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multiple-ram presses

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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
... hammers, and computer-controlled hammers. It describes the three basic designs of high-energy-rate forging (HERF) machines: the ram and inner frame, two-ram, and controlled energy flow. The article reviews forging mechanical presses, hydraulic presses, drive presses, screw presses, and multiple-ram...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001021
EISBN: 978-1-62708-161-0
...-ram press forgings; and in terms of the close-to-finish factor or amount of stock that must be removed to satisfy the dimensional and detail requirements of the finished part. In addition to types and classifications, the article discusses critical design factors and ways to ensure that the resulting...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
..., screw-type, and multiple-ram). It further discusses the technologies used in the design of dies, terminology, and materials selection for dies for the most common hot-forging processes, particularly those using vertical presses, hammers, and horizontal forging machines. A brief section is included...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004040
EISBN: 978-1-62708-185-6
... and several machining operations, and in improving mechanical properties by additional hot deformation. The nozzle shell fitting ( Fig. 5c ) was relatively squat, with a diameter that exceeded its maximum length. This forging was pierced in a multiple-ram press to develop the large internal cavity shown...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004037
EISBN: 978-1-62708-185-6
... in a multi-ram process, a modification of typical hammer and press forging. It weighed 5.2 kg (11.5 lb), compared with 7.7 kg (17 lb) when the forging was produced as a solid cylinder with a beaded parting line. The hollow forged cavity, about 60 mm (2 3 8 in.) in diameter and 302 mm (11 7 8...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004034
EISBN: 978-1-62708-185-6
... it is oblique to the forging plane. Dimensions given in inches. Horizontal Ram Rams that operate in the horizontal direction are employed in upsetting forging machines and also in multiple-ram presses; in the latter, horizontal rams operate in conjunction with a vertical ram. A forging operation...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003097
EISBN: 978-1-62708-199-3
... and detail requirements of the finished part ( Fig. 1 ). Finally, forgings are classified in terms of the forging equipment required for their manufacture: for example, hammer upset forgings, ring-rolled forgings and multiple-ram press forgings (see the Section “Forging” in this Handbook for more detailed...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005113
EISBN: 978-1-62708-186-3
... the entire stroke, and the applied load and ram speed are variable up to the machine rated limits. A hydraulic press brake also permits much longer strokes for deep drawing, multiple punch-stepping, or large, complex, multiple-action dies. Extralong cylinders can be installed for extremely long strokes...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006034
EISBN: 978-1-62708-175-7
... partmaking capabilities as the single-punch opposing ram system in terms of pressing capacity, depth of fill, and production rate. The major difference is that floating dies are used to achieve top and bottom pressing. The die is moved downward to eject the part. Multiple-Motion Die Set Presses...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... types of presses Type of press Type of frame Position of frame Action Method of actuation Type of drive Suspension Ram Bed Open-back Gap Straight-side Arch Piller Solid Tie Rod Vertical Horizontal Inclinable Inclined Single Double Triple Crank Front-to-back crank...
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
... the deformation results from dissipating the kinetic energy of the hammer ram. The hammer frame guides the ram, but is essentially not stressed during forging. The screw presses are also energy-restricted machines, but they are similar to the hydraulic and mechanical presses since their frames are subject...
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.a0004006
EISBN: 978-1-62708-185-6
... of operations for the direct extrusion of a solid section is as follows ( Ref 3 ): The heated billet and the dummy block are loaded into the container. Dummy blocks may also be affixed to the stem of the press main ram and are called fixed dummy blocks. The billet is extruded by the force...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005338
EISBN: 978-1-62708-187-0
... casting casting defects centrifugal casting chemical properties hot isostatic pressing induction skull melting investment casting machining mechanical properties postweld heat treatment static casting vacuum arc skull melting vacuum induction melting foundry melting rammed graphite casting...
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
... that is connected to multiple quenching machines simultaneously. The machine upright houses the upper die ram, the hydraulic manifolds, hydraulic lines, solenoids and valves, and the electrical panel control box. A control screen listing the various features that may be adjusted during the course of a quenching...
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: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005180
EISBN: 978-1-62708-186-3
... be located on the desired side of the part by locating the tooling on the proper ram. The piercing head is actuated by solid-type cams for reasons of strength. In addition, the cams used in this application are not changed as frequently as are other cams. After being formed, the part is stripped from...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005177
EISBN: 978-1-62708-186-3
... into the die by a punch that is actuated by the ram portion of a machine called a press brake. The process is most widely used for the forming of relatively long, narrow parts that are not adaptable to press forming and for applications in which production quantities are too small to warrant the tooling cost...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003975
EISBN: 978-1-62708-185-6
... forging, are discussed in the articles in the Section “Forging Processes” in this Volume. Open Dies Most open-die forgings are produced in a pair of flat dies—one attached to the hammer or to the press ram and the other to the anvil. Swage (semicircular) dies and V-dies are also commonly used...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004022
EISBN: 978-1-62708-185-6
... equal to each other, because the strain rate is linear in ram velocity, and the initial billet diameter is constant. Since the minimum is same for multiple pairs, any of the pairs is equally suitable. However, at ram velocity of 60 mm/s, the optimal semi-angle is too close to F <0 and may...