In the production workshops of the food industry, where the equipment operates in conditions of high humidity, sharp temperature fluctuations, as a result of use the lubricants and correct selection of them, it is possible to prevent excessive consumption of energy for friction, to reduce the speed of wear of parts and to save the working surfaces of parts from corrosion.
The energy consumption for overcoming friction of rest, movement and sliding (rolling) is greatly reduced if there is a layer of a lubricant between the moving parts. To increase the longevity of the machine parts, using lubricant, for which it is necessary to create conditions for liquid friction. However, liquid lubrication may be disturbed when the machine is started to be rotatable and vibrational; sharp fluctuations in speed and load; high temperature; high shock pressure; insufficient impact strength of the oil; lack of oil; stop of the car. In order to lubricate the equipment, it is necessary to choose the type of lubricant, which corresponds to the given conditions of the machine operation (type of equipment and parts to be lubricated, type of friction, temperature conditions, load, etc.).
Hand and forced (circulating) lubrication systems are used. Units of friction machines lubricate individual, centralizing them when the nodes of machines or the unit are lubricated from one or several oil systems serving the group of nodes, and in a mixed way, when some units of the machine or the unit are lubricated by the oil systems, and the others - individually.
Lubricants are divided into liquid oils for lubricating machines and mechanisms that operate at high speeds and have consistent lubricants, operating at low speeds, under high load and at high temperatures. Liquid lubricating oils are divided into: those operating at a temperature not higher than 50 ° (industrial); those operating at 50-250 ° (special purpose) and those operating at temperatures above 250 ° (for steam engines and internal combustion engines). Consistent greases consist mainly of mineral oil.
Depending on the type of thickener, the grease oils are distinguished: sodium, calcium, calcium, sodium, aluminum, barium, lithium, lead, and others. The oil consumption by grade for each type of equipment is determined by the manufacturer's passport. On the basis of these data, for the whole equipment, cards and lubrication schemes are being developed, which are stored in the shop mechanics.
Науковий керівник к. т. н. доц. Закалов О.В.
УДК 637.523 Качуровська М. - ст. гр. ХО-41 Тернопільський національний технічний університет імені Івана Пулюя
Request has been sent. We will call you back.