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high-velocity mechanical forming

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500227
EISBN: 978-1-62708-317-1
..., including high-velocity hydroforming, high-velocity mechanical forming, and electromagnetic or energy-based forming. electromagnetic forming forming equipment high-velocity hydroforming high-velocity mechanical forming HIGH-VELOCITY FORMING (also called impulse forming, high-energy-rate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400161
EISBN: 978-1-62708-316-4
... the equipment. Therefore, it is necessary to develop a methodology to determine the optimized press parameters to form a given part with high quality. The biggest advantage the servo press has over mechanical presses is the ability to vary the velocities during forming. The velocity versus stroke curve...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400145
EISBN: 978-1-62708-316-4
... mechanical presses in the industry. Extended drives are designed either to change the slide velocity (link drive presses) or to generate high press forces with small ram displacements (knuckle joint and toggle presses) ( Ref 10.1 ). Simple Drive Presses The simplest drive of a mechanical press...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300079
EISBN: 978-1-62708-323-2
... composite. Some of these composites can be destroyed by droplet impact if the velocities are very high. A droplet can become like a liquid bullet that has sufficient energy on impact to fracture reinforcement or matrix in the composite. The mechanism of material removal can become fracture; pieces...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430314
EISBN: 978-1-62708-253-2
..., and steam cutting action ( Ref 6.38 , 6.39 ). Each of these mechanisms is discussed here. Soot Blower Erosion The function of the soot blower in a boiler is to blow off soot from the tube surface using a high-velocity jet of steam. However, the steam from soot blowers often leads to erosion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040115
EISBN: 978-1-62708-300-3
... p , largely depends on the energy required by the specific forming process and on the capacity of the drive mechanism to accelerate the screw and the flywheel. In general, however, the production rate of a screw press is lower than that of a mechanical press, especially in automated high-volume...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420135
EISBN: 978-1-62708-310-2
.... (a) Low growth velocity. (b) High growth velocity. Source: Ref 7.4 as published in Ref 7.5 Fibrous growth in the succinonitrile-20% ethanol system, in which the velocity is above the critical velocity for particle engulfment, is shown in Fig. 7.4 . Similar microstructures are observed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080235
EISBN: 978-1-62708-304-1
... may involve extremely high gas velocities, up to 250 m/s (820 ft/s), but with small particles (typically 5 μm) ( Ref 9 ). The erosion problems that have been encountered in the aforementioned systems all occur at elevated temperatures where the metal surface not only experiences mechanical damage...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060251
EISBN: 978-1-62708-355-3
... Rate Forming , Berman and Schroeder, Ed., American Society of Mechanical Engineers , 1984 , p 229 10.2172/6854600 21. Lennon A.M. and Ramesh K.T. , A Technique for Measurement of the Dynamic Behaviour of Materials at High Temperatures , Int. J. Plast. , Vol 14 (No. 12...
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
.... , A Hydraulic High-Speed Tryout Press for the Simulation of Mechanical Forming Processes , Journal of Materials Processing Technology , Vol 111 , 2001 , p 159 – 163 10.1016/S0924-0136(01)00502-7 12.26 Kürzinger F.X. , New Concepts for Hydraulic Production Press , New Developments in Sheet...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910099
EISBN: 978-1-62708-250-1
... hydrogen embrittlement, hydrogen-induced blistering, high-temperature hydrogen attack, and hydride formation). All these forms are addressed in this chapter in the context of aqueous corrosion. For each form, a general description is provided along with information on the causes and the list of metals...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410213
EISBN: 978-1-62708-265-5
... two forms in steels with ferritic microstructures. Continuous yielding results when high densities of unpinned dislocations are present. The high densities of dislocations may be generated by mechanical working or by the introduction of martensite into ferritic microstructures, as is done in the dual...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460001
EISBN: 978-1-62708-285-3
... particles in the range of 5 to 100 μm in diameter are accelerated in a supersonic jet of heated gas to high velocities, typically on the order of 300 to 1200 m/s (1000 to 4000 ft/s), and then sprayed onto a hard substrate surface; for example, a metal, ceramic, or glass. If the velocity is high enough...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
... was based on the experimental work [ Semiatin et al., 1987 ]. Table 6.2 gives the conditions used in the finite element modeling. The hydraulic press used had a capacity of 700 metric tons. The ram velocity was assumed constant during deformation. Mechanical press used was a high-speed Erie press...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040107
EISBN: 978-1-62708-300-3
..., weight, and the associated power requirements. Apart from the features mentioned previously, some of the basic requirements that are expected of a good forging machine can be listed as: High tool pressure, which requires the stock to be tightly gripped and upsetting forces completely absorbed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030117
EISBN: 978-1-62708-282-2
... flue gas In more severe cases, erosion can result in very rapid attack that quickly leads to thinning and penetration. Conditions that give rise to such rapid erosion usually involve high velocities, large amounts of entrained solid or liquid particles, and abrupt changes in direction...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300013
EISBN: 978-1-62708-323-2
... lubricated tribosystems can have system coefficient of friction (COF) vary with viscosity and operating conditions The Stribeck curve suggests that lubricated tribosystems show high friction at low velocity, which decreases as velocity increases, and then increases at a relatively low rate. Boundary...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500083
EISBN: 978-1-62708-317-1
... alloys, consideration must be given to the high thermal conductivity and low specific heat capacity of these alloys, because they can lose and gain heat rapidly when they come in contact with the dies. Many methods are used for heating sheet and tools before and during forming operations, depending...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040001
EISBN: 978-1-62708-428-4
..., are needed to inject materials into the thermal spray gun/torch and to generate the necessary heat for melting. The high gas velocities associated with these processes cause the material to be propelled as fine molten droplets that impinge on the part, solidify, and adhere. The mechanism of bonding is mostly...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460017
EISBN: 978-1-62708-285-3
... Abstract This chapter reviews the current understanding of high-pressure cold spraying for different materials, covering widely accepted general mechanisms for particle deposition and the processes and parameters involved. It begins by reviewing the mechanisms of bonding. An overview...