Understand the importance of chemical properties to apply smooth fat

Mainly includes the oxidation stability, free acid and alkali, corrosion resistance, etc. 1, oxidation stability, smooth fat resist oxidation in the process of storage and use of talents. Oxidation stability is one of the important performance affect smooth fat using life, special smooth grease on the use of the high temperature for a long time. 2, free acid and alkali, free acid and alkali is smooth and fat in the process of consumption without abundant organic acid after saponification and excess alkaline. The mass fraction of free alkali content with KOH. Free organic acid and alkali on the use of the meaning of: 1) Very small amounts of fat free base on smooth quality, allowing that must contain a small amount of free alkali. Smooth fat in long-term storage, due to oxidation, after some hydrocarbons metamorphosis, become the organic acids, reducing, and it makes free alkali content. So it is necessary to the existence of a certain amount of free alkali, smooth can inhibit lipid oxidation of metamorphosis. But smooth fat contains large amount of free alkali, smooth grease colloid stability and mechanical impact would have been safe, will produce delamination, oil analysis, the loss of smooth performance. 2) Smooth fat does not allow the existence of free acid, especially low molecular organic acids, can produce corrosion to metal. Smooth fat when acidic, can make the fat skeleton failure, fat has become loose. 3, corrosive: smooth and fat can have corrosion effect on metals. Smooth fat on metal corrosion reason mainly has: one is itself contains corrosive substance, such as water, free acid, alkali and active sulphur, etc; Another reason is due to oxidation of organic acids. （ 3) Performance is mainly include: mechanical stability, smoothness. 1, mechanical stability: refers to the smooth fat by mechanical force was destroyed after its construction, the performance of the consistency attack changes. With the strength of shear cone into the before and after changes in value. 2, smooth, smooth performance of smooth fat to apply very close relationship, to the heavy equipment, especially the chain and gear, request the necessary has high comprehensive wear value and sintering load, avoid performance can not meet the request and make the equipment wear and tear. Smooth and fat were evaluated by anti-wear and extreme pressure performance of the most common way is four ball machine and ladder, Ken experiment method.