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fine-edge blanking

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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
... origins. Each one of these fronts produces a crack that is triangular in outline and is without fine detail due to sliding of the opposing surfaces during the later stages of fracture. This occurs when the fracture plane changes to an angle with the wire axis in response to the torsional strain...
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
... in another location, it has to do so because the local stress (residual and/or applied) was higher than along the centerline, although there may be exceptions. Some exceptions include the random distribution of fine quench cracks in steels at locations where martensite formed after quenching or the cracking...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006818
EISBN: 978-1-62708-329-4
.... The knives failed by spalling of the gripping edge after normal service life. Fig. 45 Typical example of freshly formed martensite at the tip of a failed shear blade. The hardness was 59 to 60 HRC. Etched with 3% nital. Original magnification: 50× Fig. 46 Macroetched (10% aqueous nitric...
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
... tool steel die that cracked during oil quenching. The die face contained numerous fine cracks. The left side of the die broke off during quenching. Figure 2(b) shows both sides of the fracture. Temper color (arrow), typical of the 205 °C (400 °F) temper used, is apparent. This indicates the depth...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001022
EISBN: 978-1-62708-214-3
... was somewhat nonuniform, but in general, was fine and equiaxed ( Fig. 12 ). This may have been due to more complete recrystallization of the alloy as a result of work introduced during forging. Whatever the cause, the effect would, if anything, be beneficial in that it would tend to reduce the anisotropy...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
... of internal gear and mating pinion Rack A rack is a gear whose teeth lie in a straight line (pitch circle of infinite radius). The teeth may be at right angles to the edge of the rack and mesh with a spur gear ( Fig. 1b ) or may be at some other angle and engage a helical gear ( Fig. 2b ). Bevel...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001848
EISBN: 978-1-62708-241-9
..., and the logos of the valve are not completely formed. Wear mechanisms did not fully develop on the surface of the valve. However, there was evidence of abrasive wear and die adhesion on the edge of the valve, which was characterized by fine score marks and a flaky surface morphology, Fig. 13b...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006826
EISBN: 978-1-62708-329-4
... on the cutting tool; refinement of the primary proeutectic silicon by producing finely dispersed silicon grains through powder metallurgical processing can improve machinability ( Ref 22 ). These alloys must generally be machined with turning speed limitations, coolant, and carbide to avoid excessive cutting...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001724
EISBN: 978-1-62708-234-1
... of the hardened skin on the surfaces of these holes could be removed by “carefully grinding at least 0.04 in. from the bore and subsequently honing to a very fine finish”, the bells undoubtedly will be safer if they contain no holes. Despite the circumstance, therefore, that ventilated bells had given completely...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
... similar to those produced by stress corrosion of steel were observed. These cracks had apparently propagated between the inclusions in the steel. Scale was observed over most of the crack path, even down to the fine tip of the crack. The scale provided stress raisers in two ways. First, the volume...
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
... crankshafts revealed indications of fatigue failure; however, the origins were not readily visible ( Fig. 28b ). The surfaces had a clean fine-grained structure, but the edges were peened—evidently the result of damage after fracture. The surfaces of the cheeks at the parting line contained rough grooves...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... ksi). The microstructure of the steel was fine, dispersed, tempered martensite with elongated stringers of manganese sulfide. Also present were spheroidized white particles that were identified as high-alloy complex carbides (M 6 C) corresponding to the double carbides Fe 4 Mo 2 C and Fe 4 Cr 2 C...
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
... in the 1980s, when vat polymerization and stereolithography were used in making solid objects by successively “printing” thin layers of a curable material. Another early type of AM technology in the 1990s was the use of ink-jetting technology in developing AM machines to deposit a fine particle stream...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... to allow the carbide formation to become fine and uniform ( Ref 26 ). Because part manufacture, such as gear production, often requires machining, the condition of the steel that is going to be machined is critically important. Some workers have recommended that normalized and subcritical annealed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... blowholes B 122 (a) Exposed cavities, in re-entrant angles of the casting, often extending deeply within Corner blowholes, draws B 123 Fine porosity (cavities) at the casting surface, appearing over more or less extended areas Surface pinholes B 124 (a) Small, narrow cavities...
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
... environments at tensile stresses well below the yield strength of the metal. The failures often take the form of fine cracks that penetrate deeply into the metal, with little or no evidence of corrosion on the nearby surface or distortion of the surrounding structure. Therefore during casual inspection...
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
... , NASA , 1983 30. Gopinath K. and Mayuram M.M. , “ Gear Failure ,” https://www.coursehero.com/file/15215391/2-8/ , accessed Jan 10, 2019 31. “ Gears and Scuffing Wear Review ,” Engineers Edge , https://www.engineersedge.com/gears/gear_scuffing_wear.htm , 32. Wojciechowski...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4
... path, even down to the fine tip of the crack. The scale provided stress raisers in two ways. First, the volume of the oxide exceeded that of the steel it replaced, placing the metal at the crack tip in tension and promoting a stress-corrosion reaction. Second, the effect of the oxide was magnified...
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
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
... creation. Figure 7 is another example of tongues created in an Fe-3.25%Si alloy. Visible in the optical fractograph are tongues, river lines, and traces of two {1,1,2} family K 1 planes. Fig. 5 Tongues on an iron fracture surface. Some additional secondary fine-scale cracking adjacent...