The hydrostatic extrusion is a new method of extrusion process. The most important advantage of this method is reduction of friction and close tolerance for the coating thickness. In this study, the hydrostatic extrusion simulation of bimetallic wires has performed using of finite element method. In the following the advantages of hydrostatic extrusion compared to the direct extrusion are prese...

Forging dies at high temperatures are under contact pressure, variable mechanical loads and thermal shock, furthermore they should withstand wear and friction in a high level. So, in order to increase die life, the selection of die material, coating and hardness is essential. In this review, various methods used for die life enhancement such as carbide coating, using the super alloy stellite 6 ...

Background The performance of TVS, TRS and MRI for the diagnosis of DIE have been separately reported in earlier studies. However, the three methods have not been concurrently compared in terms of their overall performance and classified results as per different anatomical locations of DIE lesions in a large study population. This study was an attempt to compare pelvic magnetic resonance imagin...

Oxides of Nitrogen are the major emission from a diesel engine. It is due to heterogeneous diffusion combustion system with fuel-rich regions, which produce high local temperature around the periphery of the spray where high formation rate of NO is promoted. Various techniques are therefore employed to reduce the NOX emission like EGR, SCR, etc. In this present work a rotating injector is a tec...

Das Benzoldimer ist ein Prototypsystem f r die Untersuchung nichtkovalenter Wechselwirkungen zwischen aromatischen Systemen, die durch Dispersionskr fte bestimmt werden. Es weist zwei miteinander konkurrierende Gleichgewichtsstrukturen auf: eine gekippte, T-fçrmige (edge-toface) und eine, in der die beiden Benzolringe parallel angeordnet, aber zueinander verschoben sind (stacked). Sowohl der ve...

Deutschland steht 2009 vor einem überaus schwierigen Jahr. Vorausschauende Manager schielen aber weniger auf die nicht beeinflussbaren Eckdaten, sondern finden heraus, welche Verbesserungspotenziale in ihrer Firma schlummern. Eine Alternative zu Cost-Cutting-Programmen kann die Optimierung des Projektmanagements sein. Ein kritischer Blick auf den Markt der dafür erforderlichen Projektmanagement...

High speed and absence of a precise control over pressure distribution confine sheet Electromagnetic Forming into a die to simple shapes having shallow depth. It is possible to reach a higher depth by using a convex punch instead of a concave die. In this study, sheet Electromagnetic Forming on a punch and sheet Electromagnetic Forming into a die are investigated. The electromagnetic part of th...

The hydrostatic extrusion is a new method of extrusion process. The most important advantage of this method is reduction of friction and close tolerance for the coating thickness. In this study, the hydrostatic extrusion simulation of bimetallic wires has performed using of finite element method. In the following the advantages of hydrostatic extrusion compared to the direct extrusion are prese...