Hydrostatic extrusion

Hydrostatic extrusion

Hydrostatic extrusion is the process by which a billet of material, usually a metal is formed into an extrudate of smaller cross-sectional area. This is achieved by applying high pressure from a hydraulic ram to the billet through the medium of a liquid, and hence the notion of 'hydrostatic' extrusion. The pressurised medium then forces the billet through a specially shaped die and the extruded product emerges from the exit end of the die.

The process must be carried out in a sealed cylinder to contain the hydrostatic medium. The speed of the ram and required extrusion pressure are dependent on the nature of the billet material (stiffness, abrasiveness, density and other physical properties) and the reduction ratio of the cross-sectional area of the billet and the die aperture. Due to frictional and other effects between the billet and the die, heat is generated during extrusion. This can be reduced by means of lubrication.

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Hydrostatic extrusion — Hydrostatic extrusion. См. Гидростатическое выдавливание. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • hydrostatic extrusion — Смотри Гидроэкструзия …   Энциклопедический словарь по металлургии

  • Extrusion — is a process used to create objects of a fixed cross sectional profile. A material is pushed or drawn through a die of the desired cross section. The two main advantages of this process over other manufacturing processes is its ability to create… …   Wikipedia

  • Гидростатическое выдавливание — Hydrostatic extrusion Гидростатическое выдавливание. Метод продавливания заготовки через фильеру сжатой жидкостью. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003… …   Словарь металлургических терминов

  • Гидроэкструзия — [hydrostatic extrusion] Смотри Гидростатическое прессование …   Энциклопедический словарь по металлургии

  • ГИДРОЭКСТРУЗИЯ — [hydrostatic extrusion] гидростатическое прессование …   Металлургический словарь

  • гідроекструзія — гидроэкструзия hydraulic extrusion, hydrostatic extrusion *hydraulische Extrusion – обробка (продавлювання крізь формуючі пристрої) матеріалів тиском, створюваним за допомогою спеціальних компресорів рідиною …   Гірничий енциклопедичний словник

  • solids, mechanics of — ▪ physics Introduction       science concerned with the stressing (stress), deformation (deformation and flow), and failure of solid materials and structures.       What, then, is a solid? Any material, fluid or solid, can support normal forces.… …   Universalium

  • Polybutylene — Other names polybutene 1, poly(1 butene), PB 1 Identifiers …   Wikipedia

  • Gym floor cover — is a large plastic tarp, usually divided into equal sections convert|10|ft|m|abbr=on. wide each to cover up the entire gym floor. Each section is installed slightly overlapping adjacent ones and secured with special adhesive tape. These covers… …   Wikipedia