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shear knives

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Published: 01 August 2018
Fig. 15.21 Steel containing C = 0.64% and Mn = 0.82% for shear knives, subjected to controlled rolling. Fine pearlite with little pro-eutectoid ferrite. The accelerated cooling at the end of the rolling process has prevented the formation of pro-eutectoid ferrite (for this manganese content More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310123
EISBN: 978-1-62708-286-0
.... This free-energy differential increases with decreasing temperature. At a certain temperature, the martensite start temperature M s , the transformation occurs spontaneously via the coordinated movement of atoms in a shearing-type mode at very high speeds approaching the speed of sound in the material...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060273
EISBN: 978-1-62708-261-7
... knives: H11, H12 For severe hot-shearing applications: H21, H25 Dies for medium runs: A2, A6, O1 Dies for long runs: D2, D3 Trimming dies (also for hot trimming): A2 Cold and hot shear blades Hot punching and piercing tools Boilermaker tools … Knives for work requiring...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740163
EISBN: 978-1-62708-308-9
... for shearing a metal harder than approximately HRC 30. A sheared edge is smooth along the penetrated portion and relatively rough in the fractured portion. Although sheared edges are not as clean as machined edges, sharp and properly adjusted knives produce sheared edges that are acceptable for a wide range...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610461
EISBN: 978-1-62708-303-4
... scratches occur on this cold-worked surface, then the additional work could result in loss through microfatigue. When the ratio of shear strength of the contact interface relative to the shear strength of the bulk rises to a high enough level (from 0.5 to 1.0), it has been found that a wedge can develop...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240411
EISBN: 978-1-62708-251-8
...–5.50 1.25–1.75 1.30–1.80 … 0.80–1.40 A10 T30110 1.25–1.50 1.60–2.10 1.00–1.50 0.90–1.20 1.55–2.05 1.25–1.75 … … Source: Ref 1 Typical applications for group A steels include shear knives, punches, blanking and trimming dies, forming dies, and coining dies. The inherent...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290243
EISBN: 978-1-62708-306-5
... transfer efficiency depends on the joint design, the adhesive characteristics, and the adhesive/substrate interface. To transfer loads effectively through the adhesive, the substrates (or adherends) are overlapped so that the adhesive is loaded in shear . Typical joint designs are shown in Fig. 9.4...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870235
EISBN: 978-1-62708-314-0
... is present at the crack tip while it is under stress, the wedge test is more severe than the lap shear test, in which moisture must diffuse into the bondline from the edges of the specimen. When the test specimens are subjected to moisture, the oxide surface adsorbs water from the adhesive and subsequently...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440191
EISBN: 978-1-62708-262-4
... the compositions of S1 and S5, as shown in Table 1 . However, they are both intended for similar applications—applications that require extreme toughness such as punches, shear knives, and air-operated chisels. These steels have sufficient hardenability so that full hardness can be attained by oil quenching...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400233
EISBN: 978-1-62708-316-4
..., commonly formed for rein- forcement. (2) Stationary platen of a press to which the lower die assembly is attached. (3) Stationary part of the shear frame that sup- ports the material being sheared and the fixed blade. beaded flange A flange reinforced by a low ridge, used mostly around a hole. bellmouth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.9781627083164
EISBN: 978-1-62708-316-4
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170210
EISBN: 978-1-62708-297-6
.... As a result, A10 has much better machinability in the annealed condition, and somewhat better resistance to galling and seizing in the fully hardened condition, than other group A tool steels. Typical applications for group A tool steels include shear knives, punches, blanking and trimming dies, forming...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290009
EISBN: 978-1-62708-319-5
... agitation. Generally, agglomerates are particle clusters bonded with relatively weak forces, so shear is effective in breaking the agglomerate apart. On the other hand, aggregates are strongly bonded clusters and fail to fracture except during intense milling. Aggregates are avoided if possible...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220519
EISBN: 978-1-62708-259-4
... and pearlite. Some acicular ferrite. Etchant: nital 2%. Courtesy of ArcelorMittal Tubarão, ES, Brazil. Fig. 15.21 Steel containing C = 0.64% and Mn = 0.82% for shear knives, subjected to controlled rolling. Fine pearlite with little pro-eutectoid ferrite. The accelerated cooling at the end...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870255
EISBN: 978-1-62708-314-0
..., because it is an extremely lightweight type of construction that exhibits high stiffness and high strength-to-weight ratios. The basic concept of a sandwich panel is that the facings carry the bending loads (tension and compression), while the interior sandwich or core carries the shear loads, much like...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630169
EISBN: 978-1-62708-270-9
... problem ( Ref 2 ). In cutting tools, such as various types of knives, blades, and the like, increasing the hardness may indeed make the cutting tool more resistant to dulling of the sharp edge. However, increasing the hardness also increases the chance of brittle fracture of the cutting tool itself...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.9781627084598
EISBN: 978-1-62708-459-8
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.9781627083003
EISBN: 978-1-62708-300-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780259
EISBN: 978-1-62708-281-5
... mechanisms. The two most important friction-generating mechanisms for polymeric materials are surface adhesion and mechanical deformation. Figure 1 shows a polymer surface in contact with a hard asperity. Two friction dissipation zones are shown. The interfacial shear zone is a very thin layer...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390039
EISBN: 978-1-62708-459-8
... smooth surfaces, and this in itself may sufficiently reduce the thickness of protective lubricants at some locations to allow junction formation. Experiments have shown that shearing takes place in a direction slightly inclined to the surface ( Fig. 4.1 ), creating wedges or prows of workpiece material...