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hot forging

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040295
EISBN: 978-1-62708-300-3
...Abstract Abstract This chapter addresses the issue of die failures in hot and cold forging operations. It describes failure classifications, fatigue fracture and wear mechanisms, analytical wear models, and the various factors that limit die life. It also includes several case studies in which...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.9781627083003
EISBN: 978-1-62708-300-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040115
EISBN: 978-1-62708-300-3
... are used for hot and cold forging, cold extrusion trimming, and coining. Developments in the forging industry are greatly influenced by the worldwide requirements for manufacturing ever-larger and more complex components for more difficult-to-forge materials. The present and future needs...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040257
EISBN: 978-1-62708-300-3
...Abstract Abstract This chapter discusses the processes of isothermal and hot-die forging and their use in producing aerospace components. It explains how isothermal forging was developed to provide a near-net shape component geometry and well-controlled microstructures and properties...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130133
EISBN: 978-1-62708-284-6
... in either cold forging or hot forging in terms of preforge factors and/or discontinuities generated by the forging process. Supporting topics that are discussed in the case studies include validity checks for buster and blocker design, lubrication and wear, mechanical surface phenomenon, forging process...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040277
EISBN: 978-1-62708-300-3
...Abstract Abstract This chapter discusses the factors that affect die steel selection for hot forging, including material properties such as hardenability, heat and wear resistance, toughness, and resistance to plastic deformation and mechanical fatigue. It then describes the relative merits...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740103
EISBN: 978-1-62708-308-9
...Abstract Abstract This chapter discusses bulk deformation processes and how they are used to reshape metals and refine solidification structures. It begins by describing the differences between hot and cold working along with their respective advantages. It then discusses various forging...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
... processes. The chapter also describes several test methods for evaluating lubricants and explains how to interpret associated test data. cold forging friction hot forging lubrication 7.1 Introduction 7.2 Lubrication Mechanisms in Metal Forming 7.3 Friction Laws and Their Validity...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220353
EISBN: 978-1-62708-259-4
... of a forged rail axis. The segregated areas originated from the “A” segregates are less pronounced than in Fig. 11.6 . These comparisons can only be performed if the parts are prepared and etched in exactly the same conditions. Etchant: hot hydrochloric acid. Courtesy of M. Talarico, N. Oliveira, CETEC, Belo...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
... Laboratories , 1972 . [Brucelle et al., 1999] Brucelle O. , and Bernhart G. ,” Methodology for Service Life Increase of Hot Forging Tools, ” Journal of Materials Processing Technology , Vol. 87 , 1999 , p 237 . 10.1016/S0924-0136(98)00357-4 [Hardwicke et al., 2000] Hardwicke C...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
... Transfer and Friction During Hot Forging ,” Report No. ERC/NSM-B-89-20, ERC for Net Shape Manufacturing, Ohio State University , June 1989 . [Douglas et al., 1971] Douglas J.R. , Altan T. , “ Characteristics of Forging Presses: Determination and Comparison, ” Proceedings of the 13th...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040185
EISBN: 978-1-62708-300-3
... V. , Altan T. , “ Development of Computer Program for Estimation of Forging Load and Die Pressures in Hot Forging, ” Report No. F/ERC/NSM-99-R-18, Engineering Research Center for Net Shape Manufacturing, The Ohio State University , 1999 . [Nagpal et al., 1975] Nagpal V...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040141
EISBN: 978-1-62708-300-3
..., ” Met. Treat. , Aug 1965 , p 296 . Prior to forging in an impression die, billet stock must be often preformed to achieve adequate material distribution, especially in hot forging with flash. Several special machines are used for the purpose of preforming the incoming stock. Some...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040001
EISBN: 978-1-62708-300-3
.... , Introduction to Manufacturing Processes , McGraw-Hill , 2000 , p 67 – 69 . Selected References Selected References [Altan, 2002] Altan T. , “ Short Course on Near Net Shape Cold, Warm and Hot Forging Without Flash ,” Engineering Research Center for Net Shape Manufacturing, The Ohio State...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040007
EISBN: 978-1-62708-300-3
... variables (such as composition, voids, inclusions, and initial microstructure). In hot forging processes, temperature gradients in the deforming material (for example, due to local die chilling) also influence metal flow and failure phenomena. The selection of a machine for a given process is influenced...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040159
EISBN: 978-1-62708-300-3
... Design in Closed Die Forging, ” Doctoral dissertation , Technical University of Hannover , 1969 . Selected References Selected References [Brucelle et al., 1999] Brucelle O. , and Bernhart G. , “ Methodology for Service Life Increase of Hot Forging Tools, ” Journal of Material...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040107
EISBN: 978-1-62708-300-3
.... However, in principle, most of the same relationships apply also in other hot forming processes such as hot extrusion and hot rolling. It is useful to consider forming load and energy as related to forming equipment. For a given material, a specific forming operation (such as closed-die forging...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040083
EISBN: 978-1-62708-300-3
...-strain relationship for plastic range. At elevated temperature, flow stress is sensitive to rate of deformation. Thus, for warm and hot forgings, flow stress is expressed in function of strain, strain-rate, and temperature. Examples of flow stress equations and material parameters are summarized...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040247
EISBN: 978-1-62708-300-3
...Abstract Abstract This chapter discusses the development and use of microstructure models for optimizing superalloy forging operations. It describes how the processes that control grain structure evolution during hot working were used in model formulation and compares predicted microstructures...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240279
EISBN: 978-1-62708-251-8
... conducted hot. Secondary processes, which are used to produce the final product shape, are conducted either hot or cold. The chapter discusses the primary objectives, principal types, advantages, and disadvantages of both primary and secondary metalworking processes. They are rolling, forging, extrusion...