Characterization of Metal Flow in Metals Processing by a Combined Approach using Advanced Experimental Grid Pattern Techniques Coupled with FE-analysis

2012 ◽  
pp. 1501-1513 ◽  
Author(s):  
Henry Valberg
Keyword(s):  
Metal Flow ◽  
Fe Analysis ◽  
Combined Approach ◽  
Grid Pattern ◽  
Metals Processing

On the Balance of the Metal Flow in Porthole Dies with Differently Sized Porthole Channels

2013 ◽  
Vol 585 ◽  
pp. 77-84 ◽  
Author(s):  
Henry Sigvart Valberg ◽  
Dirk Nolte ◽  
Yawar Abbas Khan
Keyword(s):  
Metal Flow ◽  
Fe Analysis ◽  
Grid Pattern ◽  
Fem Model ◽  
Unequal Size ◽  
Flow Through

The relative balance between the metal flow in two portholes in extrusion has been investigated by experiments and FE-analysis. The investigation deals with asymmetric extrusion, i.e., the billet is extruded through a die with portholes of unequal size. Metal flow has been characterized by an experimental grid pattern technique. An optimized FEM-model of the experiment has been built and the experimental metal flow is found to be mimicked accurately by this model. The velocity conditions in the two differently sized ports feeding material into the weld chamber, and further from here into the extrudate, have been investigated to see if the balance between the flow through the two channels changes as extrusion proceeds. Increasing asymmetri between the two portholes has been realized in the analysis by displacement of the die bridge laterally in relation to the direction of extrusion.

scholarly journals A novel combined approach based on HTF-Microbi.Array and qPCR for a reliable characterization of theBifidobacterium-dominated gut microbiota of breast-fed infants

2013 ◽  
Vol 343 (2) ◽  
pp. 121-126 ◽  
Author(s):  
Manuela Centanni ◽  
Silvia Turroni ◽  
Elena Biagi ◽  
Marco Severgnini ◽  
Clarissa Consolandi ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Combined Approach ◽  
Breast Fed

scholarly journals Characterization of mechanical properties by indentation tests and FE analysis – validation by application to a weld zone of DP590 steel

2009 ◽  
Vol 46 (2) ◽  
pp. 344-363 ◽  
Author(s):  
Kyung-Hwan Chung ◽  
Wonoh Lee ◽  
Ji Hoon Kim ◽  
Chongmin Kim ◽  
Sung Ho Park ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Weld Zone ◽  
Fe Analysis ◽  
Indentation Tests

Experiment and FE Analysis of Compression of Thick Ring Filled with Oil

2018 ◽  
Vol 767 ◽  
pp. 141-148
Author(s):  
Yoshiki Tatematsu ◽  
Mitsuka Morimoto ◽  
Kazuhiko Kitamura
Keyword(s):  
Weight Reduction ◽  
High Strength Steel ◽  
Metal Flow ◽  
High Strength ◽  
Fe Analysis ◽  
Inner Diameter ◽  
Save Energy ◽  
The Ideal

Reducing automobile weight has been necessarily accelerated to save energy and improve drivability. Accordingly, use of high strength steel and hollow sections help in weight reduction. In this study, the effect of trapped oil has been investigated to improve the metal flow in upsetting of a hollow workpiece using no mandrel. It was found that the ideal deformation without friction between the dies and the workpiece was nearly achieved when a low and thick ring with trapped oil was upset. The inner diameter of the oil-filled ring was expanded more than that of the benchmark ring. The effect of the expansion of the ring and the reduction of the friction proved helpful in trial forming of a gear preform.

Understanding T-Ingot Horizontal DC Casting Using Process Modelling

2006 ◽  
Vol 519-521 ◽  
pp. 1461-1466 ◽  
Author(s):  
André Larouche ◽  
Malcom Lane ◽  
Massimo DiCiano ◽  
Daan M. Maijer ◽  
Steve CockCroft ◽  
...  
Keyword(s):  
Process Model ◽  
Defect Formation ◽  
Metal Flow ◽  
Casting Process ◽  
Production Costs ◽  
Process Characteristics ◽  
Powerful Approach ◽  
Foundry Alloys ◽  
Dc Casting

Horizontal continuous casting process has been successfully implemented in Alcan for the production of T-ingots of primary aluminium and foundry alloys. Ability to achieve increased productivity targets and reduce production costs relies on a fundamental understanding of key process characteristics and operating parameters. Thanks to the long-standing experience in vertical DC Casting, numerical modelling appeared as a powerful approach to understand phenomena related to metal flow, solidification and ultimately defect formation. As part of a collaborative R&D program, a global model of horizontal casting process, integrating specialized sub-models on critical aspects of the process such as meniscus dynamics, is being developed. Experimental characterization of primary and secondary cooling is performed in parallel with modelling work to provide the information necessary to properly characterize mould heat transfer. This paper will present the development of a 3D process model of T-ingot casting along with its application to solve specific process challenges that have emerged during the first years of production in the plant.

Use of Electron Backscatter Diffraction Technique in Characterization of 6XXX Aluminum Alloy Extrusions

2000 ◽  
Vol 6 (S2) ◽  
pp. 954-955
Author(s):  
Steven R. Claves ◽  
Wojciech Z. Misiolek ◽  
William H. Van Geertruyden ◽  
David B. Williams
Keyword(s):  
Electron Backscatter Diffraction ◽  
Metal Flow ◽  
Extrusion Process ◽  
Cross Sectional ◽  
Electron Backscattering Diffraction ◽  
Electron Backscatter ◽  
Individual Grains ◽  
Backscatter Diffraction ◽  
6Xxx Series

Electron Backscattering Diffraction (EBSD) is an important tool for analyzing the crystal grain orientation of a microstructure and can be used to formulate conclusions about microtexture, texture determined from individual grains. This technique has been used to study a 6xxx series aluminum alloy's response to the deformation of the extrusion process. Extrusion is the process by which a billet of material is forced, under high pressure, through a die. The material undergoes a significant decrease in cross sectional area, and is formed into a shape equivalent to the geometry of the die orifice. Different bearing lands are shown in shown in Figure 1. These surfaces form the part, and are designed to control the metal flow making it uniform through the die, thus yielding good mechanical properties. This research was focused on the resultant microstructure. The shaded regions of Figure 2 show the two surface regions where EBSD measurements were taken.

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