Dandong Dongba Lubricating Material Co., Ltd.
Post code: 118007
Email: [email protected]
Address: 108 Building Industrial Park, Zhen'an District, Dandong City, Liaoning Province
The effect of grease on grease
The role of grease is mainly to lubricate, protect and seal.
Most greases are used for lubrication and are called antifriction greases. Anti-friction grease is mainly used to reduce mechanical friction and prevent mechanical wear. At the same time, it also plays a protective role against metal corrosion and a seal against dust. Some greases are mainly used to prevent metal from rusting or corroding. They are called protective greases. For example, industrial petroleum jelly has a small number of greases for sealing purposes, called sealing greases, such as thread grease. Most greases are semi-solid materials with unique fluidity.
The working principle of the grease is that the thickener keeps the oil in the position where it needs to be lubricated. When there is a load, the thickener releases the oil, thus playing a lubrication role.
Composition of grease
Grease consists of base oil + thickener + additives. The main component is base oil (mineral oil or synthetic oil). The thickener acts like a sponge and consists of a fibrous structure. The base oil and additives are stored in it. Just as a sponge is squeezed and flows out of water, a grease “sponge” is squeezed and a base oil is also precipitated. There are two main ways of grease being “squeezed”: mechanical squeeze and high temperature.
Why grease is divided
From the above we can see that the grease separation is normal. If the grease does not have the ability to release the oil, it will not be lubricated, because the lubrication depends on the base oil, and the thickener has almost no lubricating effect.
The oil content of the grease is related to the content of the thickener. From the composition of the grease, we can see that the content of the thickener in the grease is different. Think of the sponge, and it is not difficult to understand the content of the thickener. If it is high, the base oil is less likely to separate out and the oil separation is less.
So is the thickener in the grease the better? Of course not, obviously, if there are too many thickeners, the base oil will be sucked tightly. How to lubricate grease that cannot release base oil? Therefore, the thickening process of grease needs to find this compromise.