Process Window Determination for Thixoextrusion Processes Using a Steel Alloy

Frederik Knauf; René Baadjou; Gerhard Hirt

doi:10.4028/www.scientific.net/SSP.141-143.61

Paper Titles

Investigations on Thermal Influences for Thixoforging and Thixojoining of Steel Components
p.37

Influence of Processing Route on the Properties of Magnesium Alloys
p.43

A Comparison of Deep Drawing and Ironing of Metal Alloy Strip Produced Conventionally and Non-Conventionally via Semi Solid Material Processing
p.49

Forming of Biocompatible Materials in the Semi-Solid State
p.55

Process Window Determination for Thixoextrusion Processes Using a Steel Alloy
p.61

Investigation of Thin Wall Casting Made of Semi-Solid A356 Using Back Extrusion and Die Cast
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Basic Study on Thixo-Co-Extrusion of Multi-Layer Tube with Al/Mg Alloys
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Feasibility of Recycling Aluminum Alloy Scrap by Semisolid Extrusion
p.79

Fabrication of C_sf/Mg Composites Using Extrusion Directly Following Vacuum Infiltration - Part 1: Monitoring and Acquiring of Process Parameters
p.85

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Process Window Determination for Thixoextrusion Processes Using a Steel Alloy

Abstract:

A direct semi-solid bar extrusion process is characterised by inserting a feed stock in a container and extruding through a forming die with a punch. Compared to conventional bar extrusion the use of semi-solid material complicates the process due to the requirement of solidification of the material. To achieve the solidification of the semi-solid bar, different basic tool concepts are presented. With a combination of these concepts experiments were carried out using the steel alloy X210CrW12 to detect the influence of the most influencing parameters press velocity, extrusion channel diameter, length and geometry. Numerical simulations enable a better understanding of the process mechanics like temperature development in the billet and forming die as well as the material flow in the deformation zone.