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Image
Lower die assembly of a quenching machine in the “out” position. Note the s...
Available to PurchasePublished: 01 August 2013
Fig. 5 Lower die assembly of a quenching machine in the “out” position. Note the spring-loaded center expander cone and the individual slotted rings. Courtesy of The Gleason Works, Rochester, NY
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Image
(a) A hot gear placed into position on the lower die assembly is ready for ...
Available to PurchasePublished: 01 August 2013
Fig. 6 (a) A hot gear placed into position on the lower die assembly is ready for press quenching. (b) Lowering the center ram and the upper inner and outer dies to make contact with the part. (c) Starting the timing cycle; the oil flow is initiated into the quenching chamber and around
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Image
Cross section of resistance-heated graphite die assembly built into hydraul...
Available to PurchasePublished: 30 September 2015
Fig. 11 Cross section of resistance-heated graphite die assembly built into hydraulic press. Arrangement provides for telescoping controlled-atmosphere enclosure and double-action hot pressing for steel, nickel alloy, and titanium alloy powders. Source: Ref 12
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Round-stock die assembly for four-post shear, featuring interchangeable bus...
Available to PurchasePublished: 01 January 2006
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Double-cut angle-iron die assembly with side inserts for shearing of T-bars...
Available to PurchasePublished: 01 January 2006
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Published: 01 January 2006
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Typical extrusion die assembly, showing relative positions of components in...
Available to PurchasePublished: 01 December 1998
Fig. 39 Typical extrusion die assembly, showing relative positions of components in a tool carrier
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Book Chapter
Blanking and Piercing
Available to PurchaseSeries: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005117
EISBN: 978-1-62708-186-3
...-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...
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.
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Double-cut tooling assembly with adjustable die for nondistorted shearing o...
Available to PurchasePublished: 01 January 2006
Fig. 17 Double-cut tooling assembly with adjustable die for nondistorted shearing of channels and I-beams
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Image
Assembly rib for which forging die was redesigned to enlarge radius of fill...
Available to PurchasePublished: 01 January 2005
Fig. 13 Assembly rib for which forging die was redesigned to enlarge radius of fillets at flash saddle in order to increase die life. Dimensions given in inches
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Book Chapter
Die Sets
Available to PurchaseSeries: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005114
EISBN: 978-1-62708-186-3
... ASSEMBLY is a complete punch-press tool that is used to produce large numbers of interchangeable stamped parts. It consists of mating pairs of punches and dies, their retention plates, a stripping device, and a subassembly called a die set. When the press is actuated, the mating components are forcibly...
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.
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Schematic diagram illustrating contact of the center expander and the inner...
Available to PurchasePublished: 01 August 2013
Fig. 7 Schematic diagram illustrating contact of the center expander and the inner and outer dies with the part during quenching. The various components labeled in the diagram are (1) machine guard attached to the upper die assembly; (2) outer upper die; (3) inner upper die; (4) component
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Image
Schematic diagram illustrating the contact of the center expander and the i...
Available to PurchasePublished: 01 February 2024
Fig. 35 Schematic diagram illustrating the contact of the center expander and the inner and outer dies with the part during quenching. (1) Machine guard attached to the upper die assembly. (2) Outer upper die. (3) Inner upper die. (4) Component undergoing quench. (5) Lower die assembly. (6
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Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005809
EISBN: 978-1-62708-165-8
... as a reservoir for the quench oil and also supports the lower die assembly, is shown in Fig. 4 . The upright is recessed from the front of the machine base to allow full access to the lower die for placing the components to be quenched on the tooling or for removing them after quenching is completed when...
Abstract
Press quenching is a specialized quenching technique that can be utilized during heat treatment to minimize distortion of complex geometrical components by using specialized tooling for generating concentrated forces that constrain the movement of the component in a carefully controlled manner. This article provides a detailed account of the fundamental components of quenching machines, including the upright machine section, control panel, lower die table, tooling, and the base. In addition, it summarizes the critical factors affecting component distortion during press-quenching.
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(a) Schematic diagram illustrating the mechanism used to control dishing. T...
Available to PurchasePublished: 01 August 2013
Fig. 8 (a) Schematic diagram illustrating the mechanism used to control dishing. This mechanism permits the inner ring of lower die to be raised or lowered (arrow) to compensate for dishing. Source: Ref 3 . (b) Actual lower die assembly showing the dial that controls the mechanism for raising
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Image
Cross section of hydraulically activated, induction-heated graphite die ass...
Available to PurchasePublished: 30 September 2015
Fig. 12 Cross section of hydraulically activated, induction-heated graphite die assembly inside vacuum chamber. Arrangement permits double-action hot pressing of beryllium powder into blocks. Source: Ref 13
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Image
A 635 mm (25 in.) automatic quenching machine manufactured by The Gleason W...
Available to PurchasePublished: 01 February 2024
Fig. 33 A 635 mm (25 in.) automatic quenching machine manufactured by The Gleason Works in Rochester, New York, in the early 1930s. The operator is removing a large spiral bevel gear from the lower die assembly after the quenching operation has been completed. Courtesy of The Gleason Works
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Image
(a) 52100 steel industrial bearing ring is shown positioned on the lower di...
Available to PurchasePublished: 01 June 2024
Fig. 1 (a) 52100 steel industrial bearing ring is shown positioned on the lower die assembly of a quenching machine just prior to oil quenching. (b) Quench crack formed in the raceway of the part during oil quenching. The white arrows identify the circumferential crack that was identified
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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
... of this assembly, plus the fact that a holddown is not required, makes it extremely popular. Fig. 12 Double-cut angle die for cutting various shapes without changeover Square tubing can be cut with little distortion, provided that the wall thickness in proportion to the tube size is great enough...
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: Powder Metallurgy
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006080
EISBN: 978-1-62708-175-7
... muffle furnace. As with other high-temperature processes involving metal powders, a controlled environment must surround the powder material during hot pressing. This atmosphere can be a gas contained in the die cavity, or the gas can surround the entire die assembly inside a chamber. A vacuum can...
Abstract
Successful application of forging and hot pressing involves careful consideration of powder preparation and forming process parameters. This article describes the important process features for powder forging and hot pressing, along with specific applications and materials used.
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