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counterblow hammers

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Published: 01 December 1998
Fig. 3 Essential components of a vertical counterblow hammer with a steam-hydraulic actuating system More
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.a0003974
EISBN: 978-1-62708-185-6
... equipment Forging machine Speed range Speed-stroke behavior ft/s m/s Hydraulic press 0.2–1.0 (a) 0.06–0.30 (a) Mechanical press 0.2–5 0.06–1.5 Screw press 2–4 0.6–1.2 Gravity-drop hammer 12–16 3.6–4.8 Power-drop hammer 10–30 3.0–9.0 Counterblow hammer 15...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
... a shorter stroke and faster striking rate. Typically, these hammers can deliver approximately 5.5 to 90 kJ (4000 to 66,000 ft · lb) of energy per blow. Pressurized air energizes the blow. Counterblow Hammers Another variation of the power-drop hammer, the counterblow hammer develops striking force...
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
...- blows on the workpiece at a midway point. cupping. (1) The rst step in deep drawing. (2) nally within the die opening. As the punch Action is vertical or horizontal. Fracture of severely worked rods or wire in forms the cup, the amount of material in the counterblow hammer. A forging hammer in which...
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
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: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005155
EISBN: 978-1-62708-186-3
... in tensile test cracks, shear bands, and so on that may cul- specimens of a ductile material, in which the minate in gross fracture in severe cases. The counterblow hammer. A forging hammer in central portion undergoes plane-strain fracture evolution of damage is strongly dependent on which both the ram...
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
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005454
EISBN: 978-1-62708-196-2
.... occurs under the action of largely compres- When bend or twist exceeds tolerances, it is board hammer. A type of forging hammer in sive loading. Compare with sheet forming. considered a defect. Corrective action con- which the upper die and ram are attached to sists of hand straightening, machine straigh...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005543
EISBN: 978-1-62708-197-9
... approximately 230 cm2 (36 in.2). Steel surface-to-volume ratio in the formed part bent specimen or the bent area in a formed part. blooms are sometimes made by forging. occurs under the action of largely compres- board hammer. A type of forging hammer in sive loading. Compare with sheet forming. bend test...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.9781627081979
EISBN: 978-1-62708-197-9
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.9781627081962
EISBN: 978-1-62708-196-2
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.9781627081993
EISBN: 978-1-62708-199-3