In quenching oil, sludge decomposition products generated by thermal shock are the main source of pollution. The size of these pollutant particles is very small, usually ranging from a few tenths of a micron to several microns. However, when the pollutant content exceeds a certain amount, it can cause a decline in the performance and surface finish of the quenching oil, leading to reduced or unstable quality of heat-treated products. Moreover, pollutants increase the drag-out loss of quenching oil. To solve the above problems, we recommend a purification mode for quenching oil, which is an improvement over traditional purification modes. As can be seen from the schematic diagram, general filtration uses filter element cascade filtration, which cannot purify particulate matter in the oil. Moreover, the filter elements need to be replaced regularly, increasing costs, and maintenance is troublesome, with high maintenance costs and long cycles. The FM600 quenching oil online purification system mainly consists of three major parts: centrifugal filter, oil delivery system, and control system (British imported centrifugal main unit). The key component in the centrifugal filter (Figure 5) is the dual-jet central rotor, which converts the pressure generated by the oil into driving force for the rotor, driving it to rotate at high speed, reaching speeds above 6000 rpm, and generating centrifugal force more than 2000 times that of gravity. The centrifugal filter relies on centrifugal force to separate impurities. Because the specific gravity of oil and pollutants is different, the centrifugal force they experience is also different. When the particle size is certain, the greater the density of the particle, the greater the centrifugal force it receives. Therefore, the centrifuge can quickly and effectively separate metal wear particles and pollutants that cause component wear or oil deterioration. The FM600 quenching oil online purification system is independently installed on the oil tank or on a separate mounting bracket, using an online bypass continuous purification method to separate particulate matter in the quenching oil in real time, without affecting the normal operation of the quenching furnace equipment and heat treatment production. Since the centrifugal purification oil system removes pollutants from the oil through centrifugal force, it is a purely physical process that does not alter the composition characteristics of the quenching oil or reduce its performance indicators. Compared with other purification equipment, the centrifugal oil purification system also has the following advantages: 4: Simple structure, unique hydraulic pressure driving principle, no wearing parts design, high operational reliability, and very low failure rate. l Applicable oil types: cutting oil, hydraulic oil, lubricating oil, engine oil, heat transfer oil, quenching oil, forging oil, wire drawing oil, rust preventive oil, gear oil, hydraulic transmission oil, cylinder oil, rolling oil, circulating oil, locomotive-specific oil, turbine oil, cooling oil, heavy oil, compressor oil, cleaning oil, heat conduction oil, EDM oil, etc. l Typical applications: metallurgy, mining, coal, petrochemical, electric power, marine, engineering machinery, automobile manufacturing, railway, locomotive, machining, aircraft manufacturing, papermaking, cement, building materials, food, plastic rubber, military, and other industries. Before using the centrifugal oil purification system, each quenching furnace used 60 barrels of oil, with an average price of 5000 yuan per barrel. Under normal consumption, the annual replenishment of quenching oil accounts for about 5% (2-3 barrels) of the total usage. Traditional filters are replaced every 6 months, with a replacement cost of about 1000 yuan each time. The heat exchanger is replaced every 5 years, with a replacement cost of about 50000 yuan each time. The quenching tank needs to be shut down for cleaning every 2 years, with cleaning costs including labor and management fees of about 10000 yuan, and 4% (2 barrels) of quenching oil is lost during cleaning. After using the centrifugal oil purification system, the service life of each heat exchanger can reach 16 years, there is no need for special cleaning of the quenching tank, and the filter replacement cycle is extended by at least 4 times. Calculating based on an average of 2 heat treatment equipment per unit: 2 x 19000 = 38000 yuan. This does not yet include the indirect economic benefits brought to the enterprise by the stable performance of the purified quenching oil in improving workpiece quality and reducing quenching furnace equipment failures, which far exceed the above cost savings. 1.3 Application equipment: 4 Aichelin multi-purpose furnaces, 3 Aichelin rotary furnaces, 1 French ECM pusher furnace. 1.3 Application equipment: 2 Japanese pusher furnaces, 2 Aichelin pusher furnaces, 2 multi-purpose furnaces. The FM600 quenching oil online purification system is one of the most advanced quenching oil online purification equipment both domestically and internationally. This system has been applied in multiple enterprises at home and abroad, achieving good application results and receiving high recognition from customers. 1.3 Application equipment: 3 Aichelin multi-purpose furnaces, 4 continuous furnaces, 3 rotary furnaces. Oil replacement cycle: 2-4 years. To reduce usage costs, users have not changed the oil, only when the oil quality is poor (about 1 year), they replace one-third after sedimentation. Figure 18: Heat treatment site at Getrag (Jiangxi) Transmission System Company Nanchang Factory, showing the actual scene after installing centrifugal oil purification systems on 5 multi-purpose furnaces. 1.7 The use of centrifugal oil purifiers greatly reduces the comprehensive maintenance cost of equipment for customers and improves comprehensive economic benefits. Due to the continuous use of oil for many years, the increase of contaminants in the oil and the decline in oil cooling quality lead to a decrease in workpiece surface hardness, and even unqualified products become scrap. In addition, the workpiece surface brightness is poor, and the appearance is unattractive. After cleaning, there is still a large amount of carbon black and other contaminants on the workpiece surface. Practice has proven that after installing the oil purification system, the oil quality has significantly improved, and the appearance of workpieces has changed greatly. Soft spots in the hardened layer have disappeared. Up to now, there is basically no need to change the oil, only to replenish normal oil consumption. In addition, the manual management cost of cleaning the oil tank scale is greatly reduced, the surface quality of workpieces is improved, and the long-term comprehensive economic benefits are very considerable. 1.3 Application equipment: 8 Aichelin pusher furnaces, 2 rotary furnaces, with a total of 16 centrifugal purification systems installed. The installation of the online oil purification system eliminates the need for regular furnace shutdowns to clean the thick sludge and debris in the quenching tank, saving a lot of costs, and more importantly, improving product quality and increasing comprehensive benefits. The online centrifugal oil purification system is suitable for gear processing, shaft processing, chain production, casting annealing, tool manufacturing, automotive, petroleum applicable fields, machining, gear and bearing processing, powder metallurgy industry filtration, fastener manufacturing, and the fully automatic slag removal centrifuge is suitable for food manufacturing, glasses and glass industry, powder metallurgy, semiconductor industry, wastewater treatment, chemical industry, petrochemical field, concrete processing and manufacturing, mining development, drawn tube processing, and other large-scale factory purification fields. Beijing Tianhang Zhiyuan Technology Co., Ltd. aims to promote and apply advanced technologies from around the world to China's industrial modernization, providing related supporting equipment and technical support for China's aerospace, aviation, railway, transportation, petrochemical, nuclear industry, automotive, and other fields. Currently, the business mainly involves two major sectors: online oil purification technology and industrial non-destructive testing technology. The online centrifugal oil purification system adopts British proprietary technology. Compared with other equipment, it has unique advantages over general similar filtration technologies: low equipment power, simple structure, and convenient installation, disassembly, and cleaning. There is no need to replace filter elements, minimizing oil loss, and effectively ensuring the quality and characteristics of the oil, greatly improving and enhancing workpiece quality and equipment life. It directly and indirectly reduces production costs and increases comprehensive economic benefits. Industrial CT non-destructive testing technology is a relatively high-precision and advanced technology, originating from foreign computed tomography analysis technology. This technology is currently widely used in China's aerospace, aviation, military, nuclear industry, and other fields, and is gradually expanding to civil fields such as automotive, petroleum, railway, and transportation, providing effective technical solutions and related equipment for the independent research and development and process improvement of China's core equipment.