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Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003973
EISBN: 978-1-62708-185-6
... Abstract Hammers and high-energy-rate forging machines are classified as energy-restricted machines as they deform the workpiece by the kinetic energy of the hammer ram. This article provides information on gravity-drop hammers, power-drop hammers, die forger hammers, counterblow hammers...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003979
EISBN: 978-1-62708-185-6
... close-tolerance forgings conventional forgings friction hammers heating equipment lubrication presses shape complexity trimming CLOSED-DIE FORGING, or impression-die forging, is the shaping of hot metal completely within the walls or cavities of two dies that come together to enclose...
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Published: 01 January 2005
Fig. 1 Principles of various types of gravity-drop hammers More
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Published: 01 January 2005
Fig. 4 Principles of operation of two types of counter-blow hammers More
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Published: 01 December 1998
Fig. 17 Production of six blocker-type forgings with loose tooling in hammers. Dimensions are in inches. More
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005128
EISBN: 978-1-62708-186-3
... Abstract This article discusses the advantages and limitations of drop hammer forming and presents the key factors for determining a process plan. It describes the characteristics of hammers and presents information on tool materials. It explains the use of lubricants and preparation of blanks...
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Published: 01 January 2006
Fig. 2 Schematic of an air-actuated power-drop hammer equipped for drop hammer forming More
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Published: 01 December 1998
Fig. 43 Air-actuated power drop hammer equipped for drop hammer forming More
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Published: 01 January 2006
Fig. 20 Drop hammer forming showing oven next to the drop hammer More
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Published: 30 November 2018
Fig. 3 Swing-hammer shredder, also called a hammer mill. Source: Ref 4 . Reprinted with permission from Metso Corporation More
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Published: 30 September 2015
Fig. 18 Stone hammer blow testing machine. Courtesy of Erichsen GmbH & Co. KG. Source: Ref 8 More
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Published: 30 September 2015
Fig. 22 Particles (+8 mesh) of copper powder hammer milled from oxide-reduced sinter cake. Courtesy of SCM Metal Products More
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Published: 01 January 2002
Fig. 10 Fracture surface of a piece of glass broken by striking it with a hammer. Origin is at the lower left; the wavelike lines are Wallner lines. Optical microscope; reflected light; picture width ∼3 mm. Source: Ref 3 More
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Published: 01 January 2002
Fig. 21 Pivotal hammer impact tester. Source: Ref 41 More
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Published: 01 January 2002
Fig. 1 Hammer-testing device used by McIntire and Manning. Source: Ref 3 More
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Published: 01 January 2002
Fig. 7 Front (a) and side (b) views of the hammer impact tester More
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Published: 01 January 2002
Fig. 27 Spall cavity in a small ball-peen hammer, 49 HRC. (a) 10×. (b) 28×. (c) 28×. (d) 224× More
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Published: 01 January 2002
Fig. 13(a) AISI S5 tool steel hammer head that cracked during heat treatment. The fracture was caused by quench cracking that was promoted by the decarburized surface ( Fig. 13(b) ) and deep stamp mark (arrows). Actual size More
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Published: 01 January 2002
Fig. 13(b) Macroetched disk cut from the head of the sledge hammer shown in Fig. 13(a) . The heavily decarburized surface is revealed by macroetching. Actual size More
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Published: 01 January 2005
Fig. 8 Specific energy vs. strain rate in the press and hammer forging of A-286 at three temperatures. Source: Ref 6 More