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Talking about the smooth handling of textile equipment
Source: China Bearing Network Time: 2018-05-10
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Brief introduction to the smooth handling of textile equipment: smooth processing of textile equipment touches the acquisition and storage skills to repair many links, a system engineering textile equipment smooth speed load conflict method domestic textile equipment imported textile equipment smooth demand is not the same smooth method is not the same as the correct selection of smooth oil Variety labeling for smooth oil storage operation equipment repair smooth process unique attention to abrasive wear liquid dynamic pressure bearing common shaft shell with shaft textile equipment smooth handling touch acquisition, storage, skills, handling, repair and many other links; is a system engineering The smoothness of textile equipment depends on its speed, load and conflicts; the domestic textile equipment and imported textile equipment have different requirements for smoothness; the smooth method is different. It is necessary to correctly select the varieties and labels of smooth oil; Good storage of smooth oil. In the repair and smooth process of equipment, we must pay special attention to abrasive wear, repair operation methods and the application and handling of hydraulic oil.
Doing a smooth and smooth handling of equipment is an important part of modern industrial equipment handling operations. Strengthening the smooth handling of equipment; ensuring the normal operation of equipment; saving energy; reducing repair costs; extending the service life of equipment; Important route.
1 The smooth mechanism and the smooth oil collide in the relative movement of the mechanical movement pair; because the external touch touches and conflicts; the energy transmitted by the machine is consumed by the heat caused by the conflict; this consumes energy; Wears out the parts. The smooth effect is to form a smooth oil film that can accept some or all loads on the conflict surface; separate the two movement pairs from the surface; play a smoothing effect; convert the metal-to-metal conflict into Internal conflict between oil molecules with lower shear strength; then reduced conflict resistance and appearance wear; reduced energy consumption; extended equipment life.
Petroleum-based smooth oils are composed of petroleum; the primary elements that make up petroleum are carbon and hydrogen; these two elements account for 96% to 99.5% of the petroleum composition; during this period, carbon accounts for about 85% to 87%; It accounts for about 11% to 14%. The composition of hydrocarbons contained in petroleum-based smooth oils determines the primary functions of viscosity, oxidation and other properties of smooth oil. The viscosity of smooth oil is an extremely important target; it is lost to conflicts and loads. The effects of bearing capacity, oil film thickness, smooth oil flow and sealing are obvious; smooth oils with different viscosity have different functions. In addition, attention should be paid to the corrosion resistance, rust resistance and pour point of smooth oil (low temperature flow) (sex), flash point, moisture, mechanical impurities and acid value, etc. The water content in smooth oil is a more important physical target; if the water content exceeds the support, the damage to the smooth oil is greater. In order to reach under different conditions Application requirements; participate in different additives in smooth oil level; to improve the physical and chemical functions of smooth oil. For example, participate in pour point depressant to obtain smooth oil with low freezing point; ensure the use of low temperature in winter; participate in sulfur, Phosphorus, metal soap and polar compounds can improve the extreme pressure and anti-wear function; avoid metal surface scratches and seizures. Smooth conditions can be divided into smooth fluid, smooth fluid, smooth groove and smooth mixing. There are several situations. Usually the smooth condition is that the fluid is smooth; it is also more ambitious and smooth. The smooth conditions of different conflicts are different.
2 Smoothing requirements of textile equipment The smoothness of textile machinery and equipment should be determined according to its speed, load and conflicts; it is usually clearly marked in the book; it should be strictly implemented according to demand. Domestically produced old type equipment (such as 1452A type) The machine, G142B sizing machine, 1515 looms, etc.) have lower speed; the load is not large; the demand for smoothness is not too high. The domestic new equipment (such as high-speed warping machine, double-slot sizing yarn) Machines, shuttleless looms, etc.) have made great progress in speed and load; their smoothing requirements have also improved accordingly; smooth methods have also been changed; widely used methods such as gathering oil supply and smooth oil bath.
Imported textile equipment has the characteristics of high speed, heavy load and good reliability of equipment operation; most of the transmission methods use gearbox transmission; most of the support points of the drive shaft use rolling bearings; the reliability of the transmission is improved together; Smooth method. In the new type of textile equipment; most of them use the method of collecting smooth or smooth oil tank of the gearbox; therefore, it is required to have smooth oxidation resistance, rust resistance and stain resistance. The smooth cycle of imported textile equipment There are specific clarifications in the clarifications; the daily, weekly, monthly, and quarterly requirements are very clear; the production should be strictly enforced. Under normal circumstances; Smooth grease; most of them are products of internationally renowned companies; their functions are better; as long as smoothing according to the rules can ensure the normal operation of the equipment. In smooth operation; must avoid oil blockage; pay attention to the label of smooth oil; View the oil level display window of the smooth oil; avoid oil shortage and cause mechanical damage; form economic loss. In the usual smooth handling; According to the smooth demand of the equipment; formulate a specific smooth cycle; strictly follow the fixed, fixed, fixed point, quantitative, punctual "five fixed" for smooth; together with a corresponding viewing method; to ensure smooth quality; to ensure textile equipment Normal operation; carry forward the normal performance of the equipment.
3 Selection and storage of smooth oils There are many models of textile equipment; the speed and load are different; the smooth oil labels used are different. The varieties and labels of smooth oils are complicated; the varieties and labels of smooth oils are correctly selected and The storage of smooth oil is unique. The selection of smooth oil can be carried out according to the varieties and labels of the equipment in the book. When purchasing smooth oil; pay attention to the physical and chemical functional objectives of smooth oil; such as the viscosity and resistance of smooth oil Corrosion, rust resistance, flash point, water content, impurity content and acid value, etc. The production should be based on the equipment's practical functions, operating conditions and smooth oil producers; consider the economic benefits; and reach the smooth demand Under the guidelines that are conducive to handling; as far as possible to reduce the variety and label of smooth oil; to reduce the cost of storage; the important parts of imported equipment must use imported smooth oil; to improve the smooth function; reduce energy consumption; Use lifespan; unimportant parts can think about using domestic smooth oil;
The storage and storage of smooth oil has an important influence on the function of smooth oil. Petroleum products are easy to differentiate when exposed to light, heat and non-ferrous metals; uniquely and copper touch; perhaps chemical reaction with oxygen attack in the air; A stable oxide; even a gelatinous and acidic substance; then severely affect its function; even a corrosive action to damage the machine. In order to avoid the oxidation of the smooth oil; it should not be touched with non-ferrous metals such as copper and lead during storage; When storing the original barrels of smooth oil, it should be hygienic, protected from light, cool and ventilated; all varieties and labels should be marked with awake intentions; avoid mixed varieties and labels. The storage time of smooth oil should not be too long; usually should not exceed 1 Avoid tampering and affect the smoothing effect; therefore, it is necessary to strictly grasp the quantity of storage. Some smooth oil needs to be used after natural deposition for a period of time; for example, hydraulic oil should be stored for one week after being placed, and then put into operation; Therefore, some smooth oils must grasp the criteria for not being put into use.
4 The problem should be paid attention to when the equipment is smooth. The working environment of the textile equipment is poor; most of them work under the condition of high dust content. The support points of the machine transformation parts are susceptible to dust pollution; the conflict resistance is increased; the mechanical wear is aggravated. In the repairing and smoothing process of the equipment, it is necessary to pay special attention to abrasive wear. Abrasive wear is the abnormal wear caused by the worn particles (fine sand, iron filings, dust, etc.) in the two conflicting appearances; Severe. Wear of abrasive particles is caused by poor repair and smooth handling; metal powder and smooth system that are intentionally left in the dust of smooth spots, poorly sealed, external dust intrusion, poor smoothing agent, and run-up Bad filter equipment will cause abrasive wear. Abrasive wear has a great impact on the life of the machine; wear and tear in the industry accounts for about 50%; it is regarded as the enemy of industrial machinery damage; should be satisfied to pay attention to Abrasive wear; the origin of abrasive particles is related to repair operation and smooth quality; therefore, it is extremely important to strengthen the repair operation and smooth handling. Other atmospheres usually There are dusts that are invisible to the naked eye; the dust in the industrial area is more dusty; the size of the dust is mostly around 10 μm; the naked eye is not visible. The dust suspended in the air is mainly sand (SiO 2 ) and aluminum oxide ( Al2O3) powder; its hardness is above A85 degree of Shore; the wear on the motion pair is extremely severe. The smoothness of the machine is smooth; the thickness of the fluid smooth oil film is between 10μm and 12μm; the thickness of the smooth oil film is less than 0.1μm; The oil film is 0.05μm～1μm between the two; the dust particle size is much larger than the oil film thickness; so the dust pollution is smooth after the oil film; the abrasive wear is extremely severe to the mechanical wear. In the practice; equipment Nearly half of the causes of the disease are caused by poor smoothness; the reasons for the poor smoothness are: whether the oil can be used properly, whether the oil circuit can be dredged, whether the oil is contaminated, whether the fueling method is correct, whether the oil change can be timely, etc. These can cause mechanical wear and tear; cause mechanical problems.
Whether the repair operation method is correct; the impact on the wear and tear of the sports pair is extremely important; whether it can be cleaned during the repair process, whether the test cloth can be sanitized, etc. will affect the wear process. When the smooth oil is stored and stored; the container cannot be stored without being covered. Workshop; and refueling things should be regularly scheduled; avoid smooth oil contamination; and cause increased wear and tear. In the repair work; should carefully replace the machine parts and smooth oil replacement operations; replacement machine parts wipe test must be Hygiene; the important parts of the crepe should be removed and used first; to avoid dust and dirt; the newly replaced parts should be completely hygienic; the device parts should be completely hygienic. If the gears are replaced, the new gears will be finished and replaced. Smooth oil and then put into normal operation. If the bearing is replaced, if the bearing is sealed; the bearing has participated in the smooth grease; no need to participate in the smooth grease; the seal is not damaged when the device is installed; avoid smooth grease overflow and dust aggression, when heating the device Pay attention to the heating temperature should not exceed 120 °C; avoid smooth grease melting and overflow. Pay attention to sanitary work when replacing bearings together; The dust, impurities or moisture in the grease will wear more to the bearing; when the content of impurities is increased from 0 to 0.5%, the wear can be added 5 to 10 times. The amount of smooth grease should be appropriate; usually the bearing cavity 1/2 to 1/3.
The application and handling of hydraulic oil is higher than the usual smooth oil demand. It has been proved that the hydraulic system works well; it depends largely on the selection, storage and operation of hydraulic oil; at least 75% of hydraulic transmission problems are Because the selection of smooth oil is unreasonable or the storage is not well formed. The hydraulic oil should have outstanding smooth function, heat-resistant oxidation function, insulation function; and have a high volumetric modulus of elasticity. In normal operation, it is necessary to remove the hydraulic system at regular intervals. The filter screen; the hygienic filter can ensure the function of the hydraulic oil; remove the impurities in time; the disposable filter has to be replaced regularly. The repair of the hydraulic system; the disassembly and assembly of the solenoid valve, pipeline, etc. should be protected by the removed parts. Work; avoid impurities entering the system to form pollution. The parts to be replaced should first remove the rear device; when the valve, cylinder, oil storage tank of the hydraulic system is repaired or sanitized; the cotton material, cotton cloth, etc. cannot be used for the wipe; the silk cloth or vinyl resin is used. Sponge rubbing. The hydraulic system is inevitably contaminated by water, oil-soluble and non-oil-soluble impurities mixed with oil and hydraulic oil; therefore, it must be timed. Oil. In practice, the hydraulic system is inevitable to leak slightly; it needs to make up for new hydraulic oil; however, it should be replaced by cycle; it can not be replaced or replaced. It is necessary to completely clean the dirt of the hydraulic system when replacing hydraulic oil; Replace with the same number of hydraulic oil; turn the oil pump to 60 ° C for at least 2 h; replace the oil for at least 24 h; or filter through the filter and liquid bag to stop without impurities. Hydraulic oil must pass through 150 mesh The filter of /25.4 mm~200 mesh/25.4mm can only be used after filtering.
5 Smooth operation of equipment to improve the smooth operation of equipment is an important part of the company's equipment repair and protection operations; smooth also known as preventive protection; the first is to prevent the occurrence of equipment incidents and improve equipment yield; add economic benefits. The smooth handling can improve the operating rate of the equipment, reduce the rate of defects, reduce the repair cost, and extend the service life of the equipment. In particular, the smooth processing of equipment such as sizing machines, warping machines, air compressors, etc. It is extremely important to ensure that it is working properly.
Do a good job of smooth handling; from the inside of the company to be sound arrangements, arrangements for implementation; from top to bottom must be equipped with special (particular) staff; well-established smooth system. Do a smooth handling should be based on the price of oil, the role of induction Usually, the cost of smoothing agent in the factory accounts for 3%-10% of the cost of mechanical protection protection; the cost of the product is only 0.1%~1%; but it has a great impact on repair and protection and production. The starting point for smooth operation of the equipment is to ensure Equipment normal operation; save energy; reduce repair costs; extend the use of life; it is fundamentally to improve the company's economic benefits. Equipment damage due to poor smoothness is severe; especially after the import of critical equipment damage; long acquisition period of accessories; The parking time is long; the production of the latter process is severely out of line; the completion of the production plan is affected; the economic benefits of the company are seriously lost. Therefore, doing a smooth operation is one of the key factors to ensure and improve the company's economic efficiency.
The company's smooth handling is a relatively complicated system engineering; it touches on many links such as acquisition, custody, skills, handling, repairing, etc. In today's growing number of imported textile equipment; how to smooth the domestic and imported textile equipment; From the oil variety, acquisition, storage, use, plus (changing) oil operations; also need to constantly try to explore the discussion; for the future to manage the import and domestic textile equipment stacking experience; make the smooth operation of the equipment to improve day by day.
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