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radiant-tube heating

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Published: 01 November 2010
Fig. 11 Work zone of radiant-tube heating 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
... and continuous furnaces. The heating methods, such as direct-fired heating, radiant-tube heating, and electrical heating, are also discussed. Furnace temperature control is essential to ensure quality heat treatment. The article explains the operating procedure of the automatic temperature controllers used...
Image
Published: 01 January 1994
Fig. 13 Temperature and time data for an intermittent furnace. Difference in temperature between two sheet steel parts during a 10 min firing cycle at 825 °C (1520 °F) in a 4.9 m (16 ft) intermittent furnace with radiant-tube heating. Indicating thermocouple was 710 mm (28 in.) below the top More
Image
Published: 30 September 2014
Fig. 12 U-shaped radiant tubes. (a) Fabricated from heat-resistant alloy. (b) Silicon carbide tube More
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Published: 30 September 2014
Fig. 15 Heat transfer from radiant tubes More
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
..., and drive and idler drums. The article also reviews the material characteristics of silicon/silicon carbide composite and reaction-bonded silicon carbide as used in radiant tubes. chemical composition furnace parts heat-resistant alloys heat-treating furnaces high-temperature corrosion industrial...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001269
EISBN: 978-1-62708-170-2
.... Unreduced oxide is brittle and, if left on the strip, will result in poor coating adherence. Oxidizing furnaces usually preheat the strip to approximately 480 °C (900 °F). This temperature, which is somewhat arbitrary, depends on the uniformity of heating and the reducing capability of the radiant-tube...
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Published: 01 December 1998
with an inert gas atmosphere. Radiant tube is used for heating and cooling. More
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Published: 30 September 2014
of the oil with an inert gas atmosphere. Radiant tube is used for heating and cooling. Source: Ref 2 More
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
... (indirect heating, e.g., radiant burner tube, radiant panel, muffle). In indirect-fired furnaces, the working chamber is fed with a separately generated atmosphere. Two of the most common types of atmosphere generators are exothermic and endothermic generators. Exothermic generators combust gas using...
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
... as it flows through the electric tube furnace/melter to the nozzle, this will make it more viscous, so Williams's invention adds induction coils along the path of the flowing glass to better control the viscosity of the glass. He proposed using a resistance heated silicon carbide (SiC) tube and melting...
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
... body to another by electromagnetic wave motion. The transmission of radiant energy does not require a carrying medium. The basic law of heat conduction, proposed by Fourier, states that the rate of heat flow in a material is proportional to the area perpendicular to heat flow and the temperature...
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
... by electromagnetic wave motion. The transmission of radiant energy does not require a carrying medium. The basic law of heat conduction, proposed by Fourier, states that the rate of heat flow in a material is proportional to the area perpendicular to heat flow and the temperature gradient at that section...
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...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003198
EISBN: 978-1-62708-199-3
... is recommended, each has proved adequate, although service life varies in Retorts, muffles, radiant RA 330 HK different installations because of differences in tubes, structural parts HT exposure conditions. 800H/800HT HU Pier caps, rails HR- 120 HX Trays and Grids. Many parts to be heat treated Trays, baskets...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
... applications for ceramics that make use of wear resistance include dies for hot extrusion of metal rods and tubes, inserts for tablesetting, and paper lapping dies, seals, and bearings. Wear can be organized into two categories: impingement wear and rubbing wear. Impingement wear involves particles...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005923
EISBN: 978-1-62708-166-5
.... The unit contains combined heating and cooling elements and a provision for blanketing the surface of the oil with an inert gas atmosphere. Radiant tube is used for heating and cooling. Source: Ref 2 Quench Tank Size The size of a quench tank is dependent on the quenchant, size of parts, weight...
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 Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0005692
EISBN: 978-1-62708-178-8
..., and structure lacks crystalline periodicity; that copy and spark source mass spectrometry. molecules. is, the pattern of its constituent atoms or molecules does not repeat periodically in analytical line. In spectroscopy, the partic- absorptivity. A measure of radiant energy three dimensions. See also metallic...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005261
EISBN: 978-1-62708-187-0
... be interference of the machine platen and the top of the furnace. When an intermediate tube is used, it should be kept as short as possible, and it is imperative to incorporate some external heating to avoid metal freezing in the tube. Fiber gaskets are normally used between any junctions in the stalk tube...