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warm forming

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500083
EISBN: 978-1-62708-317-1
... Abstract This chapter describes the effect of temperature and strain rate on the mechanical properties and forming characteristics of aluminum and magnesium sheet materials. It discusses the key differences between isothermal and nonisothermal warm forming processes, the factors that affect...
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Published: 01 August 2012
Fig. 6.4 Schematic of experimental setup for warm forming cylindrical cups of SS304 steel. Source: Ref 6.4 More
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Published: 01 August 2012
Fig. 11.20 Press slide motion used in warm forming processes. The ram motion followed points 1 through 8. TDC, top dead center; BDC, bottom dead center. Source: Ref 11.16 More
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Published: 01 August 2012
Fig. 11.22 Schematic of tooling and sequence of operations used in warm forming. Source: Ref 11.16 More
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Published: 01 August 2012
Fig. 5.19 In nonisothermal warm forming, cooling the die corner and the punch increases drawability. More
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Published: 01 August 2012
Fig. 5.21 Polytetrafluoroethylene film used in warm forming. Source: Ref 5.14 More
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Published: 01 August 2012
Fig. 5.26 Open warm forming tooling (top die set on the left, bottom die set on the right). Courtesy of Aida-America Corporation More
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Published: 01 August 2012
Fig. 5.27 Tooling design for warm forming in a hydraulic press using gas ring burners. Source: Ref 5.13 More
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Published: 01 August 2012
Fig. 5.28 Tooling design for warm forming in a mechanical press using electric heating elements. Source: Ref 5.13 More
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Published: 01 August 2012
Fig. 5.30 Slide motion of the servo press in warm forming. TDC, top dead center; BDC, bottom dead center 1-2 Fast approach 2-3 Slower approach reduces impact and vibrations. Both tools are in contact at 3. 3-4 Dwell (heating of the blank) 4-5 Slower punch velocity More
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Published: 01 August 2012
Fig. 11.21 Warm-formed laptop case from Mg alloy More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400161
EISBN: 978-1-62708-316-4
... servo presses and describes some of the innovations and improvements made possible with high-torque servo motors. The chapter provides examples of how servo presses are used in blanking, warm forming, and other applications and compares the operating characteristics of two 1100-ton presses, one driven...
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
.... The chapter goes on to describe the load, energy, and time-dependent characteristics of hydraulic presses and the factors that determine accuracy. It also explains how hydraulic presses are used for deep drawing, fine blanking, and hydroforming as well as warm forming and hot stamping operations...
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Published: 30 April 2020
Fig. 6.26 Bronze statue formed by warm slurry casting in rubber tooling More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400073
EISBN: 978-1-62708-316-4
... hardening during forming. Temperature, strain, and strain rate play important roles in controlling the change in microstructure. Warm forming improves formability of austenitic stainless steels. When austenitic stainless steels are formed at room temperatures, the austenitic phase, being unstable...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040001
EISBN: 978-1-62708-300-3
... rate). When the work temperature is raised, ductility is increased and yield strength is decreased. The effect of temperature gives rise to distinctions among cold forming (workpiece initially at room temperature), warm forming (workpiece heated above room temperature, but below the recrystallization...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
.... (a) Frictionless. (b) With friction 7.2 Lubrication Mechanisms in Metal Forming There are four basic types of lubrication that govern the frictional conditions in metal forming [ Altan, 1970 ] [ Schey, 1983 ]. The Stribeck curve shown in Fig. 7.2 illustrates the onset of these various types...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500157
EISBN: 978-1-62708-317-1
... by using optimum BHF. Fig. 8.24 Comparison of predicted and measured wall thickness. FE, finite-element 8.9 Elevated-Temperature Sheet Hydroforming Warm sheet hydroforming is a relatively new technology that combines the advantages of elevated-temperature sheet metal forming with sheet...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040211
EISBN: 978-1-62708-300-3
... life warm forging 17.1 Introduction Cold forging is defined as forming or forging of a bulk material at room temperature with no initial heating of the preform or intermediate stages. Cold extrusion is a special type of forging process wherein the cold metal flows plastically under compressive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230295
EISBN: 978-1-62708-298-3
... Abstract The vast majority of beryllium products are manufactured from blocks, forms, or billets of compacted powder that are machined or worked into shape. This chapter describes the metalworking processes used, including rolling, forming, forging, extrusion, drawing, and spinning. It covers...