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hydraulic presses

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Book Chapter

By Eren Billur
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400181
EISBN: 978-1-62708-316-4
... Abstract This chapter discusses the design and operation of hydraulic presses. It begins by describing the role of each major component in a hydraulic system. It then explains the difference between pump-driven and accumulator-driven presses and the types of applications for which are suited...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040115
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the design and operation of forging presses and hammers. It covers the most common types of presses, including hydraulic, mechanical, and screw presses, explaining how they work and comparing and contrasting their load and displacement profiles, stroke lengths...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400129
EISBN: 978-1-62708-316-4
... Machines: These presses are capable of supplying the nominal machine load ( L M ), at any position of slide. Hydraulic presses belong to this category and are explained in more detail in Chapter 12, “Hydraulic Presses,” in this book. Stroke-Restricted Machines: These are usually mechanical presses...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400161
EISBN: 978-1-62708-316-4
... metal forming presses that utilize the mechanical servo-drive technology. The mechanical servo-drive press offers the flexibility of a hydraulic press (infinite ram speed and position control, availability of press force at any ram position) with the speed and reliability of a mechanical press ( Ref...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400145
EISBN: 978-1-62708-316-4
... S. , “Hydraulic Overload Protection,” AIDA Technical Bulletin 2 , 2002 10.23 Ross Controls, Principles of Counterbalance Systems, Product Catalogue , 1999 10.24 Hinterman W.H. and Hinterman T. , Understanding Press Counterbalance Conditions Using Strain Technology...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400203
EISBN: 978-1-62708-316-4
... tearing in the formed part ( Ref 13.1 ). In some cases a custom-built cushion system in the tooling provides the necessary force for the blank holder. Presses used for deep drawing could be either single action or double action (in some cases triple action) and have either mechanical or hydraulic drives...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260055
EISBN: 978-1-62708-336-2
.... Modern presses are generally equipped with special features, including die clamping, quick-release stems, automatic alignment checking, bolster shearing, telescopic billet loaders, short-stroke design, and computer software for higher production and quality. The hydraulic equipment, including pumps and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
... effects, but the maximum load is lower than for either hydraulic or screw presses. The reason for this is that in the presses the flash cools rapidly, whereas in the hammer the flash temperature remains nearly the same as the initial stock temperature. Fig. 6.3 Load-versus-displacement curves...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500083
EISBN: 978-1-62708-317-1
... press. In this setup, ring burners provide gas heat to the blank holder, draw ring, bottoming die, and punch when necessary. Figure 5.28 shows a different tool setup with electric heaters used in a mechanical press. Fig. 5.27 Tooling design for warm forming in a hydraulic press using gas ring...
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
... hydraulic or mechanical devices, but hydraulic presses are preferred because of better control of the rate of punch travel. A flat blank is formed into a cup by forcing a punch against the center portion of a blank that rests on the die ring. The progressive stages of metal flow in drawing a cup from a...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500019
EISBN: 978-1-62708-317-1
... design and operation of press brakes and other bending machines. bending contour flanging hemming hole flanging press brakes BENDING, FLANGING, AND HEMMING are widely used in sheet metal fabrication where the parts require simple or complex bent profiles ( Fig. 2.1 ). Bending is usually...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500179
EISBN: 978-1-62708-317-1
... hydroforming equipment are to close the die set, provide clamping load during forming, pump high fluid pressure into the tube, and transmit the axial force to the tube ends to feed the material. Tube hydroforming equipment comprises a press, tooling, a hydraulic pressure intensifier, and a control system...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500107
EISBN: 978-1-62708-317-1
... example comparison of the maximum force predicted by FEA and the actual maximum force required to form parts from AHSS using a hydraulic press. It could be observed that finite-element predictions are within ±20% of the load measured in production. Table 6.5 Comparison of forming force predicted by...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040319
EISBN: 978-1-62708-300-3
.... 23.12 . In order to increase the accuracy of the product and to extend the service life of the tools, press builders have developed multislide and multiaction hydraulic presses [ Nakano, 1997 , and Ishinaga, 1996 ]. Fig. 23.12 Characteristics of press and accuracy of formed products [ Nakano...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290111
EISBN: 978-1-62708-319-5
... powder. This helps to prevent long, thin samples from buckling during the pressing operation. There are two variants of CIP: wet bag and dry bag. With a wet bag, the filled and sealed mold is immersed in a fluid chamber that is pressurized by an external hydraulic system, as illustrated in Fig. 6.1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040141
EISBN: 978-1-62708-300-3
... Abstract Prior to forging, it is often necessary to preform billet stock to achieve adequate material distribution. This chapter discusses the equipment used for such operations, including transverse rolling machines, electric upsetters, ring-rolling mills, horizontal presses, and rotary...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700177
EISBN: 978-1-62708-279-2
.... 12.10 Effect of draw bead penetration, tool gap, and punch radius on springback of steel. Source: Ref 12.3 Higher-than-normal binder pressure and press tonnage is necessary with HSS and AHSS to maintain process control and to minimize buckles on the binder. Double-action press or hydraulic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140021
EISBN: 978-1-62708-335-5
... which molten metal solidifies under pressure within closed dies positioned between the plates of a hydraulic press is the only version of current commercial interest. The applied pressure and retained contact of the metal with the die surface improves heat transfer and inhibits hydrogen precipitation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280117
EISBN: 978-1-62708-267-9
... superalloys. It describes the gas, vacuum, and centrifugal atomization processes used to make commercial superalloy powders. It explains how the powders are consolidated into preforms or billets using hot isostatic pressing, extrusion, or a combination of the two. It also provides information on spray forming...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000039
EISBN: 978-1-62708-312-6
... Abstract This chapter discusses the methods by which stainless steel powders are shaped and compacted prior to sintering, including rigid die compaction, metal injection molding, extrusion, and hot isostatic pressing. It explains where each process is used and how processing parameters, such as...