and promptly replacing damaged seals maintains sealing effectiveness and extends component lifespan.
Maintenance management is crucial for the long-term stable operation of the lubrication system. Establishing a regular inspection system to check the sealing and integrity of components such as oil pipes, joints, and distributors, and promptly addressing oil leaks and seepage. Establishing a lubricating oil change cycle and adjusting the oil change frequency according to operating conditions prevents lubricating oil aging and failure. At the same time, strengthening operator training and standardizing lubrication system operation procedures prevents system damage due to misoperation. Through scientific maintenance management, the lubrication system can be ensured to always be in optimal condition, providing reliable lubrication for the continuous casting roller table.
Optimizing the lubrication system of continuous casting roller table components in steel machinery requires a coordinated approach encompassing technological upgrades, design improvements, and maintenance management. By adopting oil-air lubrication technology, selecting high-performance lubricants, optimizing system design, improving sealing structures, and strengthening maintenance management, lubrication efficiency can be significantly improved, component wear reduced, and equipment lifespan extended, providing strong support for the efficient and stable operation of continuous casting production.
