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Boundary lubrication
| Oil glossary |
- Form of lubrication between two rubbing surfaces without development of a full-fluid lubricating film. boundary lubrication can be made more effective by including additives in the lubricating oil that provide a stronger oil film, thus preventing excessive friction and possible scoring. there are varying degrees of boundary lubrication, depending on the severity of service. for mild conditions, oiliness agents may be used; by plating out on metal surfaces in a thin but durable film, oiliness agents prevent scoring under some conditions that are too severe for a straight mineral oil. compounded oils, which are formulated with polar fatty oils, are sometimes used for this purpose. anti-wear additives are commonly used in more severe boundary lubrication applications. the more severe cases of boundary lubrication are defined as extreme pressure conditions; they are met with lubricants containing ep additives that prevent sliding surfaces from fusing together at high local temperatures and pressures.
- A form of lubrication effective in the absence of a full fluid film. made possible by the inclusion of certain additives in the lubricating oil that prevent excessive friction and scoring by forming a film whose strength is greater than that of oil alone. these additives include oiliness agents, compounded oils, anti-wear agents and extreme-pressure agents.
- Lubrication between two rubbing surfaces without the development of a full lubricating film. it occurs under high load and low speed, and requires the use of antiwear or extreme pressure additives to prevent metal-to-metal contact.
- Lubrication between two rubbing surfaces in the absence of a full fluid lubricating film. boundary lubrication is often accomplished with the use of extreme pressure additives. example – high pressure gears.
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Граничная смазка, русский
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Boundary, английский
- Граница; пограничный; граничный
- Граница
- N граница, предел | а по- граничный modification, symbol morphological ~ морфологическая граница bounding n связывание theory
- Граница; предел
- An ip subnet, ip address range, ipv6 prefix, or active directory site that identifies the network location of clients in the configuration manager hierarchy.
Boundary -, английский
Граничные условия
Boundary access node, английский
Граничный узел доступа
Boundary alignment, английский
Boundary condition, английский
Boundary conditions, английский
Предельные условия; граничные условия
Boundary current, английский
A warm, deep, narrow, fast flowing current that occurs along the side of an ocean basin. fast-flowing western boundary currents are an important factor in climate control, bringing warm water northward from the equator. in contrast, eastern boundary currents are generally broad and shallow, creeping slowly along carrying cold water towards the tropics.
Boundary delimiter, английский
One or more characters that identify the start or end of a boundary.
Boundary drainage system (for catching and removing surface and ground water), английский
Boundary echo, английский
- Reflection of an ultrasonic wave from an interface. bq: becquerel.
- Отражение ультразвуковой волны от границы раздела. бк: беккерель.
- In ultrasonic testing, reflection of an ultrasonic wave from an interface.15
- Reflection of an ultrasonic wave from an interface.7,22
Boundary echo (ut), английский
A reflection of an ultrasonic wave from an interface.
Boundary element method, английский
Boundary fault, английский
Boundary feedback, английский
A visual indication to the user that the end of the pan-able area is reached. this feedback is provided when sliding the parent window in the direction of pan and seeing it snap back to the initial position once the finger is released. this feedback is also provided when the page is moving with some momentum, and reaches the end of the scrollable region.
Boundary fill, английский
Закрашивание замкнутой области
Boundary films, английский
Boundary layer, английский
- Пограничный слой
- Граничный (приповерхностный слой)
- Граничный слой
- The lowest level of the atmosphere where the surface has a big influence on the wind and weather.
- Пограничный слой. в потоке жидкости, проходящей вдоль границы твердой фазы, — это тонкий слой 08
Boundary layer control system, английский
Система управления пограничным слоем
Boundary layer ignition, английский
Воспламенение в пограничном слое
Boundary limit, английский
Boundary lubricant, английский
Граничная смазка
Lubrication, английский
- The control of friction and wear by the introduction of a friction-reducing film between moving surfaces in contact. the lubricant used can be a fluid, solid, or plastic substance.
- Смазка
- On no account should oil be used to lubricate pin-tumbler cylinders. graphite is the conventional lubricant for this mechanism.
- Смазка (действие)
- The act of injecting a fluid, normally bentonite and/or polymers, to reduce the skin friction and jacking forces on the jacking pipe during installation. the fluid fills the annular space.
- Means of reducing friction either around a pipe being jacked or a shaft being sunk into the ground.
- The control of friction and wear between two moving, touching surfaces by placing a friction-reducing substance between them.
- Control of friction and wear by the introduction of a friction reducing film between moving surfaces in contact. the film may be fluid, solid or plastic.
- Reduction of friction or wear between two load-bearing surfaces by the application of a lubricant; includes boundary lubrication (thin or interrupted fluid film, especially bearings where wear occurs); mixed film, where some liquid pools support the load; elastohydrodynamic (high-pressure loads increase the lubricant’s viscosity and load-carrying capacity, especially in gears); hydrodynamic (a thick fluid film lubrication, especially in journal bearings) and hydrostatic (external pump pressure used to form a thick fluid film, as in start-up of journal bearings).
Development, английский
- Разработка; доводка
- Разработка; развитие; проявление
- Разработка; отработка; отладка; вариант; модификация
- Вариант; развитие (изобретения)
- 1. the process of growing, or of becoming larger and stronger, or more complex the development of the embryo takes place in the uterus. 2. something which happens and causes a change in a situation report any developments to me at once.
- N развитие cognitive ~ когнитивное развитие
- Министерство жилищного строительства и городского развития (сша)
- Property under construction, including preparation and installation of infrastructure
- Any computer code or materials, other than products, fixes or preexisting work, developed by microsoft or in collaboration with customer, which is provided to customer in the course of performance of a statement of services.
- Разработка (месторождения).
- Event, happening, occurrence
- Event, happening, occurrence something that has happened, or the act of making or improving something
- The evolution of something an individual is working on. personal qualities, mental well-being, or useful skills can all be developed and improved.
Lubricating, английский
Conditions, английский
- The terms of surrender.
- Обстоятельства; условия; режим
- Грузовая устойчивость ~ of crane during lifting operations грузовая устойчивость крана ~ of geometrical shape геометрическая неизменяемость ~ of slope устойчивость откоса ~ of volume постоянство объёма
- Наблюдения за работой сооружений в условиях эксплуатации
- Работа конструкции в условиях эксплуатационных нагрузок
- A set of specified constraints and parameters that are part of the rights group bundled into a rights label. these are enforced at the time of consumption.
Containing, английский
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Boyle’s law, английский
The absolute pressure of a fixed mass of gas varies inversely as the volume, provided the temperature remains constant.
Bomb oxidation, английский
A test for the oxidation stability of a product obtained by sealing it in a closed container with oxygen under pressure. the drop in pressure of the oxygen is a measure of the amount of oxidation that has occurred.
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