Elementos de tribologia: Curso de especialização em engenharia de fabricação e máquinas ferramentas. [Benedito de Moraes Notes: Apostila. Description. CLAUDINO, João B. Motores Diesel Comerciais no Brasil e no Meio Ambiente. São Paulo: Editora Núcleo. Apostila de Tribologia. Escola de Engenharia de São . Apostila Uploaded by. jonalthan · Treinamento Transportador de Correia. Uploaded by. jonalthan · Sensores Inteligentes PCB.

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Apostila para sistema fluidos mecânicos – em inglês

In mechanical working operations most of the tools fail not by tool breakage caused by for instance fatigue but by a continuous rubbing away of the tool material. The phenomenon of the Industrial Revolution led to the mechanization of industry and transport.

Economou, A theoretical analysis of the twin-land type of oil control ring, J.

The operating point will always be where the two curves intersect. Although the cutting speed is given by the tool manufacturer, it results in a very clear diffusion pattern. Thus, it was extracted approximately liters of oil per day.

Centrifugal pumps are characterized by the relationship between the flow rate Q they produce and the pressure H at which the flow is delivered. The first trace of lubrication was found in the sled wheel that belonged to Ra-At-Ka King of Egyptproved by analysis that the lubricant was beef or ram tallow.


Apostila NX 5

If steel is used as a workpiece material, it is important that the tool material has a much more negative enthalpy in comparison with any possible combination of iron with one of the elements of the tool material. Please verify that you are not a robot. Please re-enter recipient e-mail address es. Your request to send this item has been completed. Lubrication nowadays As well as the machines, lubricants suffered technological changes to meet the extreme requirements in industrial processes.

Apostilaa was known as “rock oil, mineral oil and naphtha oil.

Search WorldCat Find items in libraries near you. More like this Similar Items. Pumps come in a variety of sizes for a wide range of applications. The influence of both variables is clearly shown. The pump is among the most inefficient of the components that comprise a pumping system, including the motor, transmission drive, piping and valves.

The pressure head that a pump will develop is in direct relationship to the impeller diameter, the number of impellers, the size of impeller eye, and shaft speed. In case of fittings, friction is stated as an equivalent length of pipe of the same size.

Apostila NX 5 – Apostila do Unigraphics

Would you also like to submit a xpostila for this item? Since, worldwide, centrifugal pumps account for the majority of electricity used by pumps, the focus of this chapter is on centrifugal pump.


They can be classified according to their basic operating principle as dynamic or displacement pumps. The E-mail Address es you entered aposyila are not in apostjla valid format. Parte 1 de 5 6. Please enter the message. Please choose whether or not you want other users to be able to see on your profile that this library is a favorite of yours. Next, the flow stress of the workpiece material will be discussed. Therefore diamond is completely unsuitable at high temperatures in a mechanical working process in combination with iron or steel.

Apostila de Tribologia – Stoeterau

Friction head losses must be minimised to reduce pumping cost, but after eliminating unnecessary pipe fittings and length, further reduction in friction head will require larger diameter pipe, which adds to installation cost. Water enters the center eye of the impeller and exits the impeller with the help of centrifugal force. Find a copy in the yribologia Finding libraries that hold this item ASME 2 — Xu, The Apoztila of circumferential waviness of the journal on the lubrication of dynamically loaded journal bearings, SAE Technial Paper, 9 pp.