Lec7 - Bulk Bulk Processes Extrusion and Extrusion Wire Wire Drawing Lecture 7.b ISE 2204 Introduction to Manufacturing Processes Dr Jaime Camelio

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Bulk Processes Extrusion and Bulk Processes Bulk Processes – Extrusion and Extrusion and Wire Drawing Lecture 7.b ISE 2204 – Introduction to Manufacturing Processes Dr. Jaime Camelio March 5 th , 2009 Manufacturing Processes Bulk Processes Rolling Definitions Slab Analysis Pressure Distribution Different Rolling Processes ISE 2204 – Introduction to Manufacturing Processes – Spring 2009 Outline
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Casting Processes Bulk Deformation Processes Sheet Forming Processes Cutting Processes Additive Processes Joining Processes ISE 2204 – Introduction to Manufacturing Processes – Spring 2009 Manufacturing Processes ISE 2204 – Introduction to Manufacturing Processes – Spring 2009 Bulk Deformation Processes
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Extrusion Definition Different Extrusion Processes Wire Drawing Definition Slab Analysis for Drawing ISE 2204 – Introduction to Manufacturing Processes – Spring 2009 Outline Developed in late 1700s for producing lead pipe A round billet is placed in a chamber and forced through a die opening by a ram Can be done cold or at elevated temperatures Consistent cross-section Consistent cross section ISE 2204 – Introduction to Manufacturing Processes – Spring 2009 Extrusion
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ISE 2204 – Introduction to Manufacturing Processes – Spring 2009 Extruded Products (a)-(c) Examples of extrusions and products made by sectioning them. (d) Examples of extruded cross-sections. Source: Kaiser Aluminum and Plymouth Extruded Shapes. Direct extrusion (a) Indirect extrusion (b) Hydrostatic extrusion (c) Impact extrusion (d) ISE 2204 – Introduction to Manufacturing Processes – Spring 2009 Types of Extrusion
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Direct Extrusion – Bar Example Direct Extrusion – Tube Example ISE 2204 – Introduction to Manufacturing Processes – Spring 2009 Extrusion Process Extrusion Process – Direct Extrusion Direct Extrusion Frequently square dies are used with hot extrusion. In this case dead zone formation takes place, as the metal seeks to move along a path of least resistance. Container Dead zone Die Extrusion When ram reaches this position coring begins Extrusion carried out below the recrystallization temperature is consider cold extrusion.
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This note was uploaded on 02/20/2010 for the course ISE 2204 taught by Professor Rhsturges during the Spring '08 term at Virginia Tech.

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Lec7 - Bulk Bulk Processes Extrusion and Extrusion Wire Wire Drawing Lecture 7.b ISE 2204 Introduction to Manufacturing Processes Dr Jaime Camelio

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