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die forger hammers

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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 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...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
..., and potentially damaging, shocks in the surrounding floor area. This necessitates the need for shock absorbing materials, such as timber or iron felt, in anvil-block foundations, adding appreciably to foundation cost. Die-Forger Hammers Similar in operation to power-drop hammers, die-forger hammers have...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... die is considerable in those cases where velocity is the major energy component (i.e., power hammer or drop hammer forging). Thus, the act of bringing the die halves together precisely can be a daunting task. As a result, the dimensional specifications for forgings will often take into account...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004000
EISBN: 978-1-62708-185-6
..., such as hammers, mechanical/screw presses, and hydraulic presses. Spin Forging Spin forging can also be used in titanium alloy forging fabrication, as with aluminum and other materials. This technique combines closed-die forging and computer numerically controlled (CNC) spin forgers and achieves very close...
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
... are much higher than those typical of more rapid deformation processes, such as hammers and mechanical or screw presses. Die heating techniques are discussed in the section “Heating of Dies” in this article. Die temperature ranges for the forging of aluminum alloys Table 2 Die temperature ranges...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005888
EISBN: 978-1-62708-167-2
... that the standby feature is convenient, for example, in hammer forging shops. One customer was forging heavy road working tools. They ran most of the morning with no issues. Later in the day, they started getting a mismatch condition in the die. The heater was stopped and put into standby mode, and sledge hammers...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003994
EISBN: 978-1-62708-185-6
... specific heat render it susceptible to die chill. Hammer forging minimizes the contact time between workpiece and die and can also maintain the forging temperature through adiabatic heating. Rotary forging machines using computer-controlled reduction schedules can maintain nearly isothermal conditions...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003992
EISBN: 978-1-62708-185-6
... to produce blocker-type, conventional, and close-tolerance forgings. Selection from the above closed-die types invariably depends on quantity and the cost of the finished part. Additional information on these types of products is available in the article “Closed-Die Forging in Hammers and Presses...
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
... 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...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003998
EISBN: 978-1-62708-185-6
... to the complications associated with its radioactivity, although the high-temperature properties of thorium-bearing alloys are impressive. Silver (Q) and copper (C) containing alloys have also been developed, and recent work in the area of high-pressure die-casting alloys has come to focus on additions of other...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005884
EISBN: 978-1-62708-167-2
... die cavities in a closed die without extreme forging pressure. The rules for sizing presses and hammers to produce steel parts are inadequate. Forging superalloys on undersized forging equipment can pose an insurmountable challenge. Smaller equipment results in more hits on a hammer or inadequate...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003986
EISBN: 978-1-62708-185-6
... . In very stiff presses this variation will be small, and thus stiff presses are considered more suitable for precision forging. Hammers and screw presses can forge to a precise thickness dimension because they can forge “die to die.” In these cases, kissing surfaces of the dies make contact when the finish...
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
... are limited primarily by the cooling that occurs when the heated workpiece comes into contact with the cold dies. For this reason, equipment that has relatively short die contact times, such as hammers, is often preferred for forging intricate shapes in steel. Adequate control of metal flow to optimize...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003993
EISBN: 978-1-62708-185-6
... alloys. The procedures, however, are generally different from those used for similar shapes from carbon or low-alloy steels (see the article “Closed-Die Forging in Hammers and Presses” in this Volume). For example, preforms made by open-die forging, upsetting, rolling, or extrusion are used...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001032
EISBN: 978-1-62708-161-0
... refinement of the austenite and increased ferrite content. Forgers are beginning to utilize this approach to enhancing the toughness of as-forged microalloyed steel; however, low finish forging temperatures are often avoided to minimize die wear. The specified properties of microalloyed forging steels can...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.9781627081993
EISBN: 978-1-62708-199-3
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
..., internal bursts or chevron cracks, cracks on free surfaces, cracks on die-contacted surfaces Metal-flow-related problems: for example, end grain and poor surface performance; inhomogeneous grain size; shear bands and locally weakened structures; cold shuts, folds, and laps; flow-through defects...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001046
EISBN: 978-1-62708-161-0
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.9781627081672
EISBN: 978-1-62708-167-2