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Know More About Petroleum Products And Their Usage
Petroleum products are a general term for various commodities directly produced from petroleum or a portion of petroleum as raw materials, generally excluding petrochemical products synthesized from petroleum as raw materials. It is mainly divided into six categories: fuel, lubricant, petroleum ...Read more -
Usage of lubricating oil
1. Oil bath lubrication: Oil bath lubrication is the most common lubrication method suitable for lubrication of low and medium speed bearings. A part of the bearing is immersed in an oil groove, and the lubricating oil is carried by the rotating bearing parts and then flows back into the oil groo...Read more -
Advantages of lubricating grease
1. No need for resetting and oil supply system, which can reduce maintenance costs. 2. The adhesion of grease makes it maintain strong force on the friction surface, making it highly resistant to water, sealing, and leakage. It can be used on poorly sealed or even open friction components. 3. Lub...Read more -
Important Characteristics of Grease
The structure of grease determines that it has different characteristics from liquid lubricating oil, including rheological properties (non-Newtonian edge contact) Mainly manifested in: 1. When not subjected to external forces, it maintains a certain shape and does not automatically lose its shap...Read more -
How Does Semi-Finished Oil Become Finished Oil?
By refining, blending, and adding different additives as needed, semi-finished oil products can be fully qualified and commercially viable. The refining is the process of removing certain non-ideal components and impurities from semi-finished oil, so that the oil meets the requirements of product...Read more -
Why Engine Oil Turns Black?
Firstly, the blackening of lubricating oil is related to the fuel used. The higher the olefin and sulfur content in the fuel, the easier it is to form sludge. Secondly, when changing the lubricating oil, do not clean the inside of the engine and the oil pan. The sludge in the previously used lubr...Read more -
Misunderstandings in Automobile Maintenance and Repair
Misconception 1： Worries about high engine cooling water temperature and not afraid of low temperature. Make every effort to find the cause of high engine cooling water temperature. If the water temperature is low, it is considered normal. In fact, low engine cooling water temperature in modern ...Read more -
Simple Identification of Hydraulic Oil
1. Moisture content Combustion method. Dip a small amount of the oil to be tested with clean and dry cotton yarn or paper, and then ignite it with fire. If there is a cracking sound or flashing phenomenon, it indicates that the oil contains a lot of water. 2. Impurity content Filter paper detecti...Read more -
Viscosity and Strength Limits of Grease
The viscosity and strength limits reflect the characteristics of non-Newtonian fluids in lubricating grease, that is, the fluidity changes with shear velocity. The viscosity of grease is usually represented by apparent viscosity or similar viscosity. When explaining the viscosity, temperature and...Read more -
What Is the Relationship between Oil Viscosity and High Temperature?
Oil viscosity is the most important performance indicator for measuring the fluidity of oil in various states. The lower the viscosity of the engine oil (with a “thinner” feel), the thinner the oil film and better fluidity. However, the ability to resist shear is weaker under high te...Read more -
The Effect of Lubricating Oil Cleanliness and Dispersion
During the use of lubricating oil, some carbon particles and smoke generated by fuel combustion will enter it, as well as some dust from the air. In addition, some acidic substances generated by the high-temperature oxidation of the lubricating oil itself will generate carbon deposits and sludge ...Read more -
Key Points to Select Lubricating Grease
The first step in selecting lubricating grease is to clarify its purpose. According to the main functions, it can be roughly divided into three categories: friction reduction, protection, and sealing. Selection of lubricating grease depends on which one is the main role it plays in the use area. ...Read more
