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This post was last edited by liuquan1100 on 2017-11-1 17:06. Industrial lubricants encompass a very wide range of types as well as various fields of application. Its main types include: steam turbine oil, bearing lubricant, hydraulic oil, gear oil, machine tool lubricant, grease, metalworking fluid, lubricant for the textile industry, quenching oil, heat transfer oil, electrical equipment oil, refrigeration machine oil, rust preventive oil, etc. These are used in large quantities across various industries and are widely recognized products. http://s8.sinaimg.cn/mw690/00639tN8zy7fsFcgYsf67&690 Lubricant products used in most cases can be roughly divided into two categories: lubricants for industrial machinery and oils used in industrial manufacturing processes. The selection of lubricating oil is the first step in its use, and it is key to ensuring proper lubrication of the equipment as well as to enabling the lubricant to perform optimally. (1) Selection of lubricating oil 1. When selecting a lubricating oil, the following three factors should be taken into consideration: (1) The operating conditions under which the mechanical equipment is actually used; (2) The specifications or recommendations provided in the manufacturer’s instructions for the mechanical equipment; (3) The regulations or recommendations given by the lubricating oil manufacturer. 2. Selection of lubricant performance indicators (1) Viscosity Viscosity is the indicator used for classifying and grading various lubricants, and it is decisive for quality assessment and determination. The viscosity of the lubricating oil for equipment is determined by referring to relevant charts based on design or calculation data. ⑵Pour point: The pour point is an indicator that indirectly reflects the low-temperature flow properties of lubricants during storage, transportation, and use. Experience has shown that the operating temperature of ordinary lubricants must be 5–10°C higher than their pour point. ⑶Flash point: The flash point is primarily an indicator of the safety of storing, transporting, and using lubricants; it also serves as a criterion for controlling the distillation fractions and volatility of lubricants during production. The principle governing the flash point specification for lubricants is to apply a 1/2 safety factor in accordance with safety regulations, meaning it should be 1/2 higher than the actual operating temperature. Since the oil temperature in the crankcase of internal combustion engine oils should not exceed 120 °C, the flash point of such oils is specified to be at least 180 °C. ⑷Selection of performance indicators There are numerous performance indicators, and the differences between different varieties can be significant; a reasonable decision should be made by taking into account the operating conditions of the equipment, the requirements of the manufacturer, as well as the specifications and descriptions related to the oil. Strive to meet the requirements of lubrication technology while remaining cost-effective. http://s6.sinaimg.cn/mw690/00639tN8zy7fsG7hQDXa5&690 (II) Substitutes for lubricants 1. Different types of lubricants have their own specific characteristics or differences in terms of performance. Therefore, it is necessary to select lubricants correctly and appropriately, avoid using substitutes, and under no circumstances permit random substitution. 2. Principles for substituting lubricants ⑴ Try to use oils of the same type or those with similar properties as substitutes. ⑵The viscosity must be comparable; the viscosity of the substitute oil should not exceed ±15% of that of the original oil. It is preferable to use oils with a slightly higher viscosity as substitutes. ⑶Quality is prioritized over low standards. ⑷When choosing a substitute oil, attention should also be paid to the equipment’s operating environment and temperature. (III) Mixing of lubricants 1. It is advisable to avoid mixing lubricants of different types, grades, from different manufacturers, as well as old and new lubricants. The following oils must never be mixed together. ⑴Military specialty oils and specialized fuels must not be mixed with other types of oils. ⑵Oils with anti-emulsification requirements must not be mixed with oils that do not have such requirements. ⑶Anti-ammonia turbine oil must not be mixed with other turbine oils. ⑷Zn-containing anti-wear hydraulic oil cannot be mixed with silver-resistant hydraulic oil. ⑸Gear oil should not be mixed with worm gear oil. 2. The following situations allow for mixing: ⑴ Products of the same manufacturer with similar quality and basic equivalence. ⑵Products of the same type but different grades from the same manufacturer. ⑶For different types of oils, as long as it is known that neither component in the mixture contains additives. ⑷When oils of different types are mixed together, no abnormal phenomena or significant changes in performance occur. 3. There are a large variety and quantity of additives used in internal combustion engine oils, and their properties vary; careful consideration must be given to the issue of mixing oils with unknown properties. To avoid adverse consequences or even equipment lubrication failures. Lande Lubricant Technology Co., Ltd. is dedicated to providing domestic enterprises with professional lubricant monitoring, purification products, and services. These include instruments for analyzing the physicochemical properties of lubricants, contamination level testers (particle counters), ferrography analysis systems, wear particle analysis systems, elemental spectrometers, infrared spectrometers, portable on-site testing devices, facilities for setting up lubricant monitoring laboratories, expert systems for lubricant monitoring, as well as online monitoring systems for lubricants in industrial equipment. All these offerings help enterprises solve technical challenges related to equipment lubrication at the best possible cost-performance ratio.