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Deep drawing

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Published: 01 June 2019
Fig. 2 The photogragh of the deep drawing flaws on the inside of the LPG cylinder. More
Image
Published: 01 June 2019
Fig. 4 The Photogragh of the appearance of the fractured surface.A : deep drawing flaw.B : brittle fractured surface.C : shear lip. More
Image
Published: 01 June 2019
Fig. 11 Diagrams of the deep drawing flaw.d flaw depth for surface flaw c major axis of ellipse.c : major axis of ellipse circumscribing the deep drawing flaw. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001142
EISBN: 978-1-62708-228-0
... Abstract Several newly developed liquid propane gas (LPG) cylinders made from Fe-0.13C-0.42Mn steel failed, each fracturing in the longitudinal direction. One of the cylinders was thoroughly analyzed to determine the cause. Deep-drawing flaws were observed on the inner wall of the cylinder...
Image
Published: 01 June 2019
Fig. 6 SEM fractograph of the fractured surface near the bottom of the deep drawing flaw.A : deep drawing flaw.B : dimples.C : cleavage facets. More
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001298
EISBN: 978-1-62708-215-0
... spar A single corrosion pit, 0.38 mm (0.015 in.) deep, led to a fatigue failure of the spar The failure initiated on the pylon side of the blade. Dimensional analysis of the spar near the failure revealed measurements within engineering drawing tolerances. Though corrosion pitting was present...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001519
EISBN: 978-1-62708-223-5
... an appreciable shear lip, which is characteristic of ductile overload failure (the cone part of the cup-cone fracture). The broken piece had a deep gouge on its side, probably inflicted by the drill bit. Based on these preliminary findings, it was suspected that the draw-in bolt was the first to fracture...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001384
EISBN: 978-1-62708-215-0
... ) displayed an appreciable shear lip, which is characteristic of ductile overload failure (the cone part of a cup-cone fracture). The broken piece contained a deep gouge on its side, probably inflicted by the drill-bit tool end. Fig. 3 SEM fractograph (a) of a field on the fracture surface shown in (b...
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
..., roughening and creations of protrusion rising above the original surface. It often includes material transfer, or plastic flow, or both.” Thus, the wear in metal forming, being also the dominant cause of tool failure ( Ref 51 ) (especially in deep drawing, fine blanking, and sheet metal forming), is often...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001601
EISBN: 978-1-62708-235-8
... instability in cone spinning and concluded that wrinkling on the prespun flange of the cone is caused by relief of the residual compressive stress that arises in the traction-free flange. The cone spinning instability is similar to the wrinkling phenomenon in deep drawing operations. Gur and Tirosh 5...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001380
EISBN: 978-1-62708-215-0
... or coagulation of carbides existed. Cross-sectional samples of material containing machine marks and corrosion pits were also taken. The machine marks were approximately 0.1 to 0.2 mm (0.004 to 0.008 in.) deep while some pits were as much as 0.6 mm (0.025 in.) deep. In addition, the material was free of large...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001168
EISBN: 978-1-62708-219-8
... was covered with rust patches ( Fig. 3 ) under which deep and partially penetrating pitting scars were visible ( Fig. 4 ). From these scars numerous cracks branched out that were predominantly transcrystalline ( Fig. 5 ). Therefore the leaking of the pipes is caused by pitting and stress corrosion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089256
EISBN: 978-1-62708-235-8
... steel containing 0.34% C), as required. The broken-open lap ( Fig. 3 ) revealed a darkened area on the fracture surface that was consistent with the dimensions of the lap. The darkened area extended 0.89 mm (0.035 in.) deep. Adjacent to the darkened area, a small area of bright, fibrous fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001167
EISBN: 978-1-62708-228-0
... separate initiation sites can be distinguished. Also evident in Fig. 4 are numerous corrosion pits, 0.25 mm to 0.125 mm deep — on the inclined face of the groove. Fig. 3 Fracture surface at position A ( Fig. 1 ), illustrating compact oxide scale region within dotted line. Fig. 4 Same...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001706
EISBN: 978-1-62708-217-4
... of the truck beam. Fig. 6 Enlarged view of the corrosion pit shown in Figure 5 . Arrow “A” marks a mottled pigment free surface and arrow “B” marks the corrosion pit. Optical examination of the fracture surface, with the unaided eye, revealed the presence of a deep corrosion pit...
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
.... Grid strain analysis interrupts the normal process flow. Residual oil must be removed from tested blanks, and the grid pattern must be etched onto the surface in a manner that is dark enough to see but not deep enough to affect metal flow. Lubricant must then be reapplied prior to stamping in the same...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047072
EISBN: 978-1-62708-217-4
... the clip to the outer shell exhibited excessive penetration (0.8 mm, or 0.03 in.) of the 1-mm (0.040-in.) thick clip and excessive indentation of the shell; also, a large HAZ (0.25 mm, or 0.01 in., deep) was present at the portion of the weld in the shell. These conditions were the result of spot welding...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001715
EISBN: 978-1-62708-219-8
... found in the prestressed wire. These splits, like those shown in Figures 4 , 5 , ranged in length from less than 1 mm to more than 200 mm in length. The depth of the splits also varied greatly: there were many shallow splits on the wire (much less than 1 mm), and deep splits were common (with depths...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001605
EISBN: 978-1-62708-217-4
... in.) on the 1.5 mm (0.06 in.) thick material. The circumferential precrack extensions varied from 4.5 to 26 mm (0.18 to 1.02 in.). Bells “V4” and “V8” had cracks up to 0.3 mm (0.012 in.) deep on both ends of the slot. The longest partial crack was found on bell “V7” (26 mm, or 1.02 in.). The results...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0092155
EISBN: 978-1-62708-221-1
... of the splines showed no damage, the follower sides of the splines had very shallow, almost imperceptible wear areas that were only about 0.1 mm (0.004 in.) wide, and the drive side of each spline had a gently radiused, concave area of damage approximately 6.4 × 25 mm (0.25 × 1 in.) and 0.13 mm (0.005 in.) deep...