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Die stamping

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048150
EISBN: 978-1-62708-235-8
...-wiper springs that fractured were of an old design, but they had been made in a new die. Selected Reference • Fatigue Failures , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 2002 , p 700 – 727 10.31399/asm.hb.v11.a0003544 Visual...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001121
EISBN: 978-1-62708-214-3
... because of a highly stressed condition produced by a sharp corner combined with low toughness from ineffective tempering. It was recommended that 25 other inserts that belonged to the same die be double tempered. Automotive components Die drawing Die stamping Forming dies D2 UNS T30402 Fatigue...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001814
EISBN: 978-1-62708-180-1
... problems. Excessive temperature may be a factor in hot-working die failures, perhaps due to inadequate cooling between operations. Failures have also occurred during assembly—for example, during shrink fitting of one part onto another. Stamp marks, in addition to causing heat-treatment failures, can cause...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0009222
EISBN: 978-1-62708-180-1
... processed in the same way. Unnecessarily sharp corners caused the stamping die in Fig. 1 and the blanking die in Fig. 2 to fail. Liquid quenching of dies with extreme section changes permits large internal stresses to build up into parts. The stresses may crack the tools in quenching ( Fig. 3 ) or...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001391
EISBN: 978-1-62708-215-0
... absence of a ceramic-to-metal bond in this portion of the termination. Termination fracture occurred when die shear forces exceeded the mechanical bond force between the ink and the substrate during die shear testing. During manufacturing, fracture occurred when the resistor assembly was manufactured with...
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
..., internal bursts or chevron cracks, cracks on free surfaces, cracks on die-contacted surfaces Metal-flow-related problems: for example, end grain and poor surface performance; inhomogeneous grain size; shear bands and locally weakened structures; cold shuts, folds, and laps; flow-through defects...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001782
EISBN: 978-1-62708-241-9
... which served as a severe stress concentration and preferential fatigue crack initiation site on the interior surface of the club face plate. The presence of the groove suggested that either the press pressure was excessive or the contacting die surface exhibited excessively sharp ridges. In addition...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001813
EISBN: 978-1-62708-180-1
... the laboratory for inspection and comparison. The grease-wiper springs that fractured were of an old design, but they had been made in a new die. A medium-carbon helical spring was installed in a machine assembly that was welded into its final location. During welding, which was conducted...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001811
EISBN: 978-1-62708-180-1
... very important to failure prevention. Failures have also occurred where names, numbers, and other identification marks are die stamped or imprinted on highly stressed surfaces. Information on the effects of identification marks is provided in the articles “Fatigue Failures” and “Failures of Shafts...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... longitudinal discontinuities in bar or wire stock are caused by imperfections in the drawing die. They are similar to folds and can act as stress raisers during forming processes. Seams have blunt tips. The two sides of a seam do not necessarily match ( Fig. 36 ). Fig. 36 (a) Surface of Ti-6Al-4V bar...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... the surface because of the metal flow during forging. Fig. 25 Light micrographs of two cross-sectional views of a seam found on a closed-die forged pitman arm showing decarburization and internal oxidation. Etched with 2% nital Another common material problem is the presence of...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... for steels. However, if the area to be studied is white or with low contrast, it may be difficult to determine where the nickel plating ends and the surface begins, as shown in Fig. 3 (d). Figure 4 shows an example of ion-nitrided hot work die steel with a brittle white-etching iron nitride surface...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... die-cast aluminum alloy The LCF curve is usually expressed by the Manson-Coffin equation ( Ref 9 , 10 ), which expresses the total strain amplitude as the sum of the elastic and the plastic strain as a function of the number of cycles to crack initiation, N : (Eq 18) ε a = ε ael...
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
... Nitrides in Anti-Galling Property of Die Materials and Surface Coatings , Metal Transfer and Galling in Metallic Systems , Merchant H.D. and Bhansali K.J. , Ed., The Metallurgical Society , Warrendale, PA , 1986 , p 197 – 216 163. Podgornik B. , Vizintin J. , and Hogmark...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003526
EISBN: 978-1-62708-180-1
... may result in premature failure of the joints. Finite element analysis is an ideal design tool for analyzing small integrated circuit-chip packages that come in an ever-changing variety of sizes, shapes, and applications. The chips are complex fabrications of silicon or other type of die material...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
.... Finite-element analysis is an ideal design tool for analyzing small integrated circuit chip packages that come in an ever-changing virgule variety of sizes, shapes, and applications. The chips are complex fabrications of silicon or other type of die material, polymers, and electrically conductive metals...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... 0.5 to 10 kHz, with no load and under full load. Although it was not possible to distinguish between elastic movement and rigid body movement, it was assumed that amplitudes >1 μm (>40 μin.) were due to the latter. The amplitude range was from 4.30 to 10 −4 μm (173 to 0.004 μin.) in die...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.9781627082952
EISBN: 978-1-62708-295-2
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... Microstructural damage due to shearing, blanking, piercing Overheating damage during spring winding Laps and cracks due to shot peening Stress-corrosion cracking due to use of improper die lubricants Grain growth Incomplete phase transformation Quench cracks Decarburization...