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gravity-drop hammers

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040115
EISBN: 978-1-62708-300-3
..., ram velocities, and energy and stiffness requirements. It also includes information on gravity- and power-drop hammers and where and how they are typically used. gravity-drop hammers hydraulic presses mechanical presses power-drop hammers screw presses References [Altan...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480243
EISBN: 978-1-62708-318-8
... Gravity-hammer and pneumatic drop-hammer presses form titanium by progressive deformation with repeated blows in matched dies. These processes are suited to forming recessed sheet parts from materials that are not sensitive to high strain rates. Typical parts and the associated dies are shown in Fig...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740163
EISBN: 978-1-62708-308-9
... progressive deformation of sheet metal in matched dies under the repetitive blows of a gravity drop or a power drop hammer. Configurations most commonly formed by the process include shallow, smoothly contoured, double-curvature parts; shallow-beaded parts; and parts with irregular and comparatively deep...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040107
EISBN: 978-1-62708-300-3
...) 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 (total speed) 15–30 4.5–9.0 HERF machines 20–80 6.0–24.0 Low-speed Petroforge 8–20 2.4–6.0 Source...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740103
EISBN: 978-1-62708-308-9
... forging. Source: Ref 5 Metals can be forged using hammers, mechanical presses, or hydraulic presses. Hammer forging operations can be conducted with either gravity or power drop hammers and are used for both open- and closed-die forgings. Hammers deform the metal at high deformation speeds...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.9781627083003
EISBN: 978-1-62708-300-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400005
EISBN: 978-1-62708-316-4
... Marform process: (a) die open; (b) die closed. Source: Ref 2.2 Drop hammer forming is a process for producing shapes by the progressive deformation of sheet metal in matched dies under repetitive blows of a gravity-drop or power-drop hammer ( Fig. 2.20 ): Equipment: hammers Materials...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240279
EISBN: 978-1-62708-251-8
... either gravity or power drop hammers and are used for both open- and closed-die forgings. Hammers deform the metal with high deformation speed; therefore, it is necessary to control the length of the stroke, the speed of the blows, and the force being exerted. Hammer operations are frequently used to...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290009
EISBN: 978-1-62708-319-5
... reveals the surface area. The measurement is referred to as the BET specific surface area, named after Brunauer, Emmett, and Teller, who developed the concept in 1938. Gas permeability also depends on the surface area. The measurement applies a small pressure drop along a column containing the powder, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410151
EISBN: 978-1-62708-280-8
... have different requirements than pouring cups in static vertical pours. The basic requirements of a tilt-pour pouring cup are: The pouring cup shape should have a maximum volume-to-surface-area ratio to ensure minimum temperature drop. The cups should have a minimum area open to atmosphere to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410215
EISBN: 978-1-62708-280-8
... chilling of rib–rim junction Dynamic side impact resistance Curb impact on window, spoke Wheel at 13 deg. to horizontal Loading block of 576 kg dropped from 230 mm (9 in.) above the wheel High elongations of inboard and outboard rim flanges for high plastic strain, due to curb...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850334
EISBN: 978-1-62708-260-0
... the Rockwell test. Mutual indentation of two samples with the same or different geometry under a known load can also be used to measure hardness. Dynamic tests A rounded diamond-tipped hammer, or similar device, is dropped from a known height onto the specimen surface. The height of the rebound is...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.9781627083164
EISBN: 978-1-62708-316-4
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240509
EISBN: 978-1-62708-251-8
..., including press brake forming, deep drawing, manual and power spinning, rubber pad forming, stretch forming, drop hammer forming, and impact extrusion. Forming magnesium alloys at elevated temperatures has several advantages: (1) forming operations can usually be conducted in one step without the need for...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.9781627082617
EISBN: 978-1-62708-261-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550033
EISBN: 978-1-62708-307-2
... desired thickness down to foil thinner than paper. Aluminum sheet can be stamped, drawn, spun, or roll formed. The metal also may be hammered or forged. Aluminum wire, drawn from rolled rod, may be stranded into cable of any desired size and type. There is almost no limit to the different profiles (shapes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060085
EISBN: 978-1-62708-261-7
... cannot be allowed to drop below the liquidus temperature of the alloy before the pouring process is completed. Otherwise, partially solidified material would be transferred into the molds, and this could have very serious consequences during the pouring or teeming operation itself. The number of degrees...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.9781627082600
EISBN: 978-1-62708-260-0
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030247
EISBN: 978-1-62708-282-2
... even trace concentrations (≥10 ppb) can be harmful, to a varying degree, depending on its concentration and other corrosive constituents in the system. The corrosion potential of steel under these conditions (almost 1.3 V) is high enough to overcome very substantial potential drops between anodic and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.9781627082587
EISBN: 978-1-62708-258-7