Objet de la recherche «fluides».

of the hydraulic fluid of a hydraulic system. It can be caused by solid particles and/or dissolved foreign matter, by mixing with foreign liquids, or by air entering the hydraulic fluid. The solid particles [...] metallic surfaces. Therefore, hydraulic fluids must be filtered. Contamination with foreign liquids occurs through the entry of water, mixing with other hydraulic fluids or lubricants. The contamination may

People would be perfectly happy to work with just one type of oil in mobile hydraulics, i.e. using the same oil in the both the engine and the hydraulics. This, however, is not advisable from either a

In hydraulics a differentiation is generally made between four pressure ranges within which the allocation of pressures is however a little scattered: Low pressure (LP): Pressures up to approx. 100 ba

concepts. The control concepts used in fluid technology only constitute one part of all the possible variations. Due to the unfavourable framework conditions in fluid technology in terms of control technology

Hydraulic spring constant

Damage to the hydraulic fluid primarily due to oxidisation (formation of acid residues) and polymerisation (enlargement of the hydrocarbon chains); creates sludge or resin-like coatings on device parts [...] parts as ageing products. The ageing of hydraulic fluids is accelerated by air (oxygen), water, high temperatures and metal catalysts. It is measured by the neutralisation number (Figure A 13).

Generic term in fluid technology for hydraulic fluids ( hydraulics ).

Fire-resistant fluids based on "water in oil", i.e. an emulsion of around 40% water in mineral oil. Not used in Germany (although they are in the UK, for example).

Biodegradable fluids are hydraulic fluids that biodegrade significantly more quickly than mineral oils. Biodegradation is a chemical conversion caused by microorganisms under aerobic conditions in an [...] freedom from hazardous substances are important criteria for the environmental aspects of a hydraulic fluid.

This situation marked the terminology in fluid technology for a long time. With the O+P-Fachlexikon "Fluidtechnik von A bis Z" (O+P technical glossary "Fluid technology from A to Z"), the 1st edition [...] and explaining the terms and names used in fluid technology. The lexicon triggered some productive discussion about terms and their technical context in the fluid technology sector and among users. University [...] Hydraulic and pneumatic drive and control technology – collectively termed fluid technology – is a comparatively young specialist area of drive and automation technology that only started to become used