Strengthen lubrication management to prevent equipment failures

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The occurrence of many safety accidents is often closely related to equipment malfunctions and failures; poor equipment lubrication is a major contributing factor to such malfunctions. Some companies suffer from outdated concepts of lubrication management and insufficient use of relevant technologies, which results in high equipment maintenance costs. Therefore, a thorough understanding of the importance of equipment lubrication is of great significance for preventing safety accidents and ensuring production safety. 1. Warning on Safety Accidents: On August 5, 2007, a chemical manufacturing company experienced a fire and explosion accident due to poor lubrication of the compressor equipment, severe wear of its components, and the leakage of flammable gases that came into contact with an ignition source. The accident resulted in 3 deaths and 6 injuries. As can be seen from accident cases, equipment lubrication problems not only affect the normal operation of the equipment but can also lead to serious safety accidents. II. The main functions of equipment lubrication: (1) Reducing friction and wear. Friction occurs as the various components of equipment move; a lubricating film can create a barrier between the contacting surfaces, reducing direct contact between metals and thereby lowering the coefficient of friction and minimizing wear. Without proper lubrication, friction can cause wear on the surfaces of components, reducing the accuracy and service life of the equipment. (II) Heat is generated when heat dissipation and cooling equipment is in operation, especially under high-speed operation and heavy load conditions. Good lubrication can carry away heat, serving to dissipate it and cool the components, thereby preventing them from deforming, annealing, or even being damaged due to overheating. (III) Preventing corrosion and rust: Moisture and harmful gases in the air can easily cause corrosion and rust on equipment components. Lubricant can form a protective film on the surface of components, preventing the external environment from eroding the metal surface and thus extending the service life of the equipment. (IV) Sealing and dust prevention: In some equipment, lubrication also serves to seal and prevent dust from entering. This helps keep external dust and impurities out of the equipment, ensuring its proper operation. III. Selection and Management of Lubricants (1) Selection of Appropriate Lubricants: Choose the appropriate type and grade of lubricant based on factors such as the equipment’s operating conditions, load, speed, and temperature. At the same time, it is necessary to consider performance parameters of the lubricating oil such as viscosity, flash point, and oxidation resistance, to ensure that it can meet the lubrication requirements of the equipment. The selection of lubricating oil generally follows these principles: 1. Speed of movement: Low-viscosity oils are suitable for high-speed equipment, while high-viscosity oils are required for low-speed, heavy-load equipment ； 2. Load characteristics: Lubricants with extreme pressure additives are required for shock loads ； 3. Temperature range: High-viscosity index oils should be used in high-temperature environments, while oils with low freezing points are required in low-temperature environments ； 4. Pollution control: For dusty environments, lubricants with strong anti-emulsification properties are preferred. (II) Adopting the correct lubrication method: Common lubrication methods include manual lubrication, drip lubrication, oil bath lubrication, splash lubrication, and pressure circulation lubrication. Different devices and components should use appropriate lubrication methods to ensure that the lubricant is evenly distributed to the lubricated areas. (III) Strengthen daily lubrication management by establishing a comprehensive lubrication management system, including lubrication records, oil quality testing, and equipment inspections. Regularly test and analyze the lubricating oil to detect any deterioration or contamination promptly, and replace the substandard lubricating oil. 1. Strictly implement the standardized process of “five fixations and three filtrations” (1) Five fixation principles: Fixed location: Identify the equipment’s lubrication points (such as bearings, gearboxes) ； Qualification: Select the lubricant brand according to the equipment manual ； Quantification: Establish standards for the amount of lubricant to be added (such as 80% of the lubricant tank capacity) ； Regular: Set the oil change interval (based on operating hours or oil analysis) ； Designated personnel: Define the responsibilities of operators, lubricators, and technicians. (2) Three filtration measures: Filtration is required at the stages of incoming delivery, distribution, and refueling to ensure the cleanliness of the oil. 2. Regular lubrication inspection: Periodically check the lubrication status of the equipment, including the level, color, odor, and viscosity of the lubricating oil, in order to identify any lubrication issues promptly and take measures to resolve them. 3. Proper storage management of lubricating oil: Lubricating oil should be stored in a dry, well-ventilated, and clean environment, away from direct sunlight and humidity. At the same time, it is necessary to properly classify and label oils to prevent their mixing and misuse. IV. Common Misconceptions About Equipment Lubrication (1) More lubricant is always better. Many people mistakenly believe that using an excessive amount of lubricant will improve the lubrication effect, but in reality this has the opposite effect. Excessive lubrication can lead to excessive agitation of the friction pair, increased oil temperature, and accelerated oil oxidation. At the same time, the equipment seals may be damaged prematurely due to excessive pressure, and lubricant leakage leads to waste and environmental pollution. Furthermore, excessive filling of grease hinders heat dissipation, creating a \"dead zone\" that exacerbates wear. (II) Lack of monitoring and failed lubrication: Many enterprises and operators do not pay enough attention to monitoring the lubrication condition; they rely on experience to change the oil, ignoring the status of the oil itself. Problems such as viscosity degradation, moisture contamination, and metal particle accumulation are not detected in a timely manner, preventing the early identification of signs of lubrication failure; this leads to the breakdown of the lubrication film, abnormal wear of the equipment, and even sudden failures. Enterprises need to establish an oil analysis system to enable \"oil replacement based on quality\" through techniques such as ferrography and spectral analysis, while using online sensors to monitor key parameters in real time. (III) Focusing only on addition rather than replacement: Some people believe that as long as there is enough lubricant, the equipment will be properly lubricated, and as a result they habitually only top up the lubricant without changing it. However, during use, lubricants gradually deteriorate due to factors such as oxidation, contamination, and the consumption of additives, resulting in a decline in their performance ； The oxidized gums and wear debris accumulated in old oil continue to circulate; simply adding new oil without changing the old oil not only fails to improve the performance of the lubricant, but also leads to a systematic deterioration in its properties, exacerbates equipment wear and acceleration of aging, and ultimately affects the overall performance and reliability of the equipment. Companies should set oil change thresholds based on factors such as operating time and level of pollution (e.g., water content >0.1% or viscosity change of ±15%). When changing the oil, the system must be thoroughly cleaned to prevent residual contaminants from affecting the performance of the new oil. (IV) Mixing lubricants of different brands and models: Using a mixture of lubricants with different formulations can lead to issues such as additive incompatibilities and poor compatibility between the base oils. Chemical reactions may also occur, resulting in a decrease in the strength of the lubrication film or the formation of harmful impurities such as precipitates and gums. These impurities can clog the lubrication system, hinder the normal circulation of the lubricant, and affect its lubricating efficiency. (V) Ignoring the quality of lubricating oil: Low-quality oils have certain issues in terms of the purity of the base oil, the formulation of additives, and their performance stability; their resistance to wear, oxidation, and emulsification is poor. An effective lubrication film cannot be formed, which leads to problems such as abnormal wear and high temperatures. Companies should implement preventive measures such as supplier qualification reviews, inspection upon delivery (e.g., infrared spectroscopy to verify component consistency), and regular random tests to ensure that the quality of lubricants is properly controlled. 5. Establishment of a equipment lubrication management system (I) Organizational structure and system development 1. Establish an organizational structure and define responsibilities Clearly define the organizational structure for lubrication management, set up a dedicated team for equipment lubrication management, and specify the responsibilities of each member to ensure that duties are assigned to specific individuals. For instance, lubrication engineers oversee the formulation of technical standards and optimization of strategies; dedicated lubrication technicians are responsible for performing targeted, measured lubrication operations and routine inspections; while oil testing technicians conduct analyses of the physical and chemical properties as well as the degree of contamination of lubricating oils. At the same time, the responsibilities of various departments are clearly defined: the equipment department is responsible for overseeing the implementation of lubrication plans, the procurement department ensures strict control over the quality of oils used, and the production department provides real-time feedback on the status of the equipment, thus creating a closed-loop management system. 2. Establish and improve the lubrication management system by formulating comprehensive regulations that cover procurement, storage, use, and replacement of lubricants; define lubrication standards, standardize the processes and procedures for adding and changing lubricants, and create equipment lubrication records to keep track of historical lubrication data. At the same time, a lubrication management assessment mechanism should be established to ensure the effective implementation of the system. (II) Lifecycle lubrication management strategy 1. Oil procurement and verification: During the equipment design phase, the lubrication requirements of the equipment should be fully considered, and appropriate lubrication methods and oil types should be selected to ensure that the lubrication system is compatible with the operating conditions of the equipment. At the same time, a fuel database based on equipment type and operating conditions is established, high-quality suppliers are selected, and the incoming fuels are tested for key parameters such as viscosity index and antioxidant properties, thereby creating a closed-loop management system of “demand forecasting → supplier evaluation → incoming product testing”. 2. Dynamic usage management: Develop dynamic lubrication plans, regularly inspect the lubrication system, and monitor aspects such as the quality, level, and cleanliness of the lubricating oil ； Regularly test the quality of lubricating oil and the lubrication condition of equipment, and replace deteriorated lubricating oil predictively based on the results of oil analysis. At the same time, regarding lubrication issues that arise during equipment operation, analyze the causes and optimize the lubrication plan. 3. For the regeneration and treatment of oil products, technologies such as centrifugal dehydration, molecular distillation, and additive supplementation are employed to enable the reuse of “waste oil”. Non-recyclable waste oil must be handed over to specialized organizations for environmentally sound disposal, so as to prevent environmental pollution. (III) Construction of an intelligent technology support platform
1. Data collection and monitoring
Install sensors and online monitoring equipment to collect real-time data on the viscosity, moisture content, particulate matter, pressure, etc., of lubricating oil, and transmit this data to the management platform. In-depth analysis of the collected data is carried out to establish a model for equipment lubrication failures; alerts are issued automatically when thresholds are exceeded, and the causes of the failures along with solutions are provided, enabling 24/7 monitoring of the equipment’s lubrication status. 2. Intelligent lubrication and digital management use the Internet of Things to monitor parameters such as oil level and temperature in real time, automatically triggering maintenance work orders in case of abnormalities. At the same time, an electronic ledger is established to record the oil change intervals and usage amounts, with intelligent alerts provided; historical data is analyzed to dynamically optimize lubrication strategies. 6. Cutting-edge Lubrication Technologies and Development Trends 1. Intelligent Lubrication Systems Intelligent lubrication technologies enable a shift from \"passive maintenance\" to \"proactive prediction\" through the deep integration of the Internet of Things (IoT), sensors, and artificial intelligence (AI). Sensors monitor the operating parameters of the equipment in real time, such as temperature, vibration, and speed, and transmit the data to the control center. Through big data analysis, the system can accurately calculate the lubricant requirements, and supply oil to the critical parts of the equipment in the right quantities and at the right times. By avoiding excessive or insufficient lubrication, it is possible to significantly improve the reliability and operational efficiency of equipment while reducing maintenance costs. Equipment lubrication management is moving in the direction of intelligence and automation. 2. Green and environmentally friendly lubricants: As environmental regulations become increasingly stringent, it is inevitable to develop more efficient and eco-friendly lubricating materials. New types of lubricants such as liquid ethylene polymers (ETO) exhibit improved viscosity-temperature properties, lower evaporation losses, and better viscosity at low temperatures. At the same time, the development of low-energy-consuming, long-lasting lubrication components, as well as circulating lubrication systems that utilize recycled oil, has also become an important trend in the industry. 3. Application of high-performance lubrication technologies High-performance lubrication technologies involve innovations in solid and liquid lubricant materials, such as biomimetic hydrophilic lubrication, biomimetic lubrication for reducing drag, and nano-lubrication technologies. Nanolubrication technology involves adding nanoparticles such as nano-copper and molybdenum disulfide nanosheets to lubricants, thereby creating a very thin yet highly strong protective layer on the friction surfaces. This layer fills in the microscopic irregularities, reduces surface roughness, effectively lowers the coefficient of friction, and enhances load-bearing capacity. In summary, equipment lubrication is an important aspect for ensuring the proper operation of equipment and preventing safety accidents. By properly selecting lubricants, determining the lubrication schedule and methods appropriately, and strengthening lubrication management, it is possible to effectively reduce friction and wear in equipment, lower the failure rate of such equipment, extend its service life, and prevent safety accidents. Therefore, enterprises should attach great importance to equipment lubrication, incorporate it into their safety production management systems, and continuously improve the level of equipment lubrication to provide strong support for the safe production and sustainable development of the enterprise.