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single-point cutting tools

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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
... in machine tool crashes that destroy the workpiece and damage the machine tool, especially in unattended operations. Cutting tool failure may be managed by removing the cutting tools from the tool holder and measuring flank wear and/or crater wear ( Fig. 1c ) with a toolmaker’s microscope. An end-point...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006754
EISBN: 978-1-62708-295-2
... approaches to failure analysis work. The goal of the proper approach is to allow the most useful and relevant information to be obtained. Readers of the various articles will see many points of view demonstrated. All the valid approaches require planning, defining of objectives, and organization prior to any...
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
... shows simplified, two-dimensional, free-body diagrams illustrating the orientations of the normal-stress and shear-stress systems at any internal point in a shaft loaded in pure tension, torsion, and compression. Also, the single-overload fracture behavior of both ductile and brittle materials...
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
... surfaces under high 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...
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
... 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. In gouging abrasion, the wearing...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003518
EISBN: 978-1-62708-180-1
... of conclusions. To emphasize this important point again, a failure analysis must include an evaluation of the consistency of results from different tests or analytical methods. A single test result does not constitute a legitimate foundation for a failure analysis. Other common pitfalls in failure investigations...
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
... are moved in opposite directions, normal to the fracture plane. Generally, a saw cut can be made from the back of the fractured part to a point near the tip of the crack, using extreme care to avoid actually reaching the tip of the crack. This saw cut will reduce the amount of solid metal that must...
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
... (EDM), which is metallurgically analogous to torch (flame) cutting but on a much smaller scale. The cutting effect is produced by a succession of sparks between the electrode and the workpiece. Each spark heats a small volume of metal to a temperature well above its melting point. Most of the molten...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001459
EISBN: 978-1-62708-234-1
... a single origin [1] at the point indicated by the arrow. It will be noted that the crack front is symmetrical with respect to the origin and that it retains. a concave form throughout, this showing that it has not extended preferentially in the region of the periphery. Both the single origin...
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
...) Electroless nickel plated and mounted Epomet in epoxy resin (resin not in the field of view). All four specimens were prepared in the same holder and were etched with nital. The arrows point to the nitrided surface layer. Fig. 12 Light micrograph of an ion-nitrided H13 tool steel specimen mounted...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001580
EISBN: 978-1-62708-229-7
... a characterization of the variability introduced by the reflectivity of the canister surface. The test was done with the laser pointed at the center of the weld surface. Measurements were taken every 0.01 mm over a range of 0.1 mm. Four segments of the instrument range were tested; the segment ranges are listed...
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
... was not hardened; only the dull gray region was partially hardened. Failures Due to Improper Furnace-Atmosphere Control Other surface-related problems may occasionally be encountered in tool and die failures. Figure 30(a) shows the mottled surface of a moil point, made from AISI W1 (0.80% C) tool steel...
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
...% aqueous nitric acid) of a disk cut behind the fracture revealed that the bore working surface was not hardened; only the dull gray region was partially hardened. Fig. 30 (a) Moil point made of AISI W1 tool steel that exhibited a rough, scaled surface after heat treatment. The actual size...
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
... tool steel specimen mounted in epoxy thermosetting resin. The arrows point to a white-etching iron nitride layer at the surface that probably would not have been observed if the specimen was nickel plated for edge protection. Specimen etched with nital Shrinkage gaps between specimen and mount...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006755
EISBN: 978-1-62708-295-2
... the organization required at the outset of a failure investigation and to provide a methodology with some organizational tools. The main focus is the use of problem-solving tools such as a fault tree analysis combined with critical thinking. The critical point is that time spent in preparation and planning can...
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
.... The point (or points) of contact in this type of gear set constitutes too small an area to carry an appreciable load without destruction of the metal surface. As a result, single-enveloping worm-gear sets are used in applications similar to those for helical gears on crossed shafts: to transmit motion where...
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
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... data is a critical point due to the numerous variables that influence fatigue results. For example, if a series of tests is conducted at a constant stress ratio ( R = S min / S max ), and the alternating stress amplitude ( S a ) is used as the other independent dynamic variable, an S - N curve...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001780
EISBN: 978-1-62708-241-9
... of iron sulfide. This low melting point phase results in hot forming difficulties and ruptures [ 1 ]. The addition of sufficient manganese preferentially converts the sulfur to higher melting point manganese sulfides, which are elongated during hot working because of their high plasticity...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... on the face perpendicular to the x ′-direction are labeled σ x ′ and τ x ′ y ′ . Fig. 4 Stress transformation in two dimensions. (a) Two-dimensional stress at a point with a cut angle θ. (b) Stresses along rotated axes, x ′, y ′. (c) Area values on cut element Static equilibrium can...