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Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005774
EISBN: 978-1-62708-165-8
... Abstract Intensive quenching (IQ) is an alternative method of hardening steel parts, providing extremely high cooling rates within the martensite-phase formation temperature range. This article begins with the description on the general correlation between steel mechanical properties...
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Published: 01 August 2013
Fig. 14 Distortion of keyway shaft during intensive quenching and quenching in oil More
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Published: 01 August 2013
Fig. 3 Temperature and structural conditions during intensive quenching of 25 mm (1 in.) diameter rod made of 1045 steel More
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Published: 01 August 2013
Fig. 7 Typical cooling curves at surface and core during intensive quenching processes (IQ-2 and IQ-3). Ac 3 , austenitizing temperature; T s , quenchant saturation temperature (100 °C, or 212 °F); T m , water or water/salt solution temperature (usually 20 °C, or 68 °F) More
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Published: 01 August 2013
Fig. 15 Batch-type intensive quenching (IQ) system with stand-alone IQ water tank. Courtesy, Akron Steel Heat Treating Co. More
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Published: 01 August 2013
Fig. 16 Integral quench atmosphere furnace equipped with intensive quenching water tank. Source: Reprinted from Ref 3 with permission of ASTM International More
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Published: 01 August 2013
Fig. 17 Schematic of continuous-type intensive quenching system. I, loading point for steel parts onto the conveyor for heating in furnace HT1; II, chute with intensive cooling devices; III, quenching tank with two conveyors; IV, unloading point of steel parts from furnace HT2; TR1 to TR5 More
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Published: 01 August 2013
Fig. 18 Layout of typical single-part intensive quenching system. 1, water tank; 2, water pump; 3, stationary upper section of vertical quench chamber; 4, movable loading lower section of quench chamber; 5, air cylinders that move lower section up and down; 6, part to be quenched; 7 and 8, two More
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Published: 01 August 2013
Fig. 19 Single-part production intensive quenching system for processing helicopter gears up to 200 by 480 mm (8 by 19 in.) diameter. Source: Ref 25 More
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Published: 01 August 2013
Fig. 20 Single-part production intensive quenching system for processing long shafts up to 50 mm (2 in.) diameter and 915 mm (36 in.) long. Source: Ref 25 More
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Published: 01 August 2013
Fig. 2 General correlation between steel mechanical properties and cooling rate during quenching. IQ, intensive quenching. Source: Ref 4 More
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Published: 01 August 2013
Fig. 5 Distribution of residual hoop stresses in 25 mm (1 in.) diameter rod made of 1045 steel after intensive quenching and after quenching in oil More
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Published: 01 August 2013
Fig. 8 Microstructure for 19 mm (0.75 in.) diameter rod made of 1045 steel after (a) intensive quenching and (b) oil quenching. Original magnification: 250×. Source: Ref 16 More
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Published: 30 September 2014
Fig. 6 Cross section contour map of residual stress in single-tooth bending in unloaded and loaded conditions. (a) Oil-quenched gear. (b) Intensive-quenched gear. Source: Ref 78 More
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Published: 30 September 2014
Fig. 10 Local heat transfer coefficient values on the surface of the gear (a) at beginning, and (b) at end of intensive quenching process. (c) Generation of warping distortion at different times during quenching. CFD, computational fluid dynamics. Source: Ref 108 More
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Published: 01 August 2013
Fig. 13 Residual surface stresses for automotive pinion made of 1018 and 8620 steels. IQ, intensive quenching More
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Published: 01 August 2013
Fig. 9 Hardness distribution for test samples made of AISI 1018, 4320, 5120, and 8620 steels. IQ, intensive quenching. Source: Ref 16 More
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Published: 01 August 2013
Fig. 12 Residual surface stresses for 32 mm (1.3 in.) diameter bars made of 1018 and 8620 steel. IQ, intensive quenching. Source: Ref 16 More
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005935
EISBN: 978-1-62708-166-5
... the workpiece rapidly increases. At lower temperatures, where boiling is completed, a third stage of convective cooling occurs at the interface. The three stages are characterized by different modes of heat transfer, which contribute to different cooling intensities. The local distribution during quenching...
Series: ASM Handbook
Volume: 4F
Publisher: ASM International
Published: 01 February 2024
DOI: 10.31399/asm.hb.v4F.a0006999
EISBN: 978-1-62708-450-5
... are characterized by different modes of heat transfer, which contribute to different cooling intensities. The local distribution during quenching of these three cooling stages mainly determines the heat transfer from the workpiece into the quenching medium. With real workpiece shapes, it often occurs during heat...