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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
..., 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 presses...
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
... Abstract Forgings are classified in various ways, beginning with the general classifications open die and closed die. They are also classified according to how they are made; such as hammer upset forgings, ring-rolled forgings, and multiple-ram press forgings; and in terms of the close...
Image
Published: 01 January 2005
(revised) Material AMS 6431 (D-6ac steel) (a) (b) Forging equipment 100 MN (11,000 tonf) multiple-ram press Forging operations (c) Roughing (d) ; finishing (e) Heat treatment Anneal (f) (b) ; harden and temper (g) (b) Mechanical properties (h) Inspection Bloom inspection More
Image
Published: 01 January 2005
Fig. 23 Ground-speed brake cylinder-actuator forging that was cored and forged seamless (flashless) in a multiple-ram press. See Example 1. Dimensions in figure given in inches Material Aluminum alloy 7079 Heat treatment (temper) T611 Mechanical properties (a) Inspection More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
...-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...
Image
Published: 01 January 2005
Conventional forgings Solid (estimate) Pierced and reverse extruded Material Modified 4340 steel (a) Forging equipment … Multiple-ram press Forging operations … Pierce and extrude Heat treatment Normalize; harden; and temper (b) Mechanical properties (c) Inspection (d More
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: 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: 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 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: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005180
EISBN: 978-1-62708-186-3
... of multiple-slide machines. It presents comparisons of four-slide operations with press operations based on production speed, tooling cost, tool adjustments, and operating cost. The article reviews some factors to be considered while selecting multiple-slide machines. It summarizes the strip materials...
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
.... 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 with a ram operating in the horizontal...
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
... onto the lower die assembly, the machine is actuated and the part is retracted into the machine, where it is centered below the upper hydraulic ram assembly. The outer machine guard is lowered as the assembly descends, and the center ram actuates one (or multiple) internal expanders that make contact...
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...
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 Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... or nonferrous metals. The article reviews the various types of forming processes such as blanking, piercing, fine-edge blanking, press bending, press forming, forming by multiple-slide machines, deep drawing, stretch forming, spinning, rubber-pad forming, three-roll forming, contour roll forming, drop hammer...
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
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
... one end looks like a cup and the other a ange decreases. Also called cup drawing or which both the ram and the anvil are driven cone. radial drawing. de ection. The amount of deviation from a straight line or plane when a force is applied to a press member. Generally used to specify the allowable...
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...
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
... 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 weld repair...