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conduction heating

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Published: 01 June 1983
Figure 4.5 Heat conduction mechanisms. The total conduction in solids is the sum of the above components. Types of material exhibiting each mode of conduction are indicated. More
Image
Published: 01 December 1995
Fig. 27-13 Variation of thermal conductivity with temperature for austenitic cast heat-resistant high alloy steels ( 10 ) More
Image
Published: 01 June 1983
Figure 4.7 Resistance to electronic heat conduction: temperature dependencies and imperfection (defect) densities progressing from pure, annealed metals to highly alloyed metals. More
Image
Published: 01 January 2000
Fig. 3 Design to prevent localized cooling. In the poor design (a), the uninsulated steel support conducts heat, which causes a cool area on the steel shell. In (b), the steel support is insulated to prevent temperature decrease More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050009
EISBN: 978-1-62708-311-9
... tend to be confined to the outer surface of the workpiece, a phenomenon known as the skin effect. The chapter includes several data plots showing how the depth of heating varies with frequency and how heating time, power density, and thermal conduction rate correspond with hardening depth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
... ( Ref 7.11 ). The tool is connected to a hydraulic press equipped with load cells for measuring the punch force, F p , and the blank holder force, F BH , during the test. The sheet samples are heated in a furnace. The tests were conducted without applying blank holder force in the flange area...
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 March 2006
DOI: 10.31399/asm.tb.pht2.t51440159
EISBN: 978-1-62708-262-4
... hardening . The workpiece is immersed either fully or selectively in a high-conductivity heating medium such as a fluidized bed or a salt bath, but only long enough to completely heat the outer layers. If the part is round (wheels or gears) and the requirement is that only the outer diameter (OD...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860133
EISBN: 978-1-62708-348-5
... heat-flow apparatus. Thermal grounding is indicated by Δ. Figure 4.7 Resistance to electronic heat conduction: temperature dependencies and imperfection (defect) densities progressing from pure, annealed metals to highly alloyed metals. Figure 4.6 Electrical analog of thermal...
Book Chapter

By Kenneth A. Walsh
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230001
EISBN: 978-1-62708-298-3
... range [ Stonehouse and Marder 1990 ]. Beryllium also is an excellent addition for developing specific alloy properties, particularly copper-beryllium alloys. The high specific heat, high thermal conductivity, low density, high melting point, and rigidity of the metal aroused substantial interest among...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240303
EISBN: 978-1-62708-251-8
... Table 17.1 Physical properties of some metals at room temperature Metal Density, g/cm 3 Specific heat capacity ( C p ), kJ/kg · K Coefficient of linear thermal expansion, μm/m · K Thermal conductivity, W/m · K Electrical resistivity, nΩ · m Aluminum 2.6989 0.900 22.8 247 26.2...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200404
EISBN: 978-1-62708-354-6
... Abstract This chapter describes the physical properties of steels used for castings. The properties covered include density, modulus of elasticity, Poisson's ratio, shear modulus, thermal expansion, thermal conductivity, specific heat, thermal diffusivity, electrical resistivity, and magnetic...
Image
Published: 01 June 1988
Fig. 9.12 Illustration of the application of susceptors for heating electrically nonconductive fluids flowing through ceramic or glass pipes. The susceptors are heated by induction, and the fluid by conduction of heat from the susceptors More
Image
Published: 01 June 1983
Figure 4.4 Heat transport mechanisms. Whereas relatively simple expressions can be given for heat transfer by conduction and radiation, convection is dependent on fluid specific heat, its rate of motion, temperature difference, as well as boundary layer phenomena. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050317
EISBN: 978-1-62708-311-9
... of the time the coil design prevents the uses of a wall thickness that is less than ideal. Thinner wall thickness is sometimes needed on high-power-density coils because the copper itself cannot conduct heat fast enough to the cooling water to prevent overheating. When this occurs, the wall thickness must...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730059
EISBN: 978-1-62708-283-9
... electrons that are free to move about the lattice, accounting for high electrical conductivity. Metals have high thermal conductivities because the free movement of electrons allows them to transfer heat. Electrical conductivity decreases with anything that disturbs the periodicity of the lattice, including...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440055
EISBN: 978-1-62708-262-4
... Abstract This chapter, a detailed account of furnaces and related equipment for heat treating, begins by describing three basic modes of heat transmission, namely conduction, convection, and radiation, followed by a discussion on the working principle, applications, advantages...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260029
EISBN: 978-1-62708-336-2
... simultaneously right from the start of extrusion. Some of the generated heat remains in the extruded metal, some is transmitted to the container and die, and some even increases the temperature of the part of the billet that is not yet extruded. The process of heat conduction through the billet during extrusion...
Image
Published: 01 July 2009
Fig. 4.27 Thermal conductivity of beryllium as a function of temperature. □: data from 322 to 672 K, listed as as-received condition with a density of 1.829 g/cm 3 ; Δ: 322 to 72 K, as previously described plus heat treated to above 700 °C; ◊: 322 to 672 K, listed as as-received condition More
Image
Published: 01 December 1995
Fig. 27-12 Variation of thermal conductivity with temperature for ferritic and austenitic heat-resistant cast high alloy steels ( 10 ) More