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reverse extrusion

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Published: 31 December 2017
Fig. 1 Types of extrusion processes. (a) Direct extrusion. (b) Reverse extrusion. (c) Hydrostatic extrusion. Source: Ref 1 . S. Kalpakjian and S. Schmid, Manufacturing Processes for Engineering Materials , 6th ed., ©2017. Reprinted by permission of Pearson Education, Inc., New York, New York More
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Published: 30 November 2018
Fig. 7 (a) Direct (forward) extrusion, and (b) indirect (reverse) extrusion More
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006385
EISBN: 978-1-62708-192-4
... Abstract This article discusses two basic forms of extrusion: cold and hot. It provides information on three types of extrusion processes, namely, direct extrusion, reverse extrusion, and hydrostatic extrusion. The article also discusses the mechanics, analysis, tooling and die design...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006518
EISBN: 978-1-62708-207-5
... the various product forms in which commonly used wrought aluminum alloys are available. The article also provides design guidelines for aluminum extrusions and discusses various forming methods. aluminum wrought products extrusions forgings forming wrought aluminum alloys ALUMINUM wrought...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004040
EISBN: 978-1-62708-185-6
... employed in open-die work for starting a hole in a forging blank to make a preform. Piercing differs from extrusion, or reverse extrusion, in the relative amount of metal displaced in relation to the total volume. When the volume of metal displaced by the punch is very small in relation to the total volume...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003996
EISBN: 978-1-62708-185-6
... forging, upsetting, roll forging, orbital (rotary) forging, spin forging, mandrel forging, ring rolling, and forward and reverse extrusion. Selection of the optimal forging method for a given forging shape is based on the desired forged shape, the sophistication of the forged-shape design, and cost...
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006904
EISBN: 978-1-62708-392-8
... emerging strategies to further improve bioinks and their crosslinking. Bioprinting Modalities The main bioprinting methods include inkjet, orifice-free, and extrusion bioprinting. Inkjet printing employs piezoelectric crystals or thermally induced pressure pulsations to eject 1 to 100 pL droplets...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009012
EISBN: 978-1-62708-185-6
... with information on some hot torsion application examples. compression hot tension testing hot torsion testing torsion testing workability PROCESS PARAMETERS for commercial hot working processes such as rolling, extrusion, and forging are normally based on prior experience with similar alloys...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004007
EISBN: 978-1-62708-185-6
... into extrusion pressure: work of homogenous deformation, or the minimum work needed to change the shape of the billet into final product; redundant work, because of reversed shearing in the deformation zone; and work against friction at the billet/die interface ( Ref 34 ). As die angle is increased, the billet...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006526
EISBN: 978-1-62708-207-5
... Three basic types of dies for extruding aluminum are shown in Fig 1 . Solid dies are usually the most economical to make. Generally, a cavity is provided in each end so the die can be reversed when one end becomes cracked or worn. Fig. 1 Three types of dies used in the cold extrusion of aluminum...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006580
EISBN: 978-1-62708-290-7
... Abstract Material extrusion systems are the most common types of additive manufacturing systems, also known as three-dimensional (3D) printers. This article focuses on the general 3D printing processes as can be demonstrated and manipulated in desktop printers. The discussion includes details...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006534
EISBN: 978-1-62708-207-5
... deformation work from inhomogeneous flow due to reversed shearing in the deformation zone The types of work are illustrated in the idealized ram displacement versus load curves of Fig. 12 . Zone A involves the work of upsetting and accelerating to the set extrusion speed. Zone B is the work associated...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005456
EISBN: 978-1-62708-196-2
... is handled through the finite-element method. Source: Ref 12 , 20 Example 4: Extrusion The application of the slab method to extrusion has not been as widespread as in plane-strain drawing and flat rolling. This is primarily due to the complexity of deformation in extrusion, with considerable...
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006893
EISBN: 978-1-62708-392-8
... Abstract This article focuses on the pneumatic extrusion-based system for biomaterials. It provides an overview of additive manufacturing (AM) processes, followed by sections covering steps and major approaches for the 3D bioprinting process. Then, the article discusses the types, processes...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003015
EISBN: 978-1-62708-200-6
... Abstract This article describes the extrusion process, which converts soft, plastic material into a particular form using an extruder, or screw conveyer. It discusses the two main types of plastic extruders, twin-screw and single-screw, estimation of extruder capacity, and design and operations...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004004
EISBN: 978-1-62708-185-6
... materials selection nut formers parts formers process sequence design punches reverse forming size drawing surface finish tolerance transfer headers upset diameter ratio upset length ratio upset strain warm heading workability COLD HEADING is a forming process of increasing the cross...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006262
EISBN: 978-1-62708-169-6
... system as 7150-T7751 plate, 7150-T77511 extrusions, 7055-T7751 plate, and 7055-T77511 extrusions, all introduced in approximately 1991 ( Ref 17 , 18 ). These alloys are reported by the manufacturer to perform well in ASTM G34 EXCO (exfoliation-resistance) tests and the alternate immersion SCC-resistance...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004005
EISBN: 978-1-62708-185-6
... Abstract Cold extrusion is a push-through compressive forming process with the starting material (billet/slug) at room temperature. This article provides information on the different types of steels that can be cold extruded. Mechanical presses and hydraulic presses that are specifically...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004037
EISBN: 978-1-62708-185-6
... Abstract Control of grain flow is one of the major advantages of shaping metal parts by rolling, forging, or extrusion. This article shows the effects of anisotropy on mechanical properties. Cylindrical forgings commonly have a straight parting line located in a diametral plane. The alternate...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009006
EISBN: 978-1-62708-185-6
... and a greater likelihood of fracture. (An important exception is carbon steel in the 200–400 °C, or 390–750 °F, range, wherein dynamic aging effects reverse the stress-strain rate relationship.) In extrusion and drawing, on the other hand, these effects are complicated by frictional heating. Moreover...