The vast majority of greases are used for lubrication and are called anti-friction greases. Anti-friction grease mainly plays a role in reducing mechanical friction and preventing mechanical wear. At the same time, it also plays a protective role to prevent metal corrosion and seals and prevents dust.
Most greases are used for lubrication. Anti-friction greases mainly play a role in reducing mechanical friction and preventing mechanical wear. At the same time, it also plays a protective role to prevent metal corrosion and seals and prevents dust. There are some greases mainly used to prevent rust or corrosion of metals, called protective greases. For example, industrial petroleum jelly, etc., have a few greases specially used for sealing, which are called sealing greases, such as thread grease. Lubricating greases are mostly semi-solid substances with unique fluidity.
The working principle of lubricating grease is that the thickening agent keeps the oil in the position where it needs to be lubricated. When there is a load, the thickening agent releases the oil to play a lubricating effect. At normal temperature and at rest, it is like a solid, it can maintain its shape without flowing, and it can adhere to metal without slipping off. When the temperature is high or the external force exceeds a certain limit, it can flow like a liquid. When the grease is subjected to the shearing action of the moving parts in the machine, it can generate flow and lubricate, reducing the friction and wear between the moving surfaces. When the shearing action stops, it can restore a certain consistency. The special fluidity of the grease determines that it can be lubricated in parts that are not suitable for lubricating oil. In addition, because it is a semi-solid substance, its sealing and protective effects are better than lubricating oil.
Although molybdenum disulfide grease and graphite grease are black grease from the appearance,we can not judge the grease product from the appearance alone, it is necessary to analyze the difference between the two from their physical properties. Both molybdenum disulfide and graphite are high temperature resistant solid additives, but they are different. 1.Molybdenum disulfide grease…
What is molybdenum disulfide ? Molybdenum disulfide is a solid surface lubricant, its main role is wear resistance, lubrication, corrosion. The temperature range is generally from-200 ° C to 400 ° C, which has high bearing capacity and is suitable for low speed and heavy load friction lubrication. What is the role of molybdenum disulfide…