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What is the difference between low-priced hydraulic oil and genuine hydraulic oil?

2018-06-29 by Jun Tai


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1. The base oil is different
Base oils can be classified into standard oils and non-standard oils, and recovered oils (acid washing oils) according to production standards.
Standard oil (base oil produced according to relevant standards) generally refers to the paraffin-based neutral oil standard, intermediate and naphthenic oil base oil standards (SN, ZN, DN standards) promulgated by Sinopec.
The term "non-standard" refers to oils that are generally lower than the standards of the head office, as opposed to the three types of base oils promulgated by Sinopec. Non-standard base oils are cheap and become "good raw materials&quot For the manufacture of low-priced hydraulic oils. Non-standard base oils originally contain certain oil sludge, yellow robes, and metal impurities. The low-priced hydraulic oil produced by non-standard oil is turbid (some are light yellow). The non-standard base oil is treated with sulfuric acid to remove heavy aromatic hydrocarbons, and the "base oil" made by neutralizing excess acid with a base, so that the color is light and transparent. It is sometimes difficult to distinguish only from The appearance of the oil, but according to the standard requirements of the base oil, many indicators are unqualified.

How to distinguish the type of base oil?
Look at the color. The color is clear and transparent as a second type of base oil. A light yellow color is a type of base oil. If the color of the base oil is green or dark yellow, it is a non-standard oil or a recovered oil (acid wash oil). Generally, the national standard base oil is not odorless. If there is no doubt about irritating smell or pungent smell, it is non-standard oil or recovered oil (acid wash oil). The hydraulic oil using non-standard oil or recovered oil (acid washing oil) contains oil sludge and yellow robes, and has poor oxidation resistance. After working in the equipment after high temperature and high pressure, it will soon become black and deteriorate. When the sludge and yellow robes accumulate to a certain extent, they will block the hydraulic lines and block the filter device, so the pressure will not come up, and may even cause the tube to burst.

2. Difference in defoaming performance
Hydraulic oil is in operation, generating bubbles, such as poor defoaming performance, during the working process, the bubble bursts to form a vacuum bubble hole, which is hydraulic The friction of the metal surface of the piece is intensified, causing the temperature of the device to rise and the noise to increase.

3. Different production processes and quality assurance
There are many low-priced inferior hydraulic oils on the market, most of which are small workshop products, which are unscrupulous merchants who have been abandoned by simple processes. Extracted from oil or waste hydraulic oil. Low-priced inferior hydraulic oil will use impure base oil or diesel-dissolved rubber to impersonate any hydraulic oil, use ordinary hydraulic oil to impersonate anti-wear hydraulic oil, and even use some recycled oil after simple treatment, pretending to be a brand of oil... Dachang insists on originality The seven-level quality control system is strictly in accordance with the ISO9001:2008 quality management system. The ERP system is used to strictly control every link that may cause quality impact. Each barrel of oil has anti-counterfeiting treatment, and every drop of oil gives you peace of mind!

4. Different viscosity coefficient
Viscosity is an important indicator of hydraulic oil. The source of low-priced inferior hydraulic oil is disorderly. Most of the viscosity index is very low, and the viscosity-temperature performance is poor. It becomes very fine at high temperatures and becomes very thick at low temperatures. When the viscosity is too low, it is easy to cause leakage (internal leakage and leakage) of the hydraulic system, and the hydraulic system cannot work normally. When the viscosity is too high, the force transmission efficiency is lowered, the hydraulic oil flow speed is lowered, and the oil pump discharge amount is reduced. Anmei anti-wear hydraulic oil hydraulic oil 46/68 viscosity index is above 100, higher than other domestic brands of conventional hydraulic oil, with excellent viscosity-temperature characteristics, less viscosity at high temperatures, maintaining stable viscosity and oil pressure.

5. Different anti-emulsification performance
Excellent water separation capacity, reducing the chance of emulsification and whitening of oil, reducing the loss of oil performance caused by emulsification of oil, effective Prevents hydraulic system pressure anomalies and component wear caused by oil emulsification. The low-quality inferior hydraulic oil has a high moisture content. The long-term operation of the hydraulic oil containing more water will accelerate the aging of the oil, causing rust or corrosion of the metal. The oil will emulsifie after the water, and the lubricity will be significantly reduced and accelerated. The hydraulic system is aging. Anmei Hydraulic Oil is formulated with deeply refined base oils and special effects additives. It has the characteristics of quick separation of moisture and excellent anti-emulsification properties. It is suitable for lubrication of wet conditions or hydraulic systems that may enter the water.

6. What is the difference in cleanliness?
Low-priced inferior hydraulic oils produce more carbon deposits and consume more fuel. Anmei hydraulic oil can effectively keep the hydraulic system highly clean. It will not oxidize or blacken in the high temperature environment for a long time. It will not form sludge after several years of use, and will not cause oil pump wear or control valve failure. The service life is normal. More than 2 times the hydraulic oil, saving oil replacement costs. Anmei anti-wear hydraulic oil hydraulic oil 46/68 anti-oxidation performance is the most mineral oil, ultra-high cleanliness, using aviation technology - electro-adsorption separation filtration technology to filter all particles above 5 microns in diameter, to achieve the American aviation standard NAS Grade -9, the same level as aviation hydraulic oil, effectively prevents the hydraulic control valve, servo valve blockage and wear caused by fine particles in the fuel tank and oil.

7. Differences in anti-wear properties
In order to reduce costs, low-cost hydraulic oils lack the necessary chemical additives and even lack of anti-wear agents. Low-cost hydraulic oil using non-standard base oil is acid refining, the acidity of the product is large, the general acid value is 2.0mgKOH/g (the qualified base oil is less than 0.05mgKOH/g), and this high acid value lubricating oil is in use. It will greatly corrode various metals in the machine, especially non-ferrous metals, which will accelerate the wear of the machine, increase the gap, reduce the efficiency, and increase the fuel consumption until the life is shortened. Anmei Hydraulic Oil has a special anti-wear additive formula to effectively control the wear and tear of the machine and extend the service life of the equipment. Anmei anti-wear hydraulic oil hydraulic oil 46/68 super anti-wear performance anti-wear performance surpasses the same type of products, achieving the same anti-wear performance as heavy-duty gear oil, meeting the highest specification FZG-12 standard, while other brands are generally in FZG Within -9 levels.

8. Different effects on human health
The first-generation and second-generation hydraulic oils that are commercially available are based on paraffin-based deodorization treatment. In a poorly ventilated or semi-sealed workshop, harmful gases that are volatilized in the air due to high temperature and high pressure are drawn into the workers and affect the health of workers. Anmei HM series oil products adopt environmentally friendly base oil, no zinc formula, no harmful substances, obtained the certification of international authoritative testing institutions, and passed the strict RoHS certification of the EU to effectively protect workers' health.

      

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