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vacuum carburizing

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Published: 09 June 2014
Fig. 49 Surface heat treatment conditions showing (a) vacuum carburizing and (b) contour refining condition. Source: Ref 48 More
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Published: 01 October 2014
Fig. 28 Effect of density on case depth in vacuum-carburized iron-copper alloy. Source: Ref 28 More
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Published: 30 September 2014
Fig. 20 Manufacturing chain of vacuum-carburized gear blanks. Source: Ref 83 More
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Published: 01 January 1996
Fig. 20 S-N curves of vacuum-carburized 8620 and EX 24 (0.89% Mn, 0.24% Mo, 0.55% Cr) steels. The lower curves were obtained from specimens subzero cooled to −196 °C and the upper curves were obtained from specimens not subjected to subzero cooling. Source: Ref 31 More
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Published: 30 September 2014
Fig. 19 Schematic of a vacuum gas carburizing furnace More
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Published: 01 August 2013
Fig. 7 Vacuum systems for the low-pressure carburizing process. (a) Treatment chamber as part of a multichamber system. (b) View into a single-chamber furnace More
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Published: 01 December 1998
Fig. 8 Carbon gradient profile of atmosphere, vacuum, and plasma carburizing of AISI 8620 steel at 980 °C (1800 °F) saturation conditions for 30 min and followed by direct oil quenching. More
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Published: 01 January 1997
Fig. 15 Carbon gradient profile of atmosphere, vacuum, and plasma carburizing of AISI 8620 steel at 980 °C (1800 °F) saturation conditions for 30 min and followed by direct oil quenching. Source: Ref 81 More
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005784
EISBN: 978-1-62708-165-8
... Abstract A wide variety of stop-off technologies for heat treatment are used to selectively prevent the diffusion of carbon and/or nitrogen during atmosphere carburizing, carbonitriding, vacuum carburizing, and various forms of nitriding. In addition to selective stop-off, technologies are also...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005955
EISBN: 978-1-62708-166-5
... and devices for measuring thermal and electrical conductivity. The article also describes the applications of the vacuum heat treating process, namely, vacuum nitriding and vacuum carburizing. Finally, it reviews the heat treating process of tool steels, stainless steels, Inconel 718, and titanium and its...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005811
EISBN: 978-1-62708-165-8
... the steel. This article introduces the fundamentals, types, advantages and limitations, and the complications of various forms of carburizing, namely, pack carburizing, liquid carburizing or salt bath carburizing, gas carburizing, and low-pressure (vacuum) carburizing. The related process of carbonitriding...
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Published: 01 October 2014
Fig. 13 Comparison of microhardness profiles at pitch line and tooth root for (a) atmosphere-carburized and oil-quenched, (b) vacuum-carburized and oil-quenched, and (c) vacuum-carburized and high-pressure gas-quenched AISI 8620 gears. Source: Ref 18 More
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Published: 01 December 1998
Fig. 41 Hardness, in terms of the Vickers hardness number, versus depth below the surface for three P/M steels following vacuum carburization at 925 °C (1695 °F). The higher the porosity the deeper the carbon penetration because of permeation through the open pore network. Below approximately More
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Published: 30 September 2014
Fig. 20 Plot of temperature and pressure versus time for a typical vacuum carburizing process with a reheating cycle More
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Published: 01 December 1998
Fig. 7 Plot of temperature and pressure versus time for a typical vacuum-carburizing process with a reheat cycle More
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Published: 09 June 2014
Fig. 50 Retained austenite profiles below the surface of the tooth root. VC, vacuum carburizing; DSP, double shot peening; CIH, contour induction hardening. Source: Ref 48 More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003197
EISBN: 978-1-62708-199-3
..., carbon and hardness gradients, and process procedures of different types of case hardening methods: carburizing (gas, pack, liquid, vacuum, and plasma), nitriding (gas, liquid, plasma), carbonitriding, cyaniding and ferritic nitrocarburizing. An accurate and repeatable method of measuring case depth...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005771
EISBN: 978-1-62708-165-8
... for carbon, is the stable crystal structure. With grades of steel engineered to resist grain coarsening at high temperatures and properly designed furnaces such as vacuum furnaces, carburizing above 980 °C (1800 °F) is practical to dramatically reduce carburizing time. Hardening is accomplished when the high...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005987
EISBN: 978-1-62708-168-9
... 445 830 EX 55 900–950 1650–1750 830 1525 870 1600 900–930 1650–1700 815–840 1500–1550 420 790 M s is the temperature at which martensite forms. Source: Ref 3 Gas carburizing can be carried out in a sealed-quench batch furnace, a continuous furnace, or a vacuum furnace...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005813
EISBN: 978-1-62708-165-8
... is often referred to as vacuum carburizing. As with all case-hardening processes, the goal is to obtain a part with a solid, tough core and a hard, wear-resistant surface. It is applied to increase the fatigue limit of dynamically loaded components. Typical applications include gear parts, machine...