Abstract Wide stiffened aluminium panels are extensively used in aerospace, marine, and civil industries due to their light-weight structure high stiffness. In this paper, a wide panel was manufactured using the principle of multi-container extrusion, comparative study conducted two different die designs at same extrusion condition, which metal flow behaviour, force, welding quality, billet mat...

The paper presents a mathematical model developed for calculating the force effect on punch in process of high-speed combined hot extrusion bimetallic road milling picks under plane deformation conditions. To solve problem, is divided into two phases: acceleration phase and braking phase, which consists stages. A distinctive feature that it allows analysis reverse extrusion, metal flows opposit...

During the porthole die extrusion, separated metal streams are welded together in welding chamber. The conditions under which this occurs and integrity of weld seam extrudate impacted by design bridge, including features such as its shape dimensions. In research, commercial finite element method (FEM) software package, DEFORM, was used to run a series simulation experiments order quantitatively...

The catalytic decarboxylation of aromatic carboxylic acids provides an alternative route to generate aryl metal species in situ without using organometallic compounds. Herein, a cationic iridium-catalyzed through CO2 extrusion is described. substrate scope broad, and the reaction proceeds even presence various functional groups. Additionally, potential utility was demonstrated decarboxylative h...

rectangular waveguide (wr) is one of the earliest types of transmission lines. rectangular waveguide can be produced by hot extrusion process. in this paper, the hot extrusion process of cuzn5 rectangular waveguide was investigated by finite element method (fem). in addition, genetic algorithm method (ga) was used to optimize the die geometry and process conditions to achieve the lowest magnitu...

The study was carried out, to explore the potentiality of extrusion technology for elimination of antinutritional components of cereal brans. Extrusion variables were moisture content (14, 17 and 20 %) and temperatures (115 °C, 140 °C, 165 °C). Phytic acid, polyphenols, oxalates, trypsin inhibitor, bulk density and color of brans after extrusion were analyzed. All four raw bran samples had high...

This work investigates existing metal-graphite joining methods with friction stir extrusion (FSE) proposed as a viable alternative process. Current for these materials, including adhesives, mechanical fastening, and brazing, all have shortcomings that are desired to be avoided. Aluminum AA6061-T6 is used isostatically molded graphite establish proof-of-concept FSE. Empirically determined operat...

Co-extrasion involves extrasion of multiple layers at the same time. Functionally graded materials comprising various layers with different properties can be produced through co-extrusion. Rheological control is vital for successful co-extrusion of layered cement-based materials. The paste flow in the barrel and the die land in a ram extruder should be plug-like, while the paste should be shear...

PURPOSE To evaluate the characteristics of patients with anophthalmic cavity who developed sphere extrusion. METHODS A retrospective observational study was done evaluating 37 patients with anophthalmic cavity and sphere extrusion at the "Faculdade de Medicina de Botucatu-UNESP". RESULTS Extrusion was observed in enucleated and eviscerated cavities. The majority of the patients had the eye ...

Membrane extrusion was investigated for predicting the stability of soya phosphatidylcholine liposomes and surfactosomes (Tween 80-enriched liposomes) to nebulization. Formulations were prepared with or without cholesterol, and salbutamol sulfate (SBS) or beclometasone dipropionate (BDP) were incorporated as model hydrophilic or hydrophobic drugs respectively. Formulations were extruded through...