Skip Nav Destination
Close Modal
Search Results for
piercing shear
Update search
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
NARROW
Format
Topics
Book Series
Date
Availability
1-20 of 163 Search Results for
piercing shear
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Sort by
Book Chapter
Series: 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 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.
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005104
EISBN: 978-1-62708-186-3
... 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. blanking coatings cold shearing high-carbon steel hot shearing lubrication...
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
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005109
EISBN: 978-1-62708-186-3
... and the use of small and large clearance. It informs that the force needed to pierce a given material depends on the shear strength of the work metal, the peripheral size of the hole or holes to be pierced, stock thickness, and depth of shear on the punch. The article discusses the presses and tools used...
Abstract
This article illustrates the characteristics of pierced holes and summarizes the hole wall quality. Specific guidance in selecting die clearances is provided by considering the types of edges produced with different clearances. The article discusses the effect of tool dulling and the use of small and large clearance. It informs that the force needed to pierce a given material depends on the shear strength of the work metal, the peripheral size of the hole or holes to be pierced, stock thickness, and depth of shear on the punch. The article discusses the presses and tools used in piercing. It illustrates the use of compound dies, progressive dies, and transfer dies; piercing of thick and thin stock and piercing holes at an angle to the surface; special piercing techniques; and shaving of low-carbon steels.
Book Chapter
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005117
EISBN: 978-1-62708-186-3
... countersinking cutting die assembly extruding fine-edge blanking fully developed blanks lancing partially developed blanks piece-and-extrude operation piercing piercing shear piercing tools pointed punch piercing punch assembly rectangular blanks rough blanks sheet-forming slotting stripper...
Abstract
This article begins with a discussion on the fundamentals of cutting. It focuses on blanking and piercing operations in a press tool to form and shape the final part geometry. The types of piercing operations include conventional piercing, piercing with a pointed punch, piece-and-extrude operations, slotting, countersinking, and cutting and lancing of tabs. The article provides information on the punch assembly, the die assembly, and the stripper and discusses the factors considered during piercing operations. It reviews the applications of the four types of blanks used in sheet-forming operations, namely, rectangular blank, rough blank, partially developed blank, and fully developed blank. It concludes with a discussion on the process capabilities, applications, and limitations of fine-edge blanking and piercing.
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005145
EISBN: 978-1-62708-186-3
... techniques for these alloys and provides several examples of these techniques, which include shearing, blanking, piercing, deep drawing, spinning, explosive forming, bending, and expanding/tube forming. age-hardenable alloys bending blanking cobalt alloys cold forming deep drawing explosive...
Abstract
This article tabulates the nominal compositions for nickel and cobalt alloys. It illustrates the comparison of strain-hardening rates of a number of alloys in terms of the increase in hardness with increasing cold reduction. The forming practice for age-hardenable alloys and the lubricants used in the forming processes of nickel and cobalt alloys are also discussed. The article summarizes the modification of tools and dies used for cold forming other metals, as the physical and mechanical properties of nickel and cobalt alloys frequently necessitate it. It discusses forming techniques for these alloys and provides several examples of these techniques, which include shearing, blanking, piercing, deep drawing, spinning, explosive forming, bending, and expanding/tube forming.
Book Chapter
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005180
EISBN: 978-1-62708-186-3
... the average comparable die sets used in conventional presses. Piercing, shearing, and forming units are of simple design and are relatively inexpensive to build. Die details are mostly standard parts and can often be made at the plant where the machine is located. Forming units are fastened to the cam...
Abstract
The multiple-slide machine, sometimes called a four-way, four-slide, or multislide machine, is a somewhat specialized item of stamping equipment, although it is very versatile within a limited area of stamping applications. This article discusses the construction and advantages of multiple-slide machines. It presents comparisons of four-slide operations with press operations based on production speed, tooling cost, tool adjustments, and operating cost. The article reviews some factors to be considered while selecting multiple-slide machines. It summarizes the strip materials commonly used in four-slide production. The article examines the design factors of four-slide parts, including tolerances and finishes. It provides the design recommendations for optimal part quality at maximum production speed. The article also discusses various four-slide cutoff methods.
Book Chapter
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005108
EISBN: 978-1-62708-186-3
... as much compressive loading on the work metal as possible. A part blanked using clearance much greater than normal may exhibit double shear, which is ordinarily evident only with extremely small clearance (see edge types 4 and 5 in Fig. 2 in the article “Piercing of Low-Carbon Steel...
Abstract
This article discusses the production of blanks from low-carbon steel sheet and strip in dies in a mechanical or hydraulic press. It describes the cutting operations that are done by dies in presses to produce blanks. The applications of blanking methods are described with examples. The article reviews the characteristics of blanked edges and explains how to calculate the forces and the work involved in blanking. Factors affecting the processing of blanks are discussed. The article provides information on the selection of work metal form, the effect of work metal thickness on the selection of material for dies and related components, as well as the selection of die type and design. The article illustrates the construction and use of short-run dies and conventional dies. It concludes with information on the shaving and deburring methods for blanking.
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003980
EISBN: 978-1-62708-185-6
... impression to the next in sequence to give the forging a final shape. Each move constitutes a pass. Three or more passes are commonly used to complete the upset, and if flash removal (trimming) is a part of the forging operation, another pass is added. Piercing and shearing passes can also...
Abstract
This article discusses the operation of upset forging machines and selection of the machine size. It describes several types of upsetter heading tools and their materials. The article reviews the cold shearing and hot shearing methods for preparing blanks for hot upset forging. It deals with various upsetting processes: offset upsetting, double-end upsetting, upsetting with sliding dies, upsetting pipe and tubing, and electric upsetting. The article also provides information on hot forging and cold forging.
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009154
EISBN: 978-1-62708-186-3
..., and self-pierce riveting. clinched joints clinching crimping fatigue behavior forming mechanical joining riveting self-pierce riveting MECHANICAL JOINING is a process where two or more components are held together through the use of either an integral feature of components or through...
Abstract
Mechanical joining by forming includes all processes where parts being joined are formed locally and sometimes fully. This article focuses on the types, advantages, disadvantages, and applications of the various mechanical joining methods, namely, riveting, crimping, clinching, and self-pierce riveting.
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006501
EISBN: 978-1-62708-207-5
... designation Material specification Rivet material Ultimate shear strength (a) Rivet material Ultimate shear strength Min Max MPa ksi MPa ksi MPa ksi 5056-H32 165 24 NA 5056-H321 193 28 B SAE QQ-A-430 or ASTM B316 2117-T4 179 26 NA 2117-T3 206 30 AD SAE QQ-A-430...
Abstract
This article compares and contrasts mechanical joining techniques used in the manufacture of aluminum assemblies, including seaming, swaging, flanging, crimping, clinching, dimpling, interference and snap fits, and interlocking joints. It provides basic illustrations of the various methods and summarizes the advantages and disadvantages of each. The article also discusses the use of staples, nails, rivets, and threaded fasteners and provides relevant property and performance data.
Book Chapter
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005119
EISBN: 978-1-62708-186-3
...Abstract Abstract This article discusses the presses, auxiliary equipment, and dies used in the blanking and piercing of commonly used magnetically soft materials, namely, low-carbon electrical steels and oriented and nonoriented silicon electrical steels. It describes the effect of stock...
Abstract
This article discusses the presses, auxiliary equipment, and dies used in the blanking and piercing of commonly used magnetically soft materials, namely, low-carbon electrical steels and oriented and nonoriented silicon electrical steels. It describes the effect of stock thickness and work metal composition and condition on blanking and piercing. The article provides an overview of the influence of burr height on stacking factors and presents a discussion on the lubrication and core plating of electrical steels that ease the process.
Book Chapter
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005118
EISBN: 978-1-62708-186-3
... clearance is allowed, the edges will be ragged. Secondary shearing will take place, adding to the load on the press and the wear on the cutting steels. Excessive clearance will cause the edge of the cut to draw down, leaving a burred edge. Many of the same clearances for piercing operations apply generally...
Abstract
Trimming is the removal of excess metal from a stamped part to allow the part to reach the finished stage or to prepare it for subsequent operations. This article presents an analysis of parts to be trimmed and describes the selection criteria for the different types of trimming dies such as conventional trimming dies and cam trimming dies. It provides information on rough and finish trimming and construction details of trimming dies. The article reviews the selection criteria of presses for a trimming operation. It provides a discussion on the scrap and material handling processes in trimming.
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005139
EISBN: 978-1-62708-186-3
... stainless coils do not seem to chemically react with the stainless surface and have been found to serve as a barrier coating, reducing corrosion potential for coils seeing moisture in transit. Blanking and Piercing The shear strength of stainless steel is approximately twice that of low-carbon steel...
Abstract
This article discusses the selection of types of stainless steel for various methods of forming based on the formability and on the power required for forming. It reviews the requirements of lubrication, blanking, and piercing. The article describes various forming methods, namely, press-brake forming, press forming, multiple-slide forming, deep drawing, spinning, rubber-pad forming, drop hammer forming¸ three-roll forming, contour roll forming, stretch forming, and bending of tubing.
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005141
EISBN: 978-1-62708-186-3
... punch and die. The shear strengths of the commonly used aluminum alloys range from 62 to 338 MPa (9 to 49 ksi), whereas the shear strength of a typical low-carbon steel is 240 to 460 MPa (35 to 67 ksi). Tool Materials A discussion of materials for blanking and piercing dies is given...
Abstract
This article discusses the general formability considerations of aluminum alloys. To conduct a complete analysis of a formed part, the required mechanical properties, as determined by several standard tests, must be considered. The article describes tension testing and other tests designed to simulate various production forming processes, including cup tests and bend tests, which help in determining these properties. It provides information on the equipment and tools, which are used in the forming of aluminum alloys. The article presents a list of lubricants that are most widely used in the forming. It also analyzes the various forming processes of aluminum alloys. The processes include blanking and piercing, bending, press-brake forming, contour roll forming, deep drawing, spinning, stretch forming, rubber-pad forming, warm forming, superplastic forming, explosive forming, electrohydraulic forming, electromagnetic forming, hydraulic forming, shot peening, and drop hammer forming.
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005162
EISBN: 978-1-62708-186-3
... on sheared blanks 220 mm (8 11 16 in.) wide by 464 mm (18 1 4 in.) long. The press-brake operation consisted of piercing five holes in the flange and one in the center and notching one corner ( Fig. 5a ). The other holes and the three other corner notches were produced with three more...
Abstract
This article reviews the selection and formability characteristics of steels, with an emphasis on low-carbon steels and some coverage on the forming of high-carbon steels. It describes the key factors that affect the formability of steels in terms of steelmaking practices, surface finishes, metal thicknesses, and alloying. The article explains the bending and forming operations with some examples. It also describes the formation of various shells, including doubly contoured shells, deep recessed shells, and deep circular shells.
Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
.... On the other hand, lubricants containing sulfur, chlorine, or solid additives such as zinc oxide or lead carbonate can, if not removed from the nickel surface, cause embrittlement of the metal. Shearing, Blanking, and Piercing Oils incorporating sulfur or chlorine-containing additives may be used. Water...
Abstract
This article describes the presses that are mechanically or hydraulically powered and used for producing sheet, strip, and plate from sheet metal. It also presents the JIC standards for presses, compares the presses based on power source, details the selection criteria and provides information on the various drive systems and the auxiliary equipment. It describes the selection of die materials and lubricants for sheet metal forming and provides information on the lubrication mechanisms and selection with a list of lubricant types for forming of specific sheet materials of ferrous or nonferrous metals. The article reviews the various types of forming processes such as blanking, piercing, fine-edge blanking, press bending, press forming, forming by multiple-slide machines, deep drawing, stretch forming, spinning, rubber-pad forming, three-roll forming, contour roll forming, drop hammer forming, explosive forming, electromagnetic forming, and superplastic forming.
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003991
EISBN: 978-1-62708-185-6
..., chipping, or grinding to remove or minimize surface imperfections. However, despite surface conditioning, the product is still likely to contain some surface imperfections. Cutting Semifinished steel products for forging are generally cut to length by hot shearing. Hot sawing or flame cutting may...
Abstract
This article focuses on the forging behavior and practices of carbon and alloy steels. It presents general guidelines for forging in terms of practices, steel selection, forgeability and mechanical properties, heat treatments of steel forgings, die design features, and machining. The article discusses the effect of forging on final component properties and presents special considerations for the design of hot upset forgings.
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001021
EISBN: 978-1-62708-161-0
...-down effect, which results from the force of the shearing operation, marks the point where shear begins; burr, where shear ends. Fig. 26 Allowances (a) and tolerances (b) for hot-pierced holes that are to be broached Fig. 28 Workpiece configurations that emphasize cost-effectiveness...
Abstract
Forgings are classified in various ways, beginning with the general classifications open die and closed die. They are also classified according to how they are made; such as hammer upset forgings, ring-rolled forgings, and multiple-ram press forgings; and in terms of the close-to-finish factor or amount of stock that must be removed to satisfy the dimensional and detail requirements of the finished part. In addition to types and classifications, the article discusses critical design factors and ways to ensure that the resulting forgings measure up to metallurgical, mechanical property, and dimensional accuracy requirements. The responsibility for design verification is vested in material control, which depends on the proper application of drawings, specifications, manufacturing process controls, and quality assurance programs. The article addresses each of these areas as well as related topics; including stress-induced fatigue failure, tolerances, machining allowances; and the fundamentals of hammer and press forgings, hot upset forgings, and hot extrusion forgings.
Book Chapter
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005165
EISBN: 978-1-62708-186-3
.... The stock-feed slide is reciprocated through a system of links from a crank disk keyed to the left-hand camshaft of the machine ( Fig. 1 , M, O, and C). Press Station The die used for piercing, trimming, embossing, and minor forming of the stock is mounted in the press station, which consists...
Abstract
Multiple-slide forming is a process in which the workpiece is progressively formed in a combination of units that can be used in various ways for the automated fabrication of a large variety of simple and intricately shaped parts from coil stock or wire. This article discusses the components of multiple-slide rotary forming machines involved in the blanking and forming of strip stock. It describes a complicated application of the two-level forming, with an example.
Book Chapter
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005177
EISBN: 978-1-62708-186-3
... for contour roll forming. Simple V-bends or more intricate shapes can be formed in a press brake. Operations such as blanking, piercing, lancing, shearing, straightening, embossing, beading, wiring, flattening, corrugating, and flanging can also be carried out in a press brake. Information on press-brake...
Abstract
This article discusses the principles of the press-brake forming process and its applicability with an example. It describes the types of press brakes and examines some considerations, which help in the selection of machine. The article provides information on flattening dies, gooseneck punches, wiping dies, channel dies, arbor-type punches, box-forming dies, curling dies, beading dies, and cam-driven dies, with illustrations. It discusses the tool material selection for various operations. The article explains the procedures used for producing different shapes, including simple boxlike parts, panels, flanged parts, architectural columns, fully closed parts, and semicircular parts. It examines the effect of work metal variables on results in press-brake operations. The article also reviews stock tolerances, design, and condition of machines and tools, which help in obtaining good dimensional accuracy.