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cutting tool material

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001571
EISBN: 978-1-62708-229-7
... cladding and the A533 Grade B plate material to a depth of about mid-wall. The microstructures of these specimens were compared to that of specimens cut from the Midland, Michigan reactor vessel, made from the same grade and thickness but never placed in service. These specimens were subjected to known...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0065827
EISBN: 978-1-62708-221-1
... in different types of operations. Cutting tools Materials selection Woodworking machinery Fe-0.48C-0.30Mn-0.90Si-8.50Cr-1.35Mo-1.20W-0.30V Fe-0.50C-0.30Mn-0.40Si-5.00Cr-2.00Mo (Other, general, or unspecified) fracture This example describes how a steel research engineer used failure analysis...
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
... on a rail head due to frictional heat. This specimen was taken adjacent to a spalled area. Specimen etched with picral Fig. 9 Light micrographs of the surface (plated with nickel) of quenched and tempered A2 tool steel cut with an abrasive wheel without using coolant showing (a) a reaustenitized...
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
...Abstract Abstract This article describes the characteristics of tools and dies and the causes of their failures. It discusses the failure mechanisms in tool and die materials that are important to nearly all manufacturing processes, but is primarily devoted to failures of tool steels used...
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
... ): V T n = C where V is the cutting speed, T is the tool life, C is a material-dependent constant, and n is a constant that depends on tool material and cutting conditions. Eventually, the sharpness of the bit degrades to a point where edge wear-debris accumulation becomes a problem...
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
... of grooves that do not involve direct material removal. The displaced material forms ridges adjacent to grooves, which may be removed by subsequent passage of abrasive particles. Cutting occurs when material is separated from the surface in the form of primary debris, or microchips, with little...
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
..., with an additive for corrosion protection and lubrication, should be directed uniformly into the cut. Wet cutting produces a smooth surface finish and, most importantly, guards against excessive surface damage caused by overheating. Figure 1 shows the surface of quenched and tempered A2 tool steel (59 HRC) cut...
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
... resulting from lower matrix hardness and high sulfur content of the material, which contributed to lower ductility through increased nucleation sites. It was recommended that the hob manufacturer specify a minimum amount of required reduction for the original bar of tool steel material, to provide...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001583
EISBN: 978-1-62708-217-4
... tools used by the vendors in the each of these areas. Hardness Specification AMS 5629 lists the requirements for the tensile properties of PH 13-8 Mo material heat treated to the H1050 condition. A tensile specimen was fabricated from each of the six retaining rods in order to confirm...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001271
EISBN: 978-1-62708-215-0
.... When a hardened steel tool is struck against a material as hard or harder than itself, conchoidal envelopes (appearing as white bands when viewed in cross section) of impact-induced untempered martensite can form at the striking surface, particularly under the chamfer. This envelope of brittle material...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0089429
EISBN: 978-1-62708-223-5
...; and the cutting edge of the flutes was excessively hard. In his opinion, this high hardness made the edge brittle, so that the edge would chip during drilling. The chips caused the drill to bind and then shatter in a brittle manner because of excessive carbide segregation. Plaintiff alleged defective design...
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
...Abstract Abstract The draw-in bolt and collet from a vertical-spindle milling machine broke during routine cutting of blind recesses after a relatively long service life. The collet ejected at a high rotational speed due to loss of its vertical support and shattered one of its arms upon impact...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001058
EISBN: 978-1-62708-214-3
... by the stagnant water as the line drained. Fig. 3 Top section of plug after break, showing clean fracture surface. 2.2×. Fig. 4 Bottom section of plug after break, showing enlarged mating surface to that in Fig. 3 . Notches in inner diameter were caused by removal tool; cut-out portion removed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
... attachment and film for use in photographing metallographic specimens Equipment and materials for mounting and etching specimens A handheld single-lens reflex 35-mm camera, with macrolenses and film A pocket-size magnifier, and a ruler or scale A hacksaw and blades for cutting specimens...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003520
EISBN: 978-1-62708-180-1
... to confirm the fracture mechanism by observation of the various dimple types, facets, striations, river marks, and so on. In a similar manner, the behavior of the material under the environmental and stress conditions can be evaluated. Macroscopic examination of discs cut from the failed component...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001664
EISBN: 978-1-62708-226-6
... electron microscopy. A section was removed for metallographic examination, on which microhardness measurements were made in order to estimate the strength of the material. For purposes of comparison, a similar examination was made of an unused, unbroken device obtained from the manufacturer of the broken...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001805
EISBN: 978-1-62708-241-9
... surgical procedure and are manufactured from many different types of materials. Engineers vary the physical properties of these materials based on expected service conditions and whether or not the tool is meant to be re-used. As with most medical devices, there are tradeoffs for surgical tools between...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
... on the contour bar show number of cycles to failure) Fig. 21 Fatigue life distribution in the mould; case B boundary conditions (numbers on the contour bar show number of cycles to failure) Material tensile and fatigue testing were performed on specimens cut and machined from an electroformed...
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
...Abstract Abstract Grease-wiper springs for cams formed from stampings of 0.25-mm thick carbon spring steel (0.65 to 0.80% C) fractured at the 0.025 mm radius on the stamped 135 deg corner at a 90 deg bend after 5,000,000 cycles. Tool marks 2 to 2.3 mm from the center of the stamped bend were...
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
... tool marks ( Fig. 14d ); the tool marks had been formed during the spring-winding operation. The other unbroken spring had a relatively smooth-textured surface and no tool marks. The microstructure of the wire in all four springs was normal. Chemical analysis of the material established that its...