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Anonymous users2024-02-13It's a combination of both. Taken together, the equipment itself is the key; Maintenance is also important. The two complement each other!
No matter how good the equipment is, it is in vain if there is no good maintenance; If there is a problem with the equipment itself, no matter how hard you try to maintain it, it will not help. 1. Pay attention to the quality of the equipment itself, the characteristics of the equipment itself are complex (generally composed of the technical design and material application of the combination of mechanism rationality and practical application, the performance quality of the equipment itself) When the quality of the equipment is perfect, the main use of the process of focusing on maintenance will be longer than the service life of the equipment without maintenance. If the product itself is designed to use materials reasonably (e.g
The characteristics of the punch press are destined to use stamping-resistant, earthquake-resistant, and tough-toughness steel materials, rather than general brittle, soft steel. Second, the human factor, the operation and use should be standardized, and the production should be within the scope of the use of the equipment, so as to form the habit of regular maintenance of the equipment. The lubrication parts should be oiled frequently to reduce wear and tear, and the worn parts should be replaced in time.
Both, the quality of the equipment is determined by the manufacturing materials and production processes, which is the foundation. And the later use and maintenance is the key. The main factor affecting the life of machinery and equipment is "friction".
As long as it's mechanical, there's friction. Friction is a key factor in the service life of equipment. For example, after the engine is started, there is friction between the piston ring on the cylinder block and the barrel arm surface, and the friction between the crankshaft and the bearing.
After the hydraulic piston pump rotates, the friction between the plunger and the cylinder bore, the friction between the distribution plate and the distribution surface of the cylinder body, and the cylinder rod movement of the hydraulic cylinder are all subordinate to the friction pair. As long as there is a friction pair, oil is needed to lubricate, and this lubrication is subordinate to gap lubrication. The three functions of friction pair lubrication:
In lubrication, sealing, force transmission, and gap lubrication, there are also different lubrication states, and the conditions of mechanical sliding between metals are also different. Lubrication is to wrap a layer of oil film on the metal surface, so that when the metal moves with each other under a small gap, the two do not come into contact. If these surfaces are not lubricated, strong friction will occur between them.
Dry friction between metal surfaces not only increases the power consumption of the engine and accelerates the wear of the working surface of the parts, but also may burn the working surface of the parts due to the heat generated by the friction, resulting in the inability of the engine to run. The function of the lubrication system is to continuously deliver sufficient amount of clean engine oil at appropriate temperature to the friction surface of all transmission parts when the engine is working, and form an oil film between the friction surfaces to achieve liquid friction. So as to reduce friction resistance, reduce power consumption, reduce the wear of parts, in order to improve the reliability and durability of the engine.
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Anonymous users2024-02-12It is all related, if there is no quality assurance, it doesn't matter what imported machinery is stronger than domestic ones, if there is no so-called maintenance, no matter how good the quality of the machinery is in vain.
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Anonymous users2024-02-11Answer: The economic life of the equipment refers to the total time from the time the equipment is used (or idle) to the time when the equipment continues to be used in an economically unreasonable position due to physical wear and tear (depreciation), that is, the time when the equipment is installed and put into use in a new state to the time when it is forced to withdraw from the original service function in the year when it is forced to withdraw from the original service function due to the date when the equipment is installed and put into use in a new state to the year when the total annual life cost is the lowest.
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Anonymous users2024-02-10Answer] Cousin: a
The technical life of machinery and equipment is mainly determined by its intangible wear and tear, which is generally shorter than the natural life, and the faster the progress of science and technology, the shorter the technical life of Jubi.
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Anonymous users2024-02-09Answer]: b, d, e
The evaluation of the service life of the equipment mainly considers three factors: the material life of the equipment; The technical life of the equipment; The economy of the equipment lifts the life of the cherry blossoms to congratulate the acre.
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Anonymous users2024-02-08It can be divided into depreciation life, physical life, technical life, and economic life.
The depreciation life of the equipment refers to the depreciation method and principles stipulated in the current accounting system, the original value of the equipment is transferred to the product cost in the form of depreciation and dismantling, until the depreciation cost is equal to the original value of the equipment, which is related to the method of extracting depreciation.
The physical life of the equipment refers to the whole time when the equipment is used from a new state until it is no longer scrapped due to normal function, and the physical life of the equipment is closely related to the quality of maintenance.
The technical life of a device refers to the total amount of time that a device can maintain its value in the market without becoming obsolete and backward. It is closely related to the invisible wear and tear caused by technological progress. The technical life of the equipment also refers to the period of time before the emergence of a new type of equipment that will make the original equipment obsolete due to technical intangible wear and tear.
The economic life of the equipment refers to the number of years of use of the equipment from the beginning of use to the minimum annual cost.
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Anonymous users2024-02-07There are two factors, one is the human factor and the other is the environmental factor.
The proportion of human factors is relatively large, including improper operation, the use of counterfeit and shoddy consumables, the lack of attention to the maintenance of equipment, and the overload of use.
Environmental factors include dusty, humid, excessively hot, excessively cold. Even the ground is uneven.
The above points will greatly reduce the service life of the equipment.
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Anonymous users2024-02-06The answer is cracked] :d
2021 2020 Edition Textbook 57 Pure Number Closed 2019 Edition Textbook P56
2) Bixin technical life of equipment It can be seen that the technical life is mainly determined by the invisible wear and tear of the equipment, which is generally shorter than the natural life, and the faster the progress of science and technology. The shorter the technical lifespan.
At the end of 5 years, the residual value of the equipment is 5 million, and the waste product can be discounted by 2 million, so it is necessary to pay 500-200 = 3 million.
First, the key points before operating the machinery:
1. The dangerous part of the mechanical equipment must be equipped with an appropriate safety shield to prevent the human body from direct contact with the dangerous part of the machinery, and effectively prevent debris from entering the running machinery. Mechanical guards can be broadly divided into five categories, including fixed, interlocking, automatic, tactile and two-hand controls, and one or more of these mechanical guards can be installed for protection purposes. >>>More
Generally around 10-12 years. If the temperature difference between the air inlet and the air outlet is less than 7 degrees, then it means that the cooling and heating of the air conditioner does not meet the standard, and the new air conditioner should be replaced in time. >>>More
There are a variety of methods and techniques that can be used to evaluate machinery and equipment, and some of the most commonly used ones are listed below: >>>More
The equipment for premix processing is generally Bühler equipment, Germany, Huafang Temei in Hubei, and the livestock and poultry premix production equipment is Bühler's, with stable quality and safety.