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Book Chapter
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005114
EISBN: 978-1-62708-186-3
... Abstract This article briefly describes the nomenclature, alignment and geometrical considerations, and functional and application requirements of a die set. The die set consists of the shank, guide posts, guide bushings, the punch, and die holders. The article illustrates plate flatness...
Abstract
This article briefly describes the nomenclature, alignment and geometrical considerations, and functional and application requirements of a die set. The die set consists of the shank, guide posts, guide bushings, the punch, and die holders. The article illustrates plate flatness and parallelism in the die set. The testing for abrasion, seizure, and endurance in the die set are discussed briefly. The article concludes with information on die-set recommendations.
Image
Published: 30 November 2018
of homogeneous material with negligible friction between the container and the billet but with significant friction at the surface of the die and its holder. (c) Flow pattern of homogeneous material with significant friction at both the container wall and the surfaces of the die and die holder. (d) Flow pattern
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Image
Published: 01 January 2001
Fig. 2 Schematic of a die and mandrel extrusion setup for producing a single tubular product. Press and die components shown are 1 and 2, container; 3, liner; 4, extrusion die; 5, die backer; 6, die holder; 7, bolster; 8, press body; 9, mandrel; 10, extrusion stem; 11, seal block.
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Image
Published: 01 January 2005
Fig. 6 Longitudinal cross section of a mechanical forging press. 1, Part transfer system; 2, Part feeder; 3, Bolster ejector; 4, Ram ejector; 5, Die holder with top and bottom base plate; 6, Die change system with die change cart. Courtesy of Mueller Weingarten Corp.
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Image
Published: 01 January 1989
Book: Composites
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003429
EISBN: 978-1-62708-195-5
... Corporation for the Boeing 777 aircraft. Fig. 2 Schematic of a die and mandrel extrusion setup for producing a single tubular product. Press and die components shown are 1 and 2, container; 3, liner; 4, extrusion die; 5, die backer; 6, die holder; 7, bolster; 8, press body; 9, mandrel; 10, extrusion...
Abstract
This article discusses the dies, such as shear-face dies, conical-feed dies, and bridge dies, that are used in extrusion of particle-reinforced aluminum composites. It provides an overview of the effects of reinforcements on the properties of aluminum composites.
Book Chapter
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005148
EISBN: 978-1-62708-186-3
... Abstract The selection of material for a drawing die is aimed at the production of the desired quality and quantity of parts with the least possible tooling cost per part. This article discusses the performance of a drawing die. It contains tables that list the lubricants used for deep drawing...
Abstract
The selection of material for a drawing die is aimed at the production of the desired quality and quantity of parts with the least possible tooling cost per part. This article discusses the performance of a drawing die. It contains tables that list the lubricants used for deep drawing, and the typical materials for punches and blank holders. The article describes the typical causes of wear (galling) of deep-drawing tooling. It analyzes the selection of a harder and more wear-resistant material, the application of a surface coating such as chromium plating to the finished tools, and surface treatments such as carburizing or carbonitriding for low-alloy steels or nitriding or physical vapor deposition coating for tool steels.
Book Chapter
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004041
EISBN: 978-1-62708-185-6
... machining spindle speed surface cutting speeds FORGING DIES or inserts are machined from solid blocks or forged die steels. By using standard support components such as die holders and guide pins, which ensure the overall functionality of tooling assembly, the time necessary for manufacturing a die...
Abstract
This article reviews the methods of machining and finishing forging dies. It illustrates different stages in die manufacturing. The article provides a brief description on requirements and characteristics of high-speed machining tools, including feed rates, spindle speed, surface cutting speeds, and high acceleration and deceleration capabilities. It discusses electrodischarge machining process and electrochemical machining process. The article concludes with information on die-making methods.
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003996
EISBN: 978-1-62708-185-6
... into die holder systems to reduce the overall cost of the dies for any given forging. Die holder systems may be universal, covering a wide range of potential die sizes, forging parts, and customers, or the holder(s) may be constructed to handle families or parts of similar overall geometries...
Abstract
This article begins with discussion on forgeability and the factors affecting the forgeability of aluminum and aluminum alloys. It describes the types of forging methods and equipment and reviews critical elements in the overall aluminum forging process: die materials, die design, and die manufacture. The article discusses the critical aspects of various manufacturing elements of aluminum alloy forging, including the preparation of the forging stock, preheating stock, die heating, lubrication, trimming, forming and repair, cleaning, heat treatment, and inspection. It concludes with a discussion on the forging of advanced aluminum materials and aluminum alloy precision forgings.
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006534
EISBN: 978-1-62708-207-5
... of homogeneous material with minimal friction and with plastic deformation localized primarily in a zone just prior to the die. (b) Flow pattern of homogeneous material with negligible friction between the container and the billet but with significant friction at the surface of the die and its holder. (c) Flow...
Abstract
This article describes the direct hot extrusion process and the typical sequence of operations for producing extruded aluminum shapes from soft and medium-grade aluminum alloys, hard alloys, and aluminum-matrix composites. It discusses key process variables, including extrusion speed and exit temperature, and their effect on product quality. The article also provides information on extrusion presses, press dies, and tooling, and addresses quality issues such as surface defects, blistering, and internal cracking. It concludes with a discussion on the drawing of solid section and aluminum tube.
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006493
EISBN: 978-1-62708-207-5
... Abstract This article examines aluminum forging processes, including open-die, closed-die, upset, roll, orbital, spin, and mandrel forging, and compares and contrasts their capabilities and the associated design requirements for forged parts. It discusses the effect of key process variables...
Abstract
This article examines aluminum forging processes, including open-die, closed-die, upset, roll, orbital, spin, and mandrel forging, and compares and contrasts their capabilities and the associated design requirements for forged parts. It discusses the effect of key process variables such as workpiece and die temperature, strain rate, and deformation mode. The article describes the relative forgeability of the ten most widely used aluminum alloys, and reviews common forging equipment, including hammers, mechanical and screw presses, and hydraulic presses. It also discusses postforge operations such as trimming, forming, repairing, cleaning, and heat treatment.
Image
Published: 01 December 1998
Fig. 6 Typical wiredrawing die: schematic cross section (not to scale) of a single-hole wiredrawing die employing a nib of sintered carbide mounted in a circular steel holder
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Book Chapter
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002143
EISBN: 978-1-62708-188-7
... have all cutting sections in rigidly fixed relationship ( Fig. 1 ). They are available in standard sizes to fit various types of holders. Fig. 1 Nonadjustable one-piece solid die for threading Adjustable One-Piece Dies Adjustable one-piece dies are of two types. One type ( Fig. 2...
Abstract
This article discusses the types and operations of the most common machines used for die threading. The construction, types, and comparison of solid and self-opening dies are discussed. The article explains the modification of chasers for threading Monel shaft. The principal factors that influence thread quality, production rate, and cost in die threading are composition and hardness of work metal; accuracy and finish; thread size; obstacles, such as shoulders or steps; speed; lead control; and cutting fluid. The article examines these factors and describes the tools and cutting fluids used for pipe threading along with the severity of stop lines.
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
.... Also called clearance or punch-to- die shoes (punch and die holders), usually sure expands the punch. die clearance. including the guide pins, guide pin bushings, density. Mass per unit volume. Weight per unit and heel blocks. This assembly takes many volume. die closure. A term frequently used to mean...
Abstract
This article is a comprehensive collection of terms related to metalworking operations that produce shapes from forging, extrusion, drawing, and rolling operations.
Image
Published: 01 January 1989
Fig. 14 Mounting for abrasive stones used in fixtured honing. (a) Stone encased in a plastic holder. (b) Stone cemented to a metal die casting
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Book Chapter
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
.... additional motion or pressure for stamping or design of experiments. Methodology for forging operations; actuated by air, oil, rubber, die set. (1) The assembly of the upper and lower choosing a small number of screening springs, or a combination of these. die shoes (punch and die holders), usually...
Abstract
This article is a compilation of definitions of the terms related to sheet metal forming and fabrication.
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006526
EISBN: 978-1-62708-207-5
... alloy parts Holder-and-sleeve dies are used when extrusion pressures are extremely high. This type of die consists of a shrink ring or rings (the holder), a sleeve, and an insert (button). The die sleeve is prestressed in compression in the shrink ring to match the tension stress expected during...
Abstract
Aluminum products such as fasteners and automotive components are often produced by cold extrusion because it facilitates high volume production of near-net-shape parts. This article describes the cold extrusion process for aluminum alloys and the associated requirements for tooling, dies, punches, and other equipment. It covers typical tool materials and their working properties, and provides best practices for sizing aluminum slugs and preparing them for use. The article also discusses the wide range of achievable shapes from shallow cup-like extrusions to deep cups and complex parts with longitudinal flutes, stems, and grooves.
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 Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... be difficult to determine where the nickel plating ends and the surface begins, as shown in Fig. 11(d) . Figure 12 shows an example of ion-nitrided hot work die steel with a brittle white-etching iron nitride surface layer that is quite visible when mounted in Epomet resin but would probably be very hard...
Abstract
This article provides a discussion on the metallographic techniques used for failure analysis, and on fracture examination in materials, with illustrations. It discusses various metallographic specimen preparation techniques, namely, sectioning, mounting, grinding, polishing, and electrolytic polishing. The article also describes the microstructure examination of various materials, with emphasis on failure analysis, and concludes with information on the examination of replicas with light microscopy.
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