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sheet metal forming process

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Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006801
EISBN: 978-1-62708-329-4
.../loose metal, and springback/dimensional. It discusses the processes involved in analytical tools that aid in characterizing the state of a formed part. In addition, information on draw panel analysis and troubleshooting of sheet forming failures is also provided. draw panel analysis fractures...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... and Coating Type on the Galling Properties of Coated Forming Tool Steel , Surf. Coat. Technol. , Vol 184 , 2004 , p 338 – 348 10.1016/j.surfcoat.2003.11.002 71. Hou Y. , Yu Z. , and Li S. , Galling Failure Analysis in Sheet Metal Forming Process , J. Shanghai Jiaotong Univ. (Sci...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001710
EISBN: 978-1-62708-229-7
... ( 1997 ). 3. Metals Handbook , 9th Edition , Metals Park, Ohio : ASM International , Volume 13 , p. 594 – 595 . Selected References Selected References • Forms of Corrosion , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 2002 , p 761 – 795...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
..., and scabs. The article provides a discussion on the imperfections found in steel forgings. The problems encountered in sheet metal forming are also discussed. The article concludes with information on the causes of failure in cold formed parts. anisotropy blisters centerline shrinkage chemical...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001216
EISBN: 978-1-62708-217-4
...Abstract Abstract Countersunk riveted joints in aluminum sheet are widely employed in the aircraft industry. The preparation of the sheet for the riveting process consists either of countersinking where the sheet is sufficiently thick or of dimpling. Metallographic assessment of dimple defects...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001311
EISBN: 978-1-62708-215-0
...Abstract Abstract Several nickel-base superalloy (UNS N06600) welded heat-exchanger tubes used in processing black liquor in a kraft paper mill failed prematurely. Leaking occurred through the tube walls at levels near the bottom tube sheet. The tubes had been installed as replacements for type...
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
... explains the SCC, which occurs due to welding, metalworking process, and stress concentration, including options for investigation and corrective measures. It describes the sources of stresses in service and the effect of composition and metal structure on the susceptibility of SCC. The article provides...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... metal underneath. Once it penetrates the ductile metal, the crack tip is blunted and the propagation ceases. The protective film begins to form on the newly exposed metal surface, and the process begins again. Adsorption-Based Mechanisms When exposed to a specific corrosive environment...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... in metallic materials is by slip or deformation twinning. The microscale brittle fracture mechanism is by cleavage. In metallic materials, slip and twinning deformation processes thus compete with the brittle fracture process of cleavage. All mechanisms may not operate in a given lattice (material...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... or deformation twinning. The microscale brittle fracture mechanism is by cleavage. Thus, in metallic materials, slip and twinning deformation processes compete with the brittle fracture process of cleavage. All mechanisms may not operate in a given lattice (material), and the activation of a given mechanism...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... be inspected immediately before forming and welding and can be rejected if it does not meet quality requirements. Alignment and drilling of tube sheets and tube-support plates to reasonable tolerances will ease tube insertion and will minimize stresses induced during the fabrication of heat exchangers...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001837
EISBN: 978-1-62708-241-9
..., in this case small cracks were detected by radiography and dye penetrant testing in the vicinity of the weld metal after welding. These cracks were not observed during visual inspection. At this stage it was not confirmed that whether cracks were produced during welding or formed after welding and therefore...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001832
EISBN: 978-1-62708-241-9
... would be expected from the residual stress field induced with tube formation. The cold forming of the sheet into tube would induce a residual stress field in which cracks are expected to be parallel to the weld; however, the cracks are perpendicular to the weld. Stresses in this direction could result...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001235
EISBN: 978-1-62708-228-0
... it occurs in aqueous solution according to an electrochemical process described by F. K. Naumann and W. Carius 1 and forms iron sulfide and hydrogen. The hydrogen penetrates the steel and precipitates molecularly at weak points such as inclusions, grain- and phase boundaries at a pressure corresponding...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001047
EISBN: 978-1-62708-214-3
... was performed using scanning electron microscopy and energy-dispersive X-ray spectroscopy. Results indicated that the bulk chemical compositions of the tube sheet conformed to E-Brite and Ferralium, as expected. The weld metal composition was similar to that of Ferralium. Failure resulted from end-grain...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... and cracked nuts. (b) Typical fracture surface. (c) Electron fractograph showing brittle intergranular failure Fig. 17 Five basic types of rivets used to fasten assembled products Fig. 18 Schematic of buckling failure of a thin sheet in a riveted joint. Countersinking the top sheet formed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
...) Depending on fastener design; check with manufacturer. (g) Nickel-plated Asp only. (h) Metallic structure on backside. Source: Ref 1 Specifications Specifications are used to outline fastener requirements, to control the manufacturing process, and to establish functional or performance...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... are covered. discontinuities hot forming ingot casting metalworking defects nonferrous forging steel forging wrought metal products Introduction to Failures Related to Hot Forming Processes Imperfections from the Ingot Imperfections in Wrought Forms Steel Forging Defects Defects...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001272
EISBN: 978-1-62708-215-0
... of the steel at the time of collapse was estimated to be −1 to 4 °C (30 to 40 °F). Material: ASTM A446 grade B or F steel sheet, zinc-coated by the hot-dip process, structural quality Design Code: German: Silo code DIN 1055 E and DIN 1055 F. U.S.: Janssen theory The design and erection of smaller...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003541
EISBN: 978-1-62708-180-1
... strong covalent bonds that form chains, which are also frequently linked by strong primary bonds (i.e., ionic, covalent, and metallic) and/or weaker secondary bonds (i.e., hydrogen and van der Waals). Polymers may also exhibit limited crystallinity, which occurs when the polymer chains arrange...