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Book Chapter
Modeling Sheet Shearing Processes for Process Design
Available to PurchaseSeries: 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...
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 validated finite-element models for analyzing the classes of shearing processes. The article also discusses the use of microstructural characterization with stereology to render three-dimensional volumetric parameters. It concludes with information on the numerical simulation of an edge-shearing process, along with sensitivity studies with respect to process and tool parameters.
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...
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, and the operating parameters are discussed. The article provides information on the applications of rotary shearing. It concludes with a discussion on devices equipped with shearing machines for protecting personnel from the hazards of shear knives, flywheels, gears, and other moving parts.
Book Chapter
Flattening, Leveling, Slitting, and Shearing of Coiled Product
Available to PurchaseSeries: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005103
EISBN: 978-1-62708-186-3
...-to-length is to shear coiled plate, sheet, or strip transversely into flat pieces in specific length before further metal part or component forming. Flattening and Leveling Flattening and leveling are processes used to correct shape defects in coiled sheet, strip, and plate to achieve a required flat...
Abstract
Metal production mills produce flat metal sheet and strip products into coil forms that are subjected to further fabrication for shape correction. This article provides a discussion on the principle of shape correction and describes the role of various fabrication processes in shape correction. These processes include flattening, leveling, slitting, and cut-to-length.
Book Chapter
Selection of Materials for Shearing, Blanking, and Piercing Tools
Available to PurchaseSeries: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005104
EISBN: 978-1-62708-186-3
... Abstract Shearing is a process of cutting flat product with blades, rotary cutters, or with the aid of a blanking or punching die. This article commences with a description of some wear and material factors for tools used to shear flat product, principally sheet. Methods of wear control...
Abstract
Shearing is a process of cutting flat product with blades, rotary cutters, or with the aid of a blanking or punching die. This article commences with a description of some wear and material factors for tools used to shear flat product, principally sheet. Methods of wear control are reviewed in terms of tool materials, coatings and surface treatments, and lubrication. The article discusses tool steels that are used for cold and hot shearing, and rotary slitting. It provides information on the materials used for two main categories of machine knives: circular knives and straight knife cutters. The article also discusses the selection of materials for blanking and piercing dies and provides examples that illustrate the various types of tooling changes for blanking high-carbon steel.
Book Chapter
Shearing of Bars and Bar Sections
Available to PurchaseSeries: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005178
EISBN: 978-1-62708-186-3
... Abstract This article discusses the most important factors required for cutoff methods. It explains the operations of machines used for the punching, shearing, notching, or coping of plates, bars, and structural sections. The article describes the effects of the blade angle and speed...
Abstract
This article discusses the most important factors required for cutoff methods. It explains the operations of machines used for the punching, shearing, notching, or coping of plates, bars, and structural sections. The article describes the effects of the blade angle and speed on the shear blade life. It reviews the design requirements and best practices for the production of blades. The article compares double-cut dies with single-cut dies used for shearing of structural and bar shapes. The shearing of specific forms, such as angle iron and flat stock, is also discussed. The article describes the advantages of hydraulic bar and structural shears. It concludes with information on the principle and construction of impact cutoff machines.
Book Chapter
Principles of Shearing, Blanking, and Piercing
Available to PurchaseSeries: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005116
EISBN: 978-1-62708-186-3
... Abstract Many shearing, blanking, and piercing operations are based on the same underlying principles of shear mechanisms. This article provides information on the various operations associated with die cutting and describes three phases involved in the shear cutting or punching action...
Abstract
Many shearing, blanking, and piercing operations are based on the same underlying principles of shear mechanisms. This article provides information on the various operations associated with die cutting and describes three phases involved in the shear cutting or punching action. These phases include deformation, penetration and fracture. The article also explains the effect of clearance on tool life and force and power requirements. It reviews the forces involved in the punching process and describes the diameter of a hole or blank in relation to material thickness. The limitations of punching are also discussed. The article describes the relationship of the die clearance to stress-strain curves and explains the procedure of interpreting the stress-strain curves. The article concludes with information on the dynamic stripping forces in blanking.
Book Chapter
Shearing, Slitting, and Cutting
Available to PurchaseSeries: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003179
EISBN: 978-1-62708-199-3
... Abstract This article discusses the operating principles, types, and applications of shearing and slitting of different forms of steel, including plates, flat sheets, bars, coiled sheet and strips. In addition, it provides a detailed account of the cutting methods such as oxyfuel gas cutting...
Abstract
This article discusses the operating principles, types, and applications of shearing and slitting of different forms of steel, including plates, flat sheets, bars, coiled sheet and strips. In addition, it provides a detailed account of the cutting methods such as oxyfuel gas cutting, plasma arc cutting, oxygen arc cutting, laser beam cutting, and air carbon arc cutting and gouging, describing their process capabilities, equipment used, operating principles and parameters, and factors affecting their efficiency.
Image
The shearing process. (a) Schematic diagram of a shearing process. (b) Opti...
Available to PurchasePublished: 01 November 2010
Fig. 1 The shearing process. (a) Schematic diagram of a shearing process. (b) Optical micrograph of the cut surface. (c) Schematic of the sheet cut-edge profile
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Image
Pull-down effect in hot shearing, a commonly specified operation for removi...
Available to PurchasePublished: 01 January 1990
Fig. 25 Pull-down effect in hot shearing, a commonly specified operation for removing the draft from forgings. Pull-down effect, which results from the force of the shearing operation, marks the point where shear begins; burr, where shear ends.
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Image
Shearing deformation during hole punching (a); initial indentation by the p...
Available to PurchasePublished: 01 January 2006
Fig. 1 Shearing deformation during hole punching (a); initial indentation by the punch is followed by intense shearing between the punch and die and then fracture for final separation. These stages are manifest in the appearance and surface finish of the hole (b). Source: Ref 1
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Image
Pressworking operations employing shearing principles. (See definitions in ...
Available to PurchasePublished: 01 January 2006
Fig. 1 Pressworking operations employing shearing principles. (See definitions in text.)
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Image
Single-cut flat bar shearing with holddown and no rear support, and with re...
Available to PurchasePublished: 01 January 2006
Fig. 4 Single-cut flat bar shearing with holddown and no rear support, and with rear support
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Image
Schematic illustration of straight-knife shearing. (a) Side view. (b) Rake ...
Available to PurchasePublished: 01 January 2006
Fig. 1 Schematic illustration of straight-knife shearing. (a) Side view. (b) Rake angle
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Image
Published: 01 January 2006
Fig. 3 Squaring arm attachment for positioning long pieces in a shearing machine
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Image
Published: 01 January 2006
Image
Two types of rotary shearing. (a) Conventional arrangement of cutters for p...
Available to PurchasePublished: 01 January 2006
Fig. 6 Two types of rotary shearing. (a) Conventional arrangement of cutters for producing a perpendicular edge. (b) Overlap of cutters for producing a beveled edge
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Image
Conventional arrangement of cutters in a rotary shearing machine, for produ...
Available to PurchasePublished: 01 January 2006
Fig. 1 Conventional arrangement of cutters in a rotary shearing machine, for production of a perpendicular edge
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Image
Schematic of the shearing process. (a) Side view of cut edge. (b) Torn edge...
Available to PurchasePublished: 01 January 2006
Fig. 2 Schematic of the shearing process. (a) Side view of cut edge. (b) Torn edge with less than optimum clearance. (c) Blankholder for fine blanking
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