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heat transfer properties

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
... with integrated cooling channels determines the martensite formation and final part properties. The experimental setup for calculating the contact heat-transfer coefficient between sheet materials and die is shown in Fig. 7.15 . Fig. 7.15 Experimental setup for finding heat-transfer coefficient. Source...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900109
EISBN: 978-1-62708-358-4
..., while doubling the gas pressure increases the blower power only by a factor of two.) The heat-transfer coefficient is also a function of the gas properties. Figure 6-9 shows the effect of four gases on the cooling of 25 mm (1 in.) diam slugs. Nitrogen is usually the gas of choice because...
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...
Image
Published: 01 December 1996
Fig. 4-16 Heat transfer correlations between the position in cylinders and the position on the Jominy bar. (From Metals Handbook , 8th edition, Vol 1, Properties and Selection of Metals , American Society for Metals, Metals Park, Ohio (1961), Ref 9 ) More
Image
Published: 01 December 1996
Fig. 4-15 (Part 1) Heat transfer correlations between the position in cylinders and the position on the Jominy bar. (From Metals Handbook , 9th edition, Vol 1, Properties and Selection: Irons and Steels , American Society for Metals, Metals Park, Ohio (1978), Ref 8 ) More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220241
EISBN: 978-1-62708-341-6
... to heat electrically nonconductive materials through radiation or conduction heat-transfer processes. Flux Concentrators When placed in an induction field, magnetic materials tend to gather the lines of flux. Such materials are said to have high permeability. On the other hand, nonmagnetic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500083
EISBN: 978-1-62708-317-1
... Compared to room-temperature forming, elevated-temperature forming brings many complexities and requires a systematic approach. The incoming material dimensional tolerances and properties, the forming temperature, the interface condition (lubricant/friction and heat transfer), the tool temperature...
Image
Published: 01 December 1996
Fig. 4-15 (Part 2) Heat transfer correlations between the position in cylinders and the position on the Jominy bar. (From Metals Handbook , 9th edition, Vol 1, Properties and Selection: Irons and Steels , American Society for Metals, Metals Park, Ohio (1978), Ref 8 ) Quenching medium More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260029
EISBN: 978-1-62708-336-2
... to the study of heat related to matter in motion. All thermodynamics systems require some energy source and transfer media to carry the heat to raise the temperature in the system. In extrusion, heat is generated by both the frictional work and the work of deformation. Heat generation and transfer take place...
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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290023
EISBN: 978-1-62708-306-5
... is required. Helium , unlike argon, is lighter than air and has a low density. Like argon, it is chemically inert and does not react with other elements or compounds. Because of its high thermal conductivity and high ionization potential, more heat is transferred to the base material, thus enhancing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780064
EISBN: 978-1-62708-281-5
... is that when there is a thickness mismatch between the formed piece and the premachined cavity, nonuniform pressure is produced on the part resulting in nonuniform consolidation. When heating or cooling is desired, the dies usually have such a high heat content that heat-transfer times are long. Finally...
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: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300163
EISBN: 978-1-62708-323-2
... is transferred to the copper. Thus, graphite is really running self-mated. The friction is low, if it was high then there would be excessive heat buildup in the commutator mechanism—which there is not. Similarly, copper/graphite composites are used in high-speed train brakes. These composites are designed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480353
EISBN: 978-1-62708-318-8
...-6Al-2Sn-4Zr-6Mo, and Ti-17 IMI829 and 834, Ti-1100 (see Table 6.9 in this book), and most recently TiAl compositions (see Chapter 6, “Mechanical Properties and Testing of Titanium Alloys” in this book). These forged and heat treated alloys are used for their high-temperature properties and high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
... Appropriate input data describing the thermal and physical properties of die and billet material the heat transfer and friction at the die/workpiece interface under the processing conditions investigated, and the flow behavior of the deforming material at the relatively large strains that occur in practical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130001
EISBN: 978-1-62708-284-6
... transfer, conduction, convection, and radiation, are present during the heat treatment processes. Perhaps the most important physical property of steel to be considered in design is its coefficient of thermal expansion. Most heat treating problems could be solved if this coefficient could be controlled...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120005
EISBN: 978-1-62708-269-3
... (approximately 60% of the density of steel and superalloys) that can be strengthened greatly by alloying and deformation processing. (Characteristic properties of elemental titanium are given in Table 2.1 .) Titanium is nonmagnetic and has good heat-transfer properties. Its coefficient of thermal expansion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
... ), modified cup drawing test ( Ref 3.9 ), and pin-on-disc test ( Ref 3.10 ). Influence of Temperature and Heat-Transfer Coefficients Because the material at elevated temperatures is strain-rate sensitive, the material properties must be considered as a function of temperature and strain rate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430001
EISBN: 978-1-62708-253-2
... by conductive heat transfer. Natural gas boilers employ either atmospheric burners (also known as natural draft burners) or forced draft burners. Both types of boiler can be used for combustion of oil as well as gas because they have some common properties; both contain practically no moisture or ash, and both...