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conical-die extrusion

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260001
EISBN: 978-1-62708-336-2
..., type of die, billet temperature, billet-container friction condition, and flow stress of the billet material. Figure 10 shows the relationship between butt thickness and the dead-metal zone conical surface. Stopping extrusion at the safe margin zone prevents oxide and other metallic or nonmetallic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980417
EISBN: 978-1-62708-342-3
... of large-diameter tubes. Source: Wieland-Werke AG Fig. 7.68 Tool set of an indirect extrusion press for copper alloys with a loose die holder in front of the die carrier stem, as shown in Fig. 7.10 , with (a) due holder with flat die, and (b) die holder and die with conical inlet. Source...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980059
EISBN: 978-1-62708-342-3
... and without a shell Fig. 3.35 Geometry of the deformation zone in the direct cold extrusion with lubrication without a shell and with a conical die Fig. 3.36 Principal representation of the variation of the axial compressive stress p x and the radial compressive stress p r in direct...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260029
EISBN: 978-1-62708-336-2
... simultaneously right from the start of extrusion. Some of the generated heat remains in the extruded metal, some is transmitted to the container and die, and some even increases the temperature of the part of the billet that is not yet extruded. The process of heat conduction through the billet during extrusion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040007
EISBN: 978-1-62708-300-3
... forging processes, including closed-die forging, extrusion, electrical upsetting, radial forging, hobbing, isothermal forging, open-die forging, orbital forging, and coining. forging processes 2.1 Introduction 2.2 Forging Operation as a System 2.3 Types of Forging Processes References...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980195
EISBN: 978-1-62708-342-3
... on the stem. (Source: Collin) Cored solders are hollow wire filled with flux by a special tool during extrusion as shown in Figures 5.6 and 5.7 . The extrusion tool system needed for the extrusion of hollow wire with flux filling, which includes the die head with the hollow mandrel, the extrusion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230295
EISBN: 978-1-62708-298-3
... °C, or 1830 °F), decreasing rapidly with decreasing temperature; it has reasonable lubricity; it does not stick to tools; and it can be removed from the beryllium by pickling in nitric acid [ Loewenstein 1979 ]. A conical-approach extrusion die ( Fig. 20.18 ), good lubrication, tightly fitting tools...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480225
EISBN: 978-1-62708-318-8
...-Processed Alloys Beta-Processed Alloys Oxygen Contamination Hydrogen Physical Metallurgy Forging Classes of Forgings Extrusion Microstructure and Mechanical Properties Surface Effects of Heating Modeling Summary Open-Die Forgings Closed-Die Forging Hot Die Forging...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040211
EISBN: 978-1-62708-300-3
... friction tool life warm forging 17.1 Introduction 17.2 Cold Forging as a System 17.3 Materials for Cold Forging 17.4 Billet Preparation and Lubrication in Cold Forging of Steel and Aluminum 17.5 Upsetting 17.6 Load Estimation for Flashless Closed-Die Upsetting 17.7 Extrusion 17.8...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260187
EISBN: 978-1-62708-336-2
..., extruded in lubricated conditions to prevent surface defects by reducing friction at the die bearing. Most shapes are produced using shear face or conical dies. Streamlined dies are required for more complex shapes. Extrusion ratios as high as 70 to 1 have been successfully achieved with whisker-reinforced...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060117
EISBN: 978-1-62708-261-7
.... The deformation is accomplished by a combination of tensile and compressive stresses that are created by the pulling force at the exit from the die and by the die configuration ( Fig. 6.16 ). Metal flow during extrusion through a conical die is analogous to drawing, because the metal is forced through the die...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480207
EISBN: 978-1-62708-318-8
... is flat faced with a contoured die opening. To provide parallel metal flow and a reservoir of glass on the die face, the entry to the die opening is conical in shape. The billet exterior becomes the extrusion surface. Therefore, billet surface preparation and billet heating contribute to the quality...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.9781627083164
EISBN: 978-1-62708-316-4
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480243
EISBN: 978-1-62708-318-8
... is maximum for 871 °C (1600 °F). These are accumulated times to include heating times for single or multirange forming, intermediate stress relief, and final stress relief. (b) A = drop hammer; B = hydropress; C = brake; D = spin; E = draw; F = matched die; G = hydroform; H = finish die; I = creep form...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550299
EISBN: 978-1-62708-307-2
... aluminide alloys Method Advantages Disadvantages Isothermal pancake forging Modest workability requirements Large experience base Slow speed/long cycle time Process parameters dictated by die material (e.g., TZM) characteristics Product yield losses Large multistep...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980141
EISBN: 978-1-62708-342-3
... a surface shell from the core. This also requires correspondingly weakened zones. With very small extrusion ratios, conical-shaped transverse cracks can develop because tensile stresses can occur along the billet axis before the die plane. These can result in voids and cracks at the affected areas...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290137
EISBN: 978-1-62708-306-5
... reduction of 82%. Source: Ref 6.5 Coextrusion welding is a solid-state process that produces a weld by heating two or more workpieces to the welding temperature and then forcing them through an extrusion die. The process typically is conducted at elevated temperatures, not only to improve welding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.9781627083003
EISBN: 978-1-62708-300-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.9781627083423
EISBN: 978-1-62708-342-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500289
EISBN: 978-1-62708-317-1
... in Fig. 14.9 . Fig. 14.9 Tog-L-Loc mechanical clinching. Source: Ref 14.16 The Tog-L-Loc process is completed in the following stages: Pressure pad around the punch clamps the material (prevents upward extrusion of metal around punch) Punch draws metal into the die and upsets...