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radiant heat transfer

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Published: 30 September 2014
Fig. 15 Heat transfer from radiant tubes More
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005529
EISBN: 978-1-62708-197-9
... heating electrical heating heat flow simulation heat transfer properties heat treatment heating heat-source model heat-transfer model radiant-tube heating THE FIRST STEP IN EVERY HEAT TREATING PROCESS is heating the parts to the desired temperature. The heating process takes valuable time...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005350
EISBN: 978-1-62708-187-0
... radiant heat (a highly efficient method of transferring heat into aluminum), where the heat source (burners) is located 46 to 61 cm (18 to 24 in.) off the bath for best practices. The closer the heat source is to the aluminum, the faster the transfer of Btus. The temperature differential between...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005930
EISBN: 978-1-62708-166-5
... equipment nonferrous metals radiant heat transfer radiant tubes silicon carbide Introduction High-temperature furnaces usually have an outer metallic shell with an interior lined with ceramic refractories for thermal insulation. Heat-treating furnace accessories also include trays, baskets, pots...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005449
EISBN: 978-1-62708-196-2
... are also classified as convection heat transfer. All bodies emit radiant energy. An ideal radiator, called a black body, emits radiant energy at a rate proportional to the fourth power of the absolute temperature of the body. This is known as Stefan-Boltzmann law of thermal radiation. Other surfaces...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005993
EISBN: 978-1-62708-166-5
... as convection heat transfer. All bodies emit radiant energy. An ideal radiator, called a black body, emits radiant energy at a rate proportional to the fourth power of the absolute temperature of the body. This is known as Stefan-Boltzmann law of thermal radiation. Other surfaces, such as a glossy painted...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001399
EISBN: 978-1-62708-173-3
... to block the gas from impinging on adjacent areas or on a component body directly. Common nozzle materials are stainless steel or quartz glass. Gas Flow Rates Gas flow rates primarily determine heat transfer efficiency (that is, the temperature and heating rate of the workpiece) and may affect...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001395
EISBN: 978-1-62708-173-3
... reflow soldering method. A fluid that has a boiling point higher than the solder melting point is heated and the vapor is contained in a chamber, through which the PWB assembly is passed. Heat transfer is achieved through the heat of vaporization released by the fluid as it condenses on the PWB surface...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005911
EISBN: 978-1-62708-167-2
... glass within a segment of a continuous melting tank. In one patent he suggests using induction as the energy source to directly heat glass in a secondary vessel/chamber, after initially melting the glass batch by radiant heat transfer such as with combustion ( Ref 15 ). The second vessel acts...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005957
EISBN: 978-1-62708-166-5
...), application, heating method, mode of heat transfer, type of materials handling system, and mode of waste heat recovery (recuperation and regeneration). It provides information on uniform temperature distribution, the general requirements and selection criteria for insulation materials, as well as the basic...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005835
EISBN: 978-1-62708-167-2
... properties radiant heat transfer thermal conductivity Induction heating is a combination of several interrelated physical phenomena, which includes, but is not limited to, heat transfer, electromagnetics, and metallurgy. Physical properties of heated materials are complex functions of these phenomena...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
... Abstract Structural applications for advanced ceramics include mineral processing equipment, machine tools, wear components, heat exchangers, automotive products, aerospace components, and medical products. This article begins with an overview of the wear-resistant applications...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006914
EISBN: 978-1-62708-395-9
... or structure, is characterized ( Ref 6 ). The following discussion considers the burning process on a macroscale, where it comprises heating, decomposition, ignition, combustion, and propagation ( Ref 7 ). The rate of heat release is dependent on the speed at which combustion occurs and other heat transfer...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005352
EISBN: 978-1-62708-187-0
... that the burners above the melt transfer more radiant heat to the surface of the melt. If the surface temperature becomes hotter than the lower parts of the bath, then the heat transfer for melting become less efficient in reverberatory furnaces. Other nonferrous alloys, such as zinc, magnesium, and copper, also...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003029
EISBN: 978-1-62708-200-6
... that drip, melt, or disintegrate. Fig. 2 The Steiner tunnel furnace used to evaluate the flame spread of materials in ASTM E 84. Source: Ref 13 ASTM E 162, “Standard Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source” ( Ref 14 ), uses a refractory panel...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005230
EISBN: 978-1-62708-187-0
... (<italic>h</italic>) ranges for various heat treatment furnaces Table 2 Relative heat-transfer coefficient ( h ) ranges for various heat treatment furnaces Heating medium or furnace type h , Wm −2 K −1 Lead 1200–1800 Salt bath 500–1200 Fluidized bed 500–700 Radiant fluidized bed...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005814
EISBN: 978-1-62708-165-8
... Abstract This article describes the mechanisms and characteristics of heat transfer in the quenching of steel. This article describes the characterization of boiling heat transfer, including pool boiling, forced convective boiling, and rewetting, which plays a key role in defining the heat...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003322
EISBN: 978-1-62708-176-4
... such as Young's modulus and workability data can also be obtained from these tests. Data reduction procedures, such as temperature correction and fitting to constitutive equations, are provided. Finally, testing for interfacial properties such as the friction coefficient and heat-transfer coefficient...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005501
EISBN: 978-1-62708-197-9
... applications are presented. casting casting defects ductile cast iron hot tearing macrosegregation microstructure porosity solidification thermophysical properties CASTING AND SOLIDIFICATION PROCESSES are modeled in terms of thermodynamics, heat transfer, fluid flow, stress, defect formation...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001362
EISBN: 978-1-62708-173-3
...), as is that of the GMAW part of the system. The heat of the plasma arc is sufficient to achieve good metal transfer stability for the GMAW element, despite the fact that when this process is used separately, it is almost always used in a direct-current, electrode positive (DCEP) mode. The filler wire is heated...