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straight-knife shearing defects

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Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005102
EISBN: 978-1-62708-186-3
... Abstract Shearing is a method for cutting a material piece into smaller pieces using a shear knife to force the material past an opposition shear knife in a progression form. This article describes the principles, attributes, and defects of straight-knife shearing. The equipment, materials used...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003179
EISBN: 978-1-62708-199-3
... for producing circular or other contoured shapes from sheet or plate. Straight-Knife Shearing In straight-knife shearing, the work metal is placed between a stationary lower knife (or blade) and a movable upper knife. As the upper knife is forced down, the work metal is penetrated to a specific portion...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005103
EISBN: 978-1-62708-186-3
... be used in cutting plate or sheet to a required length. However, cut-to-length lines are normally referred to the coil process lines using shearing or knife cutting. This section discusses only cut-to-length lines using straight knife shearing. Nevertheless, some fundamentals of line configurations in cut...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003178
EISBN: 978-1-62708-199-3
... with a fixed plug ( Fig. 3 ) is widely known and used for drawing large-to-medium diameter straight tubes. The plug, when pushed into the deformation zone, is pulled forward by the frictional force created by the sliding movement of the deforming tube. Therefore, the plug must be held in the correct position...
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
... failure mode will be shear. The fractured area appears to be highly glazed, and the direction of the fracture will be from straight across the tooth to a convex shape. For example, a loaded gear and pinion set were operating at a high rate of speed when the pinion stopped instantaneously ( Fig. 32...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005528
EISBN: 978-1-62708-197-9
... Abstract This article discusses a set of experimental and computational studies aimed at understanding the effect of various processing parameters on the extent of burr and other defect formation during sheet edge-shearing and slitting processes. It describes the development of experimentally...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003427
EISBN: 978-1-62708-195-5
...; this resulted in 130┬░, as shown in Fig. 5 . As the distance between the centroids becomes greater, however, the reaction loads go up in value, as demonstrated in Fig. 6 . Therefore, the 130┬░ is limited to thin laminates as shown in Fig. 7 where a standard shear head would cause a knife-edge condition...
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
... bursts or chevron cracks, cracks on free surfaces, cracks on die-contacted surfaces Metal-flow-related problems: for example, end grain and poor surface performance; inhomogeneous grain size; shear bands and locally weakened structures; cold shuts, folds, and laps; flow-through defects Control...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006471
EISBN: 978-1-62708-190-0
... into the testpiece using either a straight-beam (longitudinal-wave) technique or one of the various angle-beam techniques, such as shear, combined longitudinal and shear, or Lamb wave. Immersion-type search units basically are straight-beam units and can be used for either straight-beam or angle-beam inspection...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.9781627081856
EISBN: 978-1-62708-185-6
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004031
EISBN: 978-1-62708-185-6
.... into a at roll to ensure coil tracking during development of defects such as cavities, core rod. See mandrel. rolling of cold (and hot) rolled sheet and strip. cracks, shear bands, and so on that may cul- coring. (1) A central cavity at the butt end of a crystal. A solid composed of atoms, ions, or minate...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005454
EISBN: 978-1-62708-196-2
... shell or box shape whose walls were which the axis is perpendicular to the rolling and can increase die life. previously straight. direction of the sheet. bloom. A semifinished hot rolled product, rectangular in cross section, produced on a bulk forming. Forming processes, such as bend or twist (defect...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005155
EISBN: 978-1-62708-186-3
... plate or direction of the sheet. blanking. The operation of punching, cutting, or block, sometimes called a die block, secured bend or twist (defect). Distortion similar to shearing a piece out of stock to a pre- to the top of the bed of a press onto which a die warpage generally caused during forging...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.9781627081863
EISBN: 978-1-62708-186-3
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.9781627081979
EISBN: 978-1-62708-197-9
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005543
EISBN: 978-1-62708-197-9
... to a spherical shape) bend; when across the width, it is termed tematic effect and prevent it from obscuring or of expanding the outer walls of any shell or twist. When bend or twist exceeds tolerances, the main effects. Adapted from Ref 1 box shape whose walls were previously straight. it is considered a defect...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003468
EISBN: 978-1-62708-195-5
... fractured across its vertical equatorial plane, perpendicular to the applied load. (b) Initiation of a fatigue microcrack from a large pore in Comral-85 Fatigue crack initiation typically occurs at or near the surface of a material ( Ref 10 , 11 ), regardless of the nature of the initiating defect...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003489
EISBN: 978-1-62708-195-5
.... Fig. 6 Adhesive shear stress distribution for skin-doubler specimen. E , tensile modulus of adherends; G , shear modulus of adhesive. Source: Ref 2 Fig. 7 Some general properties of adhesives relative to shear stress and strain. LL , end of straight line region; KN , maximum rate...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.9781627081962
EISBN: 978-1-62708-196-2
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005161
EISBN: 978-1-62708-186-3
... dies. The U-die is often referred to as a channel die. The spread of shear forces in a cutting die is equal to the clearance, which is usually approximately 10% of the sheet-metal thickness. The larger spread of bending forces is accomplished by using a clearance equal to the sheet metal thickness plus...