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fluidized-bed quenching

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Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005794
EISBN: 978-1-62708-165-8
... Abstract The fluidized bed provides a means for exchanging heat between a metal part, the solid particles, and the fluidizing gas and which is viable for quenching. This article briefly considers the design aspects of the gas distributor, plenum, container, immersed cooling tubes and surface...
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Published: 01 August 2013
Fig. 13 Cooling curves for fluidized-bed quenching of a 430 kg (946 lb) H13 hot-work steel die casting tool. T/C, thermocouple. Source Ref 3 More
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Published: 01 August 2013
Fig. 1 Schematic representation of quenching fluidized bed More
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Published: 01 August 2013
Fig. 4 Guide to the range of heat-transfer coefficients for various quench media against fluidized-bed quenching. Source: Ref 2 More
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Published: 01 June 2016
Fig. 34 Comparison of heat-transfer coefficient for water, forced-air, and fluidized-bed quenching More
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Published: 30 November 2018
Fig. 27 Comparison of heat-transfer coefficient for water, forced-air, and fluidized-bed quenching More
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005927
EISBN: 978-1-62708-166-5
..., are also discussed. Finally, the article reviews the principles and applications of fluidized-bed heat treatment. carbonitriding carburizing decarburization fluidized-bed furnaces fluidized-bed quenching gas-fluidized beds hardening heat treatment heat-transfer coefficient nitriding...
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Published: 01 August 2013
Fig. 14 Three-zone fluidized-bed arrangement and quench-temperature ranges. Source Ref 12 More
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005958
EISBN: 978-1-62708-168-9
... Abstract This article provides a detailed discussion on the heating equipment used for austenitizing, quenching, and tempering tool steels. These include salt bath furnaces, controlled atmosphere furnaces, fluidized-bed furnaces, and vacuum furnaces. The article discusses the types of nitriding...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003198
EISBN: 978-1-62708-199-3
... of Fluidized-Bed Furnaces Applications of fluidized-bed furnaces to heat treatment of metals include continuous units for all types of wire and strip processing (such as patenting, austenitizing, annealing, tempering, and quenching); continuous rotary types for fasteners, bearings and other small parts...
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Published: 01 August 2013
Fig. 5 Cooling curve measured at the centerline of an AISI 4140 cylindrical probe quenched in a fluidized bed (alumina plus air at room temperature) and with a fluidization number of 1.4. Source Ref 31 More
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
... to avoid distortion and excessive residual stress. This can be achieved by using water at temperatures between 70 and 85 °C (160 and 185 °F), boiling water, polyalkylene glycol, fluidized beds, forced air, and so on. The most common approach is to add polyalkylene glycol to the quench medium in varying...
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Published: 01 December 2009
Fig. 38 Measured and calculated temperature history during quenching of small box-shaped dies in a fluidized bed More
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Published: 01 August 2013
Fig. 5 Effect of alumina grain size on cooling rates for 50 mm (2 in.) diameter and 100 mm (4 in.) length steel samples quenched in an ambient-temperature fluidized bed. Source: Ref 1 More
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Published: 01 December 2009
Fig. 39 Calculation of distortion in a ring-shaped die (top) and a small box-shaped die (bottom) after quenching in a fluidized bed. Distortion results are enlarged 100 times for the ring-shaped die and 50 times for the small box-shaped die. More
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006506
EISBN: 978-1-62708-207-5
... Abstract The fundamental objective of quenching is to preserve, as nearly as possible, a metastable solid solution formed at the solution heat treating temperature, by rapidly cooling to some lower temperature, usually near room temperature. This article provides an overview of the factors used...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005773
EISBN: 978-1-62708-165-8
.... It details the growth process and nucleation process of carbide and nitride coatings formed on the metal surface. The article discusses the advantages, disadvantages, and characteristics of the various coating processes, including high-temperature salt bath carbide coating, high-temperature fluidized-bed...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006260
EISBN: 978-1-62708-169-6
... Abstract Quenching refers to the rapid cooling of metal from the solution treating temperature, typically between 465 and 565 deg C (870 and 1050 deg F) for aluminum alloys. This article provides an overview on the appropriate quenching process and factors used to determine suitable cooling...
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
... Salt bath Fluidizing bed Application Heat treating (harden and temper) Age hardening Quenching Tempering Annealing Solution treatment Normalizing Stress relieving Brazing Carburizing Carbonitriding Nitriding Ferritic nitrocarburizing...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006007
EISBN: 978-1-62708-172-6
... the dust-collection and recycling system. That moisture needs to be removed before application, and dry air quickly removes the absorbed moisture. For best results, the dewpoint of transport and fluidized-bed air should be −40 °C (−40 °F) or lower at pressure. Achieving that dewpoint requires the use...