Today, lubricants are used quite widely, and the diversity of the product market is sufficiently large. One of the good domestic products was the grease tsiatim.
One thing Worth mentioning is that the varieties of fuel quite a lot, and in order to simplify the choice was created the classification of these substances. To date, there are three of them look different from each other in composition, consistency, as well as the use. Also worth mentioning that the consistency of the lubricant can be divided also into three types: plastic, solid, semi-solid. Also important is the fact that they are separated by areas of application. Exist:
Another important factor is the temperature of the working medium of the composition. Because, in some units the figure comes up to 200-350 degrees centigrade and above, it is necessary to use heat-resistant types. One such species is the grease tsiatim.
Lubrication tsiatim name refers to a group of heat-resistant plastic substances. In view of such tool is a synthetic oil that is artificially thickened with complex calcium soap with addition of antioxidant additives. The purpose of the grease tsiatim - a lubrication of rolling bearings of electric machines, control systems and devices, frequency of rotation reaches 10 000 rpm.min. in addition, the composition is used for aggregate bearings installed on the aircraft. Another area of application is the friction and mating surface of materials metal-metal and metal-rubber, which temperature ranges from -60 to +150 degrees Celsius.
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It Should be noted that the grease tsiatim developed by the Central Institute of aviation fuels and oils. A highly praised this means, and argue that the use of this substance has many possibilities. However, in practice it turned out that the scope of this particular brand, as well as its specificity have a fairly narrow characteristics. In order to determine whether it's right or not, is to delve into the study of physico-chemical and performance properties of the lubricant tsiatim.
It is Important to understand that all the features of this grease is due to the physico-chemical composition of the substance. The composition of the raw material is silicone fluid. In addition, the grease contains a thickener in the form of a complex calcium soap. The opportunity to work in a wide temperature range is due to the fact that the composition is silicone fluid. The maximum operation temperature is from -60 (or below) to +300 degrees Celsius. This factor affects what the possibility of using the lubricant extends from various cryogenic devices to high-temperature equipment. It is also important that the silicone fluid vaporizes poorly, and this makes possible its use in a vacuum. Many thanks to these qualities apply grease tsiatim spread to aerospace engineering.
If silicone fluid adds a lot of cruise properties, such additive as a thickener in Soaps, strongly precipitates these qualities, as has many organic options. Dropping temperature, which is around 200 degrees Celsius, reduces the maximum possible working temperature range up to 150 degrees. But because of the weak properties at low temperatures the efficiency of the lubricant ciatim-221 is greatly reduced. Especially when used at temperatures lower than 20-30 degrees. It would seem that the thickening agent has excellent resistance to moisture, but at the same time this advantage is greatly offset by the fact that there is a high hygroscopicity. In other words, the grease will absorb moisture from the ambient air, which will affect the initial consistency.
Currently, it is difficult to say why the characteristics of the lubricant tsiatim such unbalanced. However, the most probable hypothesis concludes that at the turn of the 80-ies it was difficult to create something better. And today it turns out that this kind of lubricant is manufactured according to GOST 9433-80, which was approved in 1980. However, despite these physical-chemical qualities, the most important indicator will be the operational characteristics of a substance.
One of the most important parameters of such a lubricant is low effective viscosity of the substance, which manifests itself at the level of 800 PA/s at temperatures of -50O. This index indicates the possibility of using lubrication in friction, where the number of revolutions reaches 10 000 rpm.min. is Also important that the minimum possible operating temperature is still set as -60 degrees Celsius.
Another important characteristic of the lubricant tsiatim - is its chemical inertness in relation tosubstances such as a hydrocarbon elastomer, a polymer. The principle of dissolving such in such connections do not work, as silicone fluid is not a hydrocarbon compound. It is worth noting that this fundamental property allows the use of grease in such friction pairs as metal-rubber, metal-plastic, plastic-plastic, etc.
But it is important to note, with such qualities to use this lubricant in the friction pair metal-on-metal impossible. Tribological parameters such raw materials is too weak. They are not intended for usage in conventional steel bearings. This is because due to their physico-chemical properties of the lubricant cannot be applied in a friction pair metal-on-metal, as it is not able to provide the necessary wear protection. It should be noted that to create a suitable tribosystem of this lubrication with the addition of any tribopressed also will not work. This is due to the fact that silicone fluid is not able to form a film which will separate the details and protect from friction.
If 221 lubricant is clear, then there is another product lubricant 201. Tsiatim-201 is the instrument antifriction substance, possessing qualities such as resistance to frost, refractoriness, resistance. This tool is used for the lubrication of lightly loaded nodes of rolling friction and sliding.
The Production of such material is based on low-viscosity petroleum oil thickened with lithium stearate, and added anti-oxidation additive. The maximum possible operating temperature of a given substance are in the range from -60 to +90 degrees Celsius.
The advantages of this lubricant include the following features:
Today there are a variety of import counterparts of the lubricant tsiatim. Such substances include Mobiltemp SHC 32, and O-Grease. Such lubricants are manufactured by companies Mobil and Teobil respectively. A analogues which can replace the lubricant ciatim-201.
To replace the grease 221, you can use such imported counterpart, as HUSKEY HVS-100 Silicone Grease. However, the replacement of the domestic fuel and lubricant necessary to accurately understand the operational and physico-chemical characteristics of both brands. As incorrectly selected the analogue may simply not be appropriate for use in specific conditions. A lack of lubrication in a variety of devices greatly reduces their protection against wear, friction, and greatly degrades their performance. In the result the total period of operation of such machines is also reduced.
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