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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770135
EISBN: 978-1-62708-337-9
...Effect of quenching temperature on fatigue strength Table 6.1 Effect of quenching temperature on fatigue strength Quenching temperature, °C Surface hardness, HV Core hardness, HV Case depth to 500 HV Fatigue limit mm 0.001 in. MPa ksi 760 780 235 0.425 17 610 88...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320171
EISBN: 978-1-62708-347-8
... to room temperature that produces the desired properties. Carbonitriding is generally regarded as a modified gas carburizing process, rather than a form of nitriding. This chapter briefly describes the case depth that can be achieved with carbonitriding, how case depth is measured, and the materials...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770001
EISBN: 978-1-62708-337-9
... Theoretically a “safe” gear design can accommodate the presence of an adverse metallurgical feature; however, there may be other adverse factors involved that also erode the difference between the fracture stress and the allowable stress. Fig. 4 Effect of core strength and case depth on the rolling...
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 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320175
EISBN: 978-1-62708-347-8
... be induction hardened and on process details involved in induction hardening gears. It discusses the processes involved in heating, quenching, and tempering of gears. Information on surface hardness and case depth after induction hardening, induction hardening problems, the applications of induction hardening...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350195
EISBN: 978-1-62708-315-7
...Thickness ranges and hardness levels associated with various surface-engineering processes Table 1 Thickness ranges and hardness levels associated with various surface-engineering processes Treatment Substrate Thickness or case depth Hardness, HV Local surface hardened Medium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050215
EISBN: 978-1-62708-311-9
...Rules of thumb for estimating induction heating rates Table 11.6 Rules of thumb for estimating induction heating rates Frequency Case depth Power density Single-shot heat time, s Scanning rate, progressive mm in. kW/cm 2 kW/in. 2 mm/s in./s 3 kHz 3.80 0.150 1.55 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050245
EISBN: 978-1-62708-311-9
... to medium High to medium High Dependent on material composition Very Quite Very Magnetic only Little Ability to automate Good Fair Good Fair Fair Capabilities Thickness gauging; some composition testing Thickness gauging Thickness gauging; grade sorting; case depth hardness Defects...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050313
EISBN: 978-1-62708-311-9
...: Ref 2 Abstract Abstract This appendix illustrates the effect of various operating parameters on the case depth or thickness of scan hardened components. References References 1. Haimbaugh R.E. , Induction Heat Treating Corp. , personal communication, 2001 2. Tocco...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250245
EISBN: 978-1-62708-345-4
..., the typical case depths, and the hardenability of carbonitrided parts. In addition, the chapter also discusses the processes involved in quenching, tempering, and distortion of carbonitrided steels. carbonitriding distortion gears hardenability quenching steel tempering CARBONITRIDING...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250249
EISBN: 978-1-62708-345-4
... or configuration does not lend itself to carburizing and quenching the entire part. This chapter focuses on the processes involved in the induction and flame hardening, covering the applicable materials, hardening patterns, preheat treatment, quenching, tempering, surface hardness, case depth, hardening problems...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560361
EISBN: 978-1-62708-291-4
... with depth in the quenched-and-tempered hypereutectoid steel shown in (a) to (d). (f) Completely ferritic surface layer in a commercial 1% C strip in the quench-hardened condition. 3% nital. 250×. Fig. 12.16 (Part 1) Case carburizing: quench-hardening heat treatments after carburizing. 0.15% C...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320133
EISBN: 978-1-62708-347-8
... the best combination of surface hardness and case depth. At this temperature, NH 3 breaks down into atomic nitrogen and hydrogen according to the following reaction: (Eq 1) 2 N H 3 ↔ 2 N + 3 H 2 The atomic nitrogen slowly penetrates into the steel surface and combines...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250227
EISBN: 978-1-62708-345-4
... and 1065 °F) to produce the best combination of surface hardness and case depth. At this temperature, NH 3 breaks down into atomic nitrogen and hydrogen according to the following reaction: (Eq 1) 2 N H 3 ↔ 2 N + 3 H 2 The atomic nitrogen slowly penetrates...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320159
EISBN: 978-1-62708-347-8
... of ion nitriding for some typical gear materials. Results after ion nitriding of common gear materials Table 7.1 Results after ion nitriding of common gear materials Steel group Core hardness, HRC Nitriding temperature, °C (°F) Surface hardness, 15N scale Total case depth, mm...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240395
EISBN: 978-1-62708-251-8
... produces a wear-resistant high-carbon case on top of a tough low-carbon steel core. Steels used for carburizing usually have carbon contents of approximately 0.2 wt%, with carburized cases containing up to 0.8 to 1.0 wt% C. A simple formula developed by Einstein can be used to predict the case depth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440141
EISBN: 978-1-62708-262-4
...Typical characteristics of case hardening treatments Table 1 Typical characteristics of case hardening treatments Process Nature of case Process temperature, °C (°F) Typical case depth Case hardness, HRC Carburizing Pack Diffused carbon 815–1090 (1500–2000) 125 μm–1.5 mm...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320033
EISBN: 978-1-62708-347-8
... as the tempering temperature increases as shown in Fig. 5.2 . In addition, tempering temperature has a significant effect on core hardness, as illustrated in Fig. 5.3 . Furthermore, higher tempering temperatures reduce both case hardness and case depth. In applications where gears are required to maintain high...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250163
EISBN: 978-1-62708-345-4
...). The surface hardness of quenched gears decreases as the tempering temperature increases as shown in Fig. 3 . In addition, tempering temperature has a significant effect on core hardness, as illustrated in Fig. 4 . Furthermore, higher tempering temperatures reduce both case hardness and case depth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320185
EISBN: 978-1-62708-347-8
... for required case and core properties Known heat treat problems—distortion, growth, and so on Dependable mechanical properties—large field data Materials Feature Sometimes, multiple gears of different geometry and number of teeth are integral on the same shaft. Because case depth requirements...