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carburized part

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770171
EISBN: 978-1-62708-337-9
... Abstract This chapter familiarizes readers with tempering and refrigeration treatments and their effect on case-carburized parts. It explains how tempering makes such parts easier to machine, more structurally and dimensionally stable, and more durable in certain applications. It identifies key...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130177
EISBN: 978-1-62708-284-6
... % Material quality and forming 0.8 Design 6.9 Service-related causes 74.7 Manufacturing 1.4 Heat treatment 16.2 Palaniradja et al. reported that 10 to 12% of carburized parts are rejected due to various process-related defects (Ref 8) . To examine this in more detail, they conducted...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770199
EISBN: 978-1-62708-337-9
... Abstract Mechanical treatments such as grinding and shot peening are often employed in the production of case-carburized parts. Grinding, besides restoring precision, removes carbide films, internal oxidation, and high-temperature transformation products. Shot peening strengthens component...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240395
EISBN: 978-1-62708-251-8
... the inner core during heat treatment. The end result is a hard, wear-resistant surface with a tough inner core. This process, called carburizing, is one of several case-hardening processes. Another case-hardening process is nitriding. Since nitriding is done at a lower temperature, the part is...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440283
EISBN: 978-1-62708-262-4
... Abstract The results of certain heat treating processes must be verified for case quality and case depth by destructively sectioning a part or parts that were subjected to the process. Test coupons or test pins are often used for diffusion processes such as carburizing, carbonitriding...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770051
EISBN: 978-1-62708-337-9
.... Data for 3%NiCr steel are experimental; data for 8620 steel are estimated. Source: Ref 12 , 13 Cooling rates employed for carburized parts, ranging from a slow pit cooling to a standard quench, are fast compared with cooling rates for the equilibrium condition; consequently, the equilibrium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080097
EISBN: 978-1-62708-304-1
... predicted. Fig. 5.4 Stability diagram of Fe-C-O system at 870 °C (1600 °F). Source: Ref 16 Fig. 5.5 (Part 1) Stability diagrams of Cr-C-O system at (a) 620 °C (1150 °F), (b) 870 °C (1600 °F), and (c) 1090 °C (2000 °F). Source: Ref 16 Fig. 5.5 (Part 2) (c) 1090 °C (2000 °F...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720393
EISBN: 978-1-62708-305-8
... Growth or shrinkage during carburizing, nitriding, or neutral hardening Shrinkage during tempering Growth during steam blackening Parts manufacturers must be familiar with the amount of dimensional changes to expect for the materials and equipment in use so that tooling can be produced that...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410499
EISBN: 978-1-62708-265-5
...%, and it is desired to reduce surface carbon to a lower level, say 0.9%. This step in a carburizing cycle is referred to as a diffusion step , since much of initially high carbon in the austenite immediately adjacent to the surface diffuses into the interior of the part and produces a deeper case...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560361
EISBN: 978-1-62708-291-4
... specified, a value that can be attained with a carbon content of only about 0.5% ( Fig. 9.18 (Part 6) l ). This value is likely to be exceeded in practical carburizing treatments but, at least in gas carburizing, the surface carbon content can subsequently be reduced to a more desirable level by a diffusion...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770011
EISBN: 978-1-62708-337-9
... measures. bending fatigue gas carburizing hardenability internal oxidation microstructure oxygen content surface hardness transformation products wear resistance The presence of internal oxidation at the surfaces of parts that are case hardened by pack or gas carburizing has been known...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410551
EISBN: 978-1-62708-265-5
... carburizing produces very uniform case depths, even in parts with irregular surfaces ( Ref 22.17 , 22.20 ). This uniformity is caused by the glow discharge plasma that closely envelops the specimen surface, provided recesses or holes are not too small ( Ref 22.20 ). Also, because plasma carburizing is...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130087
EISBN: 978-1-62708-284-6
... Abstract This chapter reviews various ways to classify failure categories and summarizes the basic types, causes, and mechanisms of damage, with particular consideration given to whether the likelihood of the types of damage can or cannot be influenced by the heat treating of steel parts. The...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130395
EISBN: 978-1-62708-284-6
... for proper corrosion resistance (Ref 2) . Powder metallurgy parts with relatively low combined carbon contents of up to 0.20 wt% can be carburized by conventional pack or gas methods. Liquid carburizing is not recommended because of the difficulty of washing the parts free of salt. Gas...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440141
EISBN: 978-1-62708-262-4
... are discussed. carbonitriding carburizing case hardening nitriding nitrocarburizing steel CASE HARDENING—the production of parts that have hard, wear-resistant surfaces, but with softer and/or tougher cores—can be accomplished by two distinct methods. One approach is to use a grade of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220273
EISBN: 978-1-62708-259-4
... recording thermocouple is never an easy task. To have stability along the heat treatment time and in the whole furnace volume is even more complex. Performing furnace surveys to evaluate temperature homogeneity (along the furnace dimensions and along the heating and holding times) is an essential part of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740271
EISBN: 978-1-62708-308-9
... appropriate for carburized parts, such as splined shafts, cams, and gears, because these parts generally are more difficult to grind, more costly to fabricate, and are made to closer dimensions than are parts made of through-hardening steels. The limitation of section thickness or mass must be considered...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770037
EISBN: 978-1-62708-337-9
... Characteristics of the Reduction-Decarburization-Carburization of an Atomized Cast Iron Powder in Converted Gas , Sov. Powder Metall. Met. Ceram. , Vol 23 ( No. 2 ), Feb 1984 , p 102 – 107 10.1007/BF00792259 Severe decarburization of case-hardened parts occurs only...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140189
EISBN: 978-1-62708-264-8
... controlled, thereby setting the carbon potential to any desired level up to the maximum possible for austenite, which is given by the A cm composition, for example, 1.3% C at 927 °C (1700 °F). For reasons to be explained subsequently, it is desirable to fix the surface composition of carburized parts at...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770077
EISBN: 978-1-62708-337-9
... carburized components where measurements of each were made at the surface and at a depth of 0.375 to 0.5 mm (0.015 to 0.020 in.) from the surface. Calculated values are also shown. Macrostraining can occur during cooling from the austenitic condition. During the quench of a carburized part...