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spray quenching
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Series: ASM Handbook
Volume: 4F
Publisher: ASM International
Published: 01 February 2024
DOI: 10.31399/asm.hb.v4F.a0007012
EISBN: 978-1-62708-450-5
... Abstract Spray quenching (or jet impingement) is the most common technique employed to improve the uniformity of heat removal and break the vapor layer, allowing for a high cooling rate to be achieved. This article presents the heat transfer characteristics of quenching a hot surface, which can...
Abstract
Spray quenching (or jet impingement) is the most common technique employed to improve the uniformity of heat removal and break the vapor layer, allowing for a high cooling rate to be achieved. This article presents the heat transfer characteristics of quenching a hot surface, which can be expressed by the boiling and quench curve. It discusses three major spray parameters that have a substantial role in the quantification of spray cooling performance: droplet size, droplet velocity, and volumetric flux. The article also presents the available models and correlations to predict the cooling rate in spray quenching of hot surfaces during different boiling phases. It then discusses the effect of surface roughness on spray cooling performance.
Book Chapter
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005816
EISBN: 978-1-62708-165-8
... Abstract Spray quenching refers to a wide variety of quenching processes that involve heat removal facilitated by the impingement of a quenchant medium on a hot metal surface. This article provides information on the basic concepts of spray quenching, and discusses the most commonly used...
Abstract
Spray quenching refers to a wide variety of quenching processes that involve heat removal facilitated by the impingement of a quenchant medium on a hot metal surface. This article provides information on the basic concepts of spray quenching, and discusses the most commonly used techniques in quench tank agitation to establish uniformity of the quenched part. Common techniques include quenchant stirring, quenchant circulation, and submerged jet/spray mixing. The article also describes the effect of quenching agitation and reviews heat-transfer characteristics of immersion quenching and spray quenching with water.
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Published: 09 June 2014
Fig. 2 Individual phases in induction heating and spray quenching in the workpiece surface layer and corresponding temperature-diameter diagrams. Source: Ref 3 , 4 , 16
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Published: 30 September 2014
Fig. 6 Quench chute systems employing pumps or submerged spray quenching systems. (a) Single upflow. (b) Multiple spray. (c) Multiple submerged sprays. (d) Immersion time continuous quench system. Source: Ref 5
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Published: 01 November 2010
Fig. 44 Computer simulation of (a) temperature profiles during spray quenching of a crankshaft journal and (b) prediction of austenite transformation. Courtesy of Deformation Control Technology, Inc.
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Published: 01 November 2010
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Published: 01 February 2024
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Published: 01 February 2024
Fig. 110 Experimental setup for testing of induction-hardening spray quenching parameters. Source: Ref 317
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Published: 01 February 2024
Fig. 6 Quench chute systems employing pumps or submerged spray quenching systems. (a) Single up-flow. (b) Multiple spray. (c) Multiple submerged sprays. (d) Immersion time continuous quench system. Adapted from Ref 2 , 5
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Published: 01 February 2024
Fig. 23 Comparison of immersion and spray quenching with a mineral oil and an aqueous polymer. Note: Curves 1 and 3: immersion quench at 1.25 m/s (4.1 ft/s); curves 2 and 4: spray quench velocity = 1.2 m/s (3.9 ft/s)
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Published: 01 February 2024
Fig. 32 Surface heat-transfer coefficient, α, for spray quenching using plain water as a function of the surface temperature of a steel specimen and the water flow parameter, M (m 3 /(s ⋅ m 2 ). Parameter M represents the ratio of the amount of liquid quenchant, such as water (m 3 /s
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Published: 01 February 2024
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Published: 01 February 2024
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Published: 01 August 2013
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in Modeling and Simulation of Stresses and Distortion in Induction Hardened Steels
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 15 Heat transfer coefficient data for PAG-water solution used to spray quench cylinder in Fig. 14 . Source: Ref 10
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in Modeling and Simulation of Stresses and Distortion in Induction Hardened Steels
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 44 Predicted residual hoop stress for spray quenched cylinder in Fig. 43 for different spray quench heat transfer coefficients
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in Modeling and Simulation of Stresses and Distortion in Induction Hardened Steels
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 49 Predicted phase fraction for cylinder in Fig. 48 at a spray quench intensity of 25 kW/m 2 · K
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Published: 09 June 2014
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in Modeling and Simulation of Steel Heat Treatment—Prediction of Microstructure, Distortion, Residual Stresses, and Cracking
> Steel Heat Treating Technologies
Published: 30 September 2014
Fig. 48 (a) Schematic of scan induction hardening and spray quench. (b) Distribution of martensite and residual stresses at the end of inner diameter (ID) and (c) outer diameter (OD) hardening processes. Source: Ref 93
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Published: 01 February 2024
Fig. 77 Oliveira et al. air-water spray quench test system. (a) Overall arrangement. (b) Test piece geometry. Source: Ref 224
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