Hydraulic oil is the working medium of the hydraulic system. If the hydraulic oil is clean, it not only affects the working performance of the hydraulic system and the service life of the hydraulic components, but also directly relates to whether the agricultural machinery can work normally. At least 75% of the failures in the hydraulic system are due to the unclean hydraulic oil. Therefore, it is very important to prevent the contamination of hydraulic oil. Contaminated oil impurities can be classified as insoluble and soluble impurities. Insoluble impurities mainly refer to mechanical impurities, including dirt particles and internal impurities generated from the outside of the system. Dirty particles entering from the outside of the system include residual oxides, sand grains, and chips, cotton yarns, rubber, etc. that are mixed during processing, assembly, and inspection of parts. Most of these impurities are in suspension and are insoluble impurities. The infiltration of moisture, air, or the mixing of cooling fluid is also a kind of pollution to the oil, and it is also external to enter the dirt. The contamination of the oil particles with the dirt particles will aggravate the wear of the relative moving parts, or cause scratches, pulls, seizures, plugging of pipe holes, or throttling gaps due to friction, and will destroy the chemical stability of the oil and accelerate the oxides. The generation of impurities and the separation of organic impurities in the oil. The particles generated during the wear of the hydraulic components and the oxides resulting from the deterioration of the oil are impurities generated inside the system. Among these impurities, metal particles are insoluble impurities. Oxides dissolved in oil are soluble impurities. Both soluble and insoluble impurities also have a detrimental effect on the service life of hydraulic components. If mechanical particles accelerate wear due to direct abrasive action, soluble impurities increase wear due to reduced oil lubricating properties, and cause corrosion wear and blockage of the orifice gap, or vice versa. The oil contains solid dirt, metal particles account for about 75%, dust accounts for about 15%, and other impurities such as oxides, fibers, and tree gum account for about 10%. How to prevent the contamination of hydraulic oil and purify the polluted oil has become an important issue. The main method to prevent oil contamination: Regardless of maintenance or replacement of hydraulic components, new parts, in addition to the pipeline must be cleaned before installation, the castings must be thoroughly cleaned, including the use of mechanical cleaning and chemical cleaning such as sandblasting. Wash in trichloroethylene, then blow dry with compressed air. When the hydraulic system completes the final assembly, it is also required to perform an empty-cycle flushing, in which case the other components of the system are disconnected as much as possible to prevent contamination by contaminants removed by the pipeline. The hydraulic components must be washed with kerosene before assembly, and it is forbidden to wipe them with fabrics with fibers (such as cotton yarn). The fuel tank should be reasonably sealed and an air filter should be installed in the atmosphere. All seals must be reliable and non-oil resistant seals and hoses must not be used. Reasonable use of the type of oil filter, should be considered from the oil filter efficiency, the ability to block dirt, allow working pressure, eliminate the convenience of pollution and many other aspects. Oils are regularly changed. In the summer, the hydraulic system should be No. 32 and No. 46, and in the winter, No. 68 oil. When adding new hydraulic oil, it must be filtered beforehand to be purified. When filtering, only insoluble suspended impurities can be removed, and soluble impurities cannot be filtered out. Only the regular oil change can be used to limit the content. In addition, even if the oil is sealed and filtered well, it will gradually deteriorate and lose its proper performance under the repeated action of long-term pressure and temperature, and it also needs regular replacement.
Categories include:
Corporate Restructuring
Automobile Spare Parts,Auto Cleaning,Car Cleaning NINGXIA IFA INDUSTRY&TRADE CO.LTD , https://www.ifagoup.com
The world's major automobile companies have to reform the supply system, the implementation of global production, global procurement, that is, from a number of auto parts manufacturers to a few system suppliers to purchase; from a single auto parts procurement module procurement; by the implementation of domestic procurement Transform into global sourcing. Vehicle manufacturers procurement system changes, requiring auto parts manufacturers continue to be compatible with it, not only requires auto parts manufacturers to expand their own strength, improve product development capabilities, to system development, system supply, but also requires its development to shorten Cycle, provide high quality and cheap products. This change has promoted the process of mergers and acquisitions and restructuring of the auto parts industry in the world.
Chain development
Market concentration is relatively higher than in previous years. OEMs are becoming more and more modularized and systematized. As a result, collaboration among suppliers becomes more and more close, which makes the global auto parts supplier system gradually evolve from the pagoda structure to A manufacturer responsible for the entire supply chain management, making the supply chain more standardized cooperation. Enterprises like this are top-notch in their respective markets, occupying 80% of the market and dominate the high-end market. A company executives said: "With the rapid growth of vehicle production and sales, parts companies have encountered a golden opportunity to catch this fast lane will be behind, it will be eliminated."
skill improved
Major auto parts manufacturers have applied aerospace, aviation and electronics technologies to auto parts and assemblies. Safety technology, electronic technology, energy-saving technology and environmental protection technology have been widely used in automobiles. Especially the new technology represented by electronic information technology is not only widely used in automotive products, but also extends to all aspects of development and design, trial production, production and management; it is not only applied to a single automobile component but also applied to System assembly.
Components companies set up R & D center, can be "fast" to meet the urgent needs of the market, rapid development of products; can "quasi", close to the market, to achieve "localization"; can "new" and more new technologies applied to the production Among them, that is, to ensure quality and reduce costs. In fact, some new technologies are parts companies running in leading OEMs.
Globalization
In order to reduce costs and occupy the market, many auto parts multinational corporations have to international development. European auto parts manufacturers have to invest overseas for international production; North American auto parts manufacturers have invested in Europe, but also want to expand the market in Eastern Europe; Japanese auto companies also continue to establish their own branches in the world. The emerging Asian market is the focus of competition among multinational corporations in major automobile parts and components. China is even more the place to contend for it.