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tool wear

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Published: 30 August 2021
Fig. 1 Cutting tool failure modes. (a) Characteristic wear and fracture surfaces on cutting tools. (b) Catastrophic failure. (c) Typical wear measurements for a turning tool. VB , flank wear More
Image
Published: 30 August 2021
Fig. 43 Die failure caused by severe wear. (a) Die made from air-hardening tool steel that exhibited a crazed and eroded condition. Areas A and B are shown in (b) and (c), respectively. Original magnification of both: 10×. (d) Microstructural examination of area B revealing a layer More
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
... or chatter and miniscule movements that may lead to workpiece rejection and/or failure ( Ref 1 ). Cutting tool chatter and miniscule movements cause accelerated cutting tool wear, which may leave tears, voids, pits, burrs, and irregular and deep lay marks in the surface of machined workpieces. Manufacturing...
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
... by the counterbody ( Ref 3 ). The main factors affecting the severity of adhesive wear as well as its mode or type include ( Ref 27 ): Components and tool design Applied load Contact area and degree of movement Lubricant type and lubrication mode Environment Material properties (i.e...
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
... in heat treatment. In this instance, the precise reason for failure is unknown, but the classification helps to establish a relationship between the various factors and indicates areas of repeated failure. Design Influences Tool Life If tools wear out in normal service, we assume that the design...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001783
EISBN: 978-1-62708-241-9
.... Sverker 21, cold work tool steel. Tool Steel Facts . Uddeholm Company 8. van der Heide E. , Stam E.D. , Giraud H. , Lovato G. , Akdut N. , Clarysse F. , Caenen P. , Heikillä I. : Wear of aluminium bronze in sliding contact with lubricated stainless steel...
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
... in extracting heat from the work piece and avoiding high surface temperatures, thereby reducing thermal gradients and extending the service life of the tooling [ 13 ]. In general, when a zone has a large sliding distance and a high surface-to-volume ratio, it favors causing a severe wear, a high heating...
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
... of the component Tool and die setup: Alignment must be precise to avoid irregular, excessive stresses that will accelerate wear or cause cracking Tool and die operation: Overloading must be avoided to ensure achievement of the desired component life The aforementioned classification of factors...
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
... of the component Tool and die setup: Alignment must be precise to avoid irregular, excessive stresses that will accelerate wear or cause cracking Tool and die operation: Overloading must be avoided to ensure achievement of the desired component life The above classification of factors, while...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006789
EISBN: 978-1-62708-295-2
... and relevant tribosystems Table 1 Wear processes and relevant tribosystems Wear process Examples of relevant tribosystems Sliding wear Sliding bearings; cam and tappets; guides; seals; piston rings; disc-pad braking system; forming dies; cutting tools Fretting wear Riveted joints...
Image
Published: 30 August 2021
Fig. 34 Seal wear ring (inverted) below seal housing. Fretting wear can be seen on the inner cone at the bottom of the stack. The fractured journal was also cleaned in mineral spirits and then cut approximately 25 mm (1 in.) from the fracture surface. This was performed to enable the area More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
... by a cutting tool. In gouging abrasion, the wearing surface is plastically deformed and work hardened by the abrasive forces, so that cutting and tearing of metal occurs on the work-hardened surface. Typical operations that involve gouging abrasion include crushing and primary grinding operations. The wear...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
... stress levels. It involves both cutting and tearing types of wear, in which small chips of metal are removed from the wearing surface by the movement of the sharp points of rock, under considerable pressure, over the wearing surface. This type of action is very similar to machining by a cutting tool...
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
... pressure and ultimately engine failure. Failure of tools used for drilling rock and other media raises cost concerns associated not only with the need for frequent replacement of parts, but also with the down time incurred. Impact wear of printer typefaces will lead to loss of definition and a subsequent...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001269
EISBN: 978-1-62708-215-0
... homogenization of the carbides in the resultant hob, and lower sulfur content. Carbides Coatings Hobbing cutters Microstructural effects Sulfur Wear M2 UNS T11302 Brittle fracture Background A gear manufacturer reported recurring premature failures of titanium nitrided M2 tool steel gear...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
... and safety, reliability, and quality can be greatly reduced. Excessive wear from inlet and exhaust valves impacting their seating faces in automotive engines can lead to loss of cylinder pressure and ultimately engine failure. Failure of tools used for drilling rock and other media raises cost concerns...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0047406
EISBN: 978-1-62708-232-7
... of the tooth surfaces. Contributing factors included uneven loading because of misalignment and stress concentrations in the tooth roots caused by tool marks. Greater strength was provided by oil quenching and tempering the replacement pinions to a hardness of 255 to 302 HRB. Machining of the tooth roots...
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
..., and material, which are discussed in the following sections along with examples. The tools available for failure analysis are then covered. Further, the article describes the categories of mode of failure: distortion or undesired deformation, fracture, corrosion, and wear. It provides information...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006800
EISBN: 978-1-62708-329-4
... the part? Production runs Are the desired production runs consistent with the machines and expected costs? Tooling wear Is tooling wear or maintenance a possible problem that will impact part cost or performance? Weld lines (a) If the process is a flow process, can weld lines be located...