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extrusion defects

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Published: 31 December 2017
Fig. 8 Common extrusion defects. Source: Ref 7 More
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Published: 30 November 2018
Fig. 30 Types of aluminum extrusion defects. Source: Ref 16 More
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Published: 31 December 2017
Fig. 9 Examples of defects in extrusion. (a) Chevron cracking in round steel bars during extrusion. Unless the part is inspected, such internal detects may remain undetected and possibly cause failure of the part in service. (b) Deformation zone in extrusion, showing rigid and plastic zones 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
... of extrusion as well as thermodynamics. The finite-element method suitable for simulation of metal forming processes is explained. The article examines the extrusion defects that are divided into three different categories including surface, subsurface, and internal type. It includes information on friction...
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
... and exit temperature, and their effect on product quality. The article also provides information on extrusion presses, press dies, and tooling, and addresses quality issues such as surface defects, blistering, and internal cracking. It concludes with a discussion on the drawing of solid section...
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Published: 15 May 2022
Fig. 43 SEM fractographs of a polyvinyl chloride specimen fractured by impact at ambient temperature, showing the presence of an extrusion defect. (a) Original magnification: 500×. (b) Original magnification: 1500× More
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Published: 01 January 2005
Fig. 37 Extrusion-type defect in centrally located rib (top), and die-design modification used to avoid defect (bottom). w , width; h , height; t , thickness. Source: Ref 2 More
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Published: 01 January 2005
Fig. 37 Pressure valve extrusion showing pipe-type defect in the center More
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Published: 01 January 2002
Fig. 22 Extrusion-type defect in (a) centrally located rib and (b) die-design modification used to avoid defect More
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Published: 01 November 2010
Fig. 37 Pressure valve extrusion showing pipe-type defect in the center More
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
... Abstract Workability is the ability of the workpiece metal to undergo extrusion or drawing without fracture or defect development. This article describes the limits of workability in extrusion and drawing in terms of fracture and flaw development and presents some comments on fracture...
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
... extrusion, chill-roll film extrusion, pipe or tube extrusion, wire and cable coverings, extrusion coating, and profile extrusion, and provides some discussion on multiple-screw extruders. The article describes the dimensional accuracy of extrusion products, and lists common defects that occur frequently...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004006
EISBN: 978-1-62708-185-6
... into the extruded product, because defects can result. Nevertheless, this process has the ability to produce very complex sections with excellent surface finishes and low dimensional tolerances. Flat-face (shear-face) dies and hollow dies with flat shear faces are typically used in nonlubricated hot extrusion...
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Published: 01 June 2012
Fig. 8 Scanning electron microscopy images of the inside surface of a blow-molded nylon balloon showing an elliptical-shaped defect oriented with the long axis parallel to the extrusion direction. Lighter arrows point to a particulate contaminant embedded in the surface of the defect. Courtesy More
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009004
EISBN: 978-1-62708-185-6
... of stress and strain states in various regions of workpieces suggests a convenient method of classifying cracking defects. Figures 2 , 3 , 4 in this article illustrate the locations at which free surface cracks occur in forging and rolling, as well as at the nose ends of billets in extrusion or rolling...
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Published: 01 January 2005
Fig. 69 Use of finite-element modeling software to predict the formation of a suck-in defect in extrusion. Source: Ref 74 More
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Published: 01 December 2009
Fig. 17 Use of finite-element modeling software to predict the formation of a suck-in defect in extrusion. Source: Ref 74 More
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Published: 01 December 2009
Fig. 1 Sketches of processing defects form a basis for early models. (a) Forging or compression test specimen. (b) Extrusion. (c) Drawing. (d) Forging with no horizontal constraint at die surface Source: Ref 1 More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
... pressing, cold isostatic pressing, slip casting, tape casting, roll compaction, extrusion, and injection molding. It describes the advantages, equipment and tooling, and material requirements of green machining, the machining of ceramics in an unfired state with the intent of producing parts as close...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006968
EISBN: 978-1-62708-439-0
... Abstract Additive manufacturing (AM) is a revolutionary technology that fabricates parts layerwise and provides many advantages. This article discusses polymer AM processes such as material extrusion, vat photopolymerization (VPP), powder-bed fusion (PBF), binder jetting (BJ), material jetting...