pressure foaming
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high pressure foaming — A process in which plastics are foamed under high pressure (6 50 bar). The opposite is low pressure foaming … Dictionary of automotive terms
low-pressure foaming — A process in which plastics are foamed under low pressure (1 5 bar). The opposite is high pressure foaming … Dictionary of automotive terms
foaming — [1] The formation of bubbles in the oil of a transmission, differential, or shock absorber, etc. [2] The formation of bubbles in the oil and refrigerant caused by a rapid boiling out or evaporation of the refrigerant dissolved in the oil when the … Dictionary of automotive terms
pressure — [1] The force due to the weight of a substance exerted over the area the substance occupies. In metric measure, it is the force acting on each square metre. To calculate pressure, divide the force (in newtons) by the area (in square metres). It… … Dictionary of automotive terms
fluid mechanics — an applied science dealing with the basic principles of gaseous and liquid matter. Cf. fluid dynamics. [1940 45] * * * Study of the effects of forces and energy on liquids and gases. One branch of the field, hydrostatics, deals with fluids at… … Universalium
Drilling fluid — This article is about fluids used when drilling a well. For fluids used with drill bits during metal working, see cutting fluid. Driller pouring a foaming agent down the rod string on a drilling rig In geotechnical engineering, drilling fluid is… … Wikipedia
Defoamer — Dosage of defoamer A defoamer or an anti foaming agent is a chemical additive that reduces and hinders the formation of foam in industrial process liquids. The terms anti foam agent and defoamer are often used interchangeably. A defoamer is… … Wikipedia
Underbalanced drilling — Underbalanced drilling, or UBD, is a procedure used to drill oil and gas wells where the pressure in the wellbore is kept lower than the fluid pressure in the formation being drilled. As the well is being drilled, formation fluid flows into the… … Wikipedia
Foam — This article is about the substance formed from trapped gas bubbles. For other uses, see Foam (disambiguation). Soap foam bubbles Contents 1 Definition … Wikipedia
Steam locomotive — A steam locomotive is a locomotive powered by steam. The term usually refers to its use on railways, but can also refer to a road locomotive such as a traction engine or steamroller.Steam locomotives dominated rail traction from the mid 19th… … Wikipedia
