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extrusion deposition

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Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
... Abstract This article discusses technologies focused on processing plastic materials or producing direct tools used in plastics processing. The article focuses on extrusion and injection molding, covering applications, materials and their properties, equipment, processing details, part design...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006402
EISBN: 978-1-62708-217-4
... appearance. (b) SEM of the panel surface showing cracked anodized coating. 160x. (c) SEM showing the anodized coating flaking away and corrosion deposit under the coating. 85x. (d) Cross section of corrosion site on panel showing depth of intergranular attack. 265x During processing, the extrusions...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001691
EISBN: 978-1-62708-234-1
... subsequently remedied after considerable investigations. Extrusions Synchroton radiation Vacuum chambers Water connections 3003 UNS A93003 6061 UNS A96061 Pitting corrosion Introduction The storage ring vacuum chamber is fabricated from 6061 aluminum ( Fig. 1 ). The water cooling holes...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006913
EISBN: 978-1-62708-395-9
... resistance or conductance is always involved in the measurement. The measured value is largely a property of the contamination that is present on the specimen at the time. However, the dielectric constant of the specimen influences the deposition of contaminants, and its surface characteristics affect...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006867
EISBN: 978-1-62708-395-9
... mechanism from highly ductile to macroscopically brittle. Fig. 1 Effect of environmental stress cracking agents on creep rupture performance One condition in which the possibility of ESC should be considered is when there is an apparent stain or other deposit residue on the surface...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003550
EISBN: 978-1-62708-180-1
... to macroscopically brittle. Fig. 1 Effect of environmental stress cracking agents on creep rupture performance One condition in which the possibility of ESC should be considered is when there is an apparent stain or other deposit residue on the surface of a fractured part. Even though stress cracking...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... Directed-energy deposition Material extrusion Binder jetting Sheet lamination Since approximately 2010, AM technology has transitioned from a relatively obscure collection of processes into an important engineering tool with active engineering developments ( Ref 3 – 5 ) for a wide range...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.9781627083959
EISBN: 978-1-62708-395-9
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003568
EISBN: 978-1-62708-180-1
... been attributed to a number of mechanisms, including cutting ( Ref 45 , 50 , 51 , 52 , 53 , 54 ), fragmentation ( Ref 55 ), elastic and elastic-plastic fracture ( Ref 56 , 57 , 58 ), extrusion ( Ref 59 , 60 ), fatigue ( Ref 61 , 62 ), delamination ( Ref 63 , 64 ), deformation localization...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001812
EISBN: 978-1-62708-241-9
... Cu from electrical resistance-heating contacts Deposition from aqueous environments after corrosion/erosioncorrosion of embrittling metals, e.g. Cu, Pb Airborne ZnS (near mining facilities) reduced to Zn on hot surfaces The most common embrittling metals for some structural alloys...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... failures. Welding Prevention of SCC failures through proper weld procedures may include appropriate weld preheat, interpass temperature, and postweld heat treatment. For example, Fig. 6 is a micrograph of intergranular SCC in the heat-affected zone (HAZ) of an ER308 stainless steel weld deposit...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006808
EISBN: 978-1-62708-329-4
... is most often associated with steels, but the presence of sufficient hydrogen can lead to cracking or embrittlement in other materials ( Ref 9 ). Four types commonly occur in the fusion zone (i.e., weld deposit): transverse, longitudinal, crater, and hat cracks. Base metal cracks can be divided into six...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006795
EISBN: 978-1-62708-295-2
... fracture ( Ref 62 – 64 ), extrusion ( Ref 65 , 66 ), fatigue ( Ref 67 , 68 ), delamination ( Ref 69 , 70 ), deformation localization ( Ref 52 , 60 , 71 , 72 ), and melting ( Ref 43 , 65 , 71 ). An even greater number of analytical models have been proposed ( Ref 73 , 74 ), but none have been...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
... against a smooth metal surface, friction is high in the beginning but drops to a lower value after some sliding. Because of the presence of frictional stress and heat, the PTFE molecular chains are oriented in the direction of sliding and a transfer film is deposited onto the counterface. The molecular...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006942
EISBN: 978-1-62708-395-9
... and its effect on material flow, knit line location, fiber alignment, or material integrity can also lead to premature or unintentional failure. For example, during the extrusion process, the polymer molecules are naturally aligned in the extrusion direction, creating an end product that is stronger...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006927
EISBN: 978-1-62708-395-9
... operations, to allow a single set-up for completion of the part. Profile Extrusions One of the most efficient plastic processes, profile extrusion, is commonly used in applications ranging from automotive or medical uses to exterior architectural uses and many more applications. It is a high-pressure...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006850
EISBN: 978-1-62708-395-9
... and a transfer film is deposited onto the counterface. The molecular orientation in PTFE is responsible for the drop in the friction coefficient. Although the friction coefficient is low for PTFE, wear is generally high because of the thermal softening of the interface zone and easy removal of the material...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003565
EISBN: 978-1-62708-180-1
... in the delamination of platelike debris. Fig. 14 Diagram of the stages of delamination caused by repeated impact on a ceramic surface. Stage 1 fracturing on the surface and crushing of debris; stage 2, extrusion of pulverized debris in interstices and compaction of a fine grained film; stage 3, nucleation...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
... and are even more likely to occur during extrusion operations. (These are called bursts in forgings.) The severe stresses that build up internally cause transverse subsurface cracks. Fig. 6 Seam in an induction-hardened 1151 steel shaft. (a) Unetched. Original magnification: 65×. (b) 1% nital etch...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
.... Investigation The pump and the filter chamber were found to be dry and free of any debris or contamination, except for some accumulated deposit on the filter cartridge, when the pump was disassembled in the laboratory. The driveshaft splines that engaged the impeller were almost completely destroyed down...