The Basis of Hydraulics the characteristics of hydraulic oils are crucial
What is or should be hydraulics? On the one hand, hydraulics is considered ‘the most archaic of all’, but there is, on the other hand, a feeling ‘if we had known it earlier …’. Hydraulics have been around for more than two thousand years, but efficient hydraulic systems only since the application of oil as a pressure medium and the evolution of finishing techniques; without forgetting the rapid development of electronics.
After considering, among other things, in the first part the advantages and disadvantages of hydraulics, we concentrate on this second part on hydraulic fluids and the design of hydraulic systems. As the pressure medium, mineral oils are mainly used (see Table 1 + below), but note that the hydro-hydraulic is certainly not discarded. However, the restrictions are numerous: rust – gel – low viscosity – salt content – easy evaporation – no lubrication – corrosion – limited temperature range, This does not mean that water is not used anywhere as a pressure medium. On the contrary: the very low price and the addition of certain additives reducing mainly the effects of rust and frost make the use of water very interesting for very large fixed installations. Water is, moreover, the ‘most flammable fluid’ par excellence. Hydraulic hose fort worth tx is one of the most common segment that can be used.
The use of a fluid as a vector of energy is, as we have said, a very old technique. Natural waters, seas, oceans, and rivers have so far been an important means of transport – also for energy – and relatively cheap, although not the fastest. Altitudes, currents, and tides are natural data for energy conversion. In modern hydraulics, it is not a question of millions of cubic meters, but of as many millimeters; not a few hundred mill bars, but hundreds of bars, no hours, no days, but milliseconds and minutes.
ENERGY CONVERTER FLUID
Energy is the product of strength and movement. Energy conversion involves adopting one or both parameters for the intended purpose. A fluid is as in deformable as steel and at the same time infinitely more flexible. It is deformed according to its envelope and can be distributed in an unlimited way to fulfill different tasks and then perform a new task, again collected. Hydraulic fluid can be considered as the most important component of a hydraulic system. It connects, indeed, all the other components.
Using a fluid as a power converter also means assigning a number of tasks. In principle, the pressure fluid must fulfill five tasks: