The design of extrusion dies depends on the experience of the designer. After the die has been manufactured, it is tested during an extrusion trial and machined several times until it works properly. The die is designed by a trial and error method which is an expensive process in terms of time and the amount of scrap. In order to decrease the time and the amount of scrap, research is going on t...

The dimensioning of injection heads for the extrusion of rubber profiles is exclusively based on empiric knowledge of the non-linear flow behaviour of elastomers. Thus, the design of injection heads is carried out with subject to the used rubber blend, whereas the geometry of the appropriate profile is achieved by empiric adaptation of the extrusion die. This was one of the motivations for a re...

The effect of geometrical parameters involved in vortex extrusion (VE) die design, on AA1050 aluminium alloy processed by VE were investigated using finite element analysis (FEA) and response surface methodology (RSM). For this, VE die length (L), reduction in area (RA), twist angle , and position of control points in Beziers' formulation (C1) were considered as input parameters and strain inho...

Strain distribution of Al 1100 was numerically investigated during cyclic expansion extrusion (CEE) process using finite element method (FEM). Die angle, corner fillet radius and die chamber diameter were considered as die parameters and friction factor and number of passes as process parameters. The effects of these parameters were investigated on the effective strain and strain homogeneity in...

This paper presents a study of the flow of an incompressible second-order fluid past a stretching sheet. The problem has a bearing on some polymer processing application such as the continuous extrusion of a polymer sheet from a die.

Due to their lightness and good mechanical properties various Al-alloy products obtained by casting, rolling and hot extrusion are still gaining in importance. Hot extrusion of Al-alloys (Figure 1.a) enables the production of a very varied range of profi le shapes, which, due to the above mentioned excellent properties are used mainly in the automotive and electro-industries, in aeronautics, in...

To improve the manufacturing efficiency of ceramic MOX fuels, wet processes, such as extrusion, are studied a novel production method. The flowing behavior, is essential to obtain smooth and defectless rods. This work provides study on rheological properties paste assesses possibility produce nuclear fuel by extrusion. Surrogate powders UO2 PuO2 were used, respectively TiO2 Y2O3. A with 40.9%vo...