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heat-transfer model

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130001
EISBN: 978-1-62708-284-6
... the performance of the design process of a component. A heat-transfer model, coupling with a phase transformation model, a thermomechanical model, and a thermochemical model, is also considered. The chapter further provides information on the failure aspects of and heat treatment procedures applied to welded...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
... into the tooling. The temperatures developed during the forging operation influence lubrication conditions, tool life, as well as microstructure and properties of the forged part. With the finite element based process modeling, the heat generation during deformation and heat transfer before, during, and after...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
... hot forging modeling is a coupled heat-transfer and deformation simulation. Material parameters that relate to both heat transfer and deformation need to be defined. The material parameters commonly used for heat-transfer modeling are the thermal conductivity, heat capacity, and emissivity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
... developed by Behrens et al. ( Ref. 7.22 ) can be used for implicit simulation methods, which are more efficient for heat-transfer simulations that involve longer duration and small deformations. This model uses the Johnson-Mehl-Avrami equation for diffusion-controlled austenite transformation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260029
EISBN: 978-1-62708-336-2
... are given in practical numerical form. Heat transfer mechanisms of extruded sections as they come out of the extrusion press were examined and a model was developed by Pham ( Ref 13 ) to simulate the temperature profile of the extruded sections on the run-out table. The model is based on the assumption...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870201
EISBN: 978-1-62708-314-0
... Abstract This chapter provides an overview of the tools and techniques, as well as some of the underlying theory, that have proven useful for process modeling and simulation. It begins by presenting the framework of a thermoset cure model that accounts for kinetics, viscosity, heat transfer...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200133
EISBN: 978-1-62708-354-6
... design of steel castings 5. Berry J.T. and Pehlke R.D. , Modeling of Solidification Heat Transfer , Metals Handbook , Vol 15 , 9 th ed. 6. Lewis R.L. , Liou Shuhyuan, and Shin Ye-Don, Literature Review of Solidification Simulations in the Design of Sand Castings , Steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
... contact conditions between die and tool, and heat transfer between tool and part. Simulation of hot stamping was modeled according to process sequence, which included blank heating and blank transfer, blank forming at elevated temperature, heat transfer during quenching, and air cooling. Figure 3.15...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040185
EISBN: 978-1-62708-300-3
... Abstract This chapter presents a relatively simple method for estimating forging loads and flow stresses. The method uses the slab analysis technique and accounts for material properties, friction and heat transfer, press ram speed, forging geometry, and billet and die temperatures. The chapter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500083
EISBN: 978-1-62708-317-1
... heat transfer, die heating techniques, and press systems. It also discusses the effect of forming temperature, punch velocity, blank size, and other parameters on deep drawing processes, making use of both experimental and simulated data. aluminum alloys deep drawing die heating formability...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460067
EISBN: 978-1-62708-285-3
... ) where p H and E H are the Hugoniot pressure and specific energy, respectively, and G is the Grüneisen ratio. In the modeling of particle impact, EOS is normally used together with elastic shear modulus. Energy Dissipation and Heat Transfer The kinetic energy of an impinging particle...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410487
EISBN: 978-1-62708-265-5
... stress requires a remarkable integration of thermal, microstructural, and mechanical interactions, all as a function of time, temperature, and location. Not only was the modeling effort intensive, but also the process required good input data, including heat-transfer boundary conditions in oil and salt...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780267
EISBN: 978-1-62708-281-5
... and friction phenomena are influenced mainly by the shear and adhesive properties of the transferred film. Reprinted with permission from Ref 1 A distinction within the interfacial wear process may be made based on whether or not the frictional heat dissipation is isothermal or quasi-adiabatic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500157
EISBN: 978-1-62708-317-1
... surface, and material anisotropy) over the range of forming temperatures (25 to 350 °C, or 75 to 660 °F) and deformation rates (strain rates). Data on heat transfer and friction between the workpiece and tools are also needed. Data required as input to finite-element modeling for accurate process...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280079
EISBN: 978-1-62708-267-9
... of dissolution in an appropriate base (e.g., KOH) to clean passages or external surfaces with no metal deformation by mechanical processing. The shell must be strong enough to resist deformation but thin enough to let heat of solidification be transferred away by conduction and radiation. Mold design...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1996
DOI: 10.31399/asm.tb.phtpclas.t64560001
EISBN: 978-1-62708-353-9
... are reviewed. Then the heat transfer process during quenching is examined. Methods of estimating the temperature-time curve during quenching at various locations in simple shapes (e.g., bars, plates) are presented. This information, coupled with the hardenability information, allows estimating the hardness...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040295
EISBN: 978-1-62708-300-3
....) Fig. 22.7 Contact time components in forging processes [ Dahl et al., 1998 ] As shown in Fig. 22.8 , the heat-transfer coefficient at the die/workpiece interface is different for the different contact time components. Fig. 22.8 Heat-transfer coefficient and temperature changes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440055
EISBN: 978-1-62708-262-4
...). Those classifications, for the most part, are used in the remainder of this chapter. Many types and designs of heat treating furnaces, regardless of the mode of heat transfer or the medium employed for heat transfer, are available as standard models. When an existing predesigned and/or prebuilt...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050009
EISBN: 978-1-62708-311-9
... to the relationship between the physical and electrical properties of the part as it is heated through rising temperatures. These functions include the properties of heat transfer such as thermal conductivity and specific heat, and electrical and magnetic properties such as resistivity, permeability, and frequency...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040091
EISBN: 978-1-62708-300-3
... and interface heat transfer coefficients would need to be specified. Material data at elevated temperatures would be required for the tools and the workpiece. The die stress analysis procedure is described in Chapter 16 on process modeling in impression die forging. Processor This is the main operation...