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bending fatigue strength

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250039
EISBN: 978-1-62708-345-4
... characteristics of gear steels and the bending fatigue strength and properties of carburized steels are reviewed. In addition to wrought steels, the chapter provides information on the other iron-base alloys that are used for gears, namely cast carbon and alloy steels, gray and ductile cast irons, powder...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770171
EISBN: 978-1-62708-337-9
... amount of retained austenite content in the carburized case). Source: Ref 31 Fig. 7.13 Effect of tempering temperature on the alternating bending fatigue strength of 6 mm diam case-hardened test pieces. Carburized at 930 °C for 1 h, water quenched, reheated to 850 °C for 10 minutes, and oil...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770135
EISBN: 978-1-62708-337-9
...-hardening steels. Source: Ref 45 Fig. 6.38 Alternating bending fatigue strength of carburized test pieces in relation to case depth and section ratio. (a) 6 mm diam. (b) 12 mm diam. Source: Ref 40 Fig. 6.30 Effect of nickel content and case depth on the bending fatigue strength...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770199
EISBN: 978-1-62708-337-9
.... Source: Ref 31 Fig. 8.30 Effect of shot peening on residual macrostress distributions in a carburized surface (initially with tensile residual stress at the surface). Source: Ref 32 Fig. 8.34 Effect of saturation time on the bending fatigue strength of pinion teeth (pack...
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
... Effect of depth of nonmartensitic layer on hardness, residual stress, and bending fatigue strength in case-hardened and tempered 4 mm modulus gears Table 1.4 Effect of depth of nonmartensitic layer on hardness, residual stress, and bending fatigue strength in case-hardened and tempered 4 mm modulus...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320189
EISBN: 978-1-62708-347-8
... • DePaul R.A. , High Cycle and Impact Fatigue Behavior of Some Carburized Gear Steels , Met. Eng. Q. , Nov 1970 10.4271/710277 • Drago R. , “An Improvement in the Conventional Analysis of Gear Tooth Bending Fatigue Strength, ” Fall Technical Meeting , American Gear Manufacturers...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.9781627083478
EISBN: 978-1-62708-347-8
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
.... (a) 1 kg load. Source: Ref 10 Effect of decarburization on the fatigue and bending strength of case-hardened 20Kh2N4A steel Table 2.3 Effect of decarburization on the fatigue and bending strength of case-hardened 20Kh2N4A steel Surface content, % (atmosphere) Fatigue strength (σ - 1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770001
EISBN: 978-1-62708-337-9
... to are bending-fatigue strength, contact-fatigue resistance, hardness, and wear resistance. These properties were chosen because it is to promote one or more of these properties that the carburizing treatment is employed. A gear tooth is a good example in which each of these must be considered. Some significance...
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
..., HRC Bend strength, MPa Impact strength, MPa Impact fatigue strength, MPa 900 40 57 1500 2500 670 860 20 59 1420 2500 770 820 0 61 1390 2500 790 790 0 61 1250 2800 800 Source: Ref 23 Effect of retained austenite on the scuffing tendency of steel Table...
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
...; cool to 595 °C; reheat to 870 °C; oil quench Network/spheroidal carbides All tempered at 175 °C Fig. 3.2 The iron-carbon equilibrium diagram used to explain network carbide formation Fig. 3.13 A comparison of the bending fatigue strengths of carburized 12KhN3 gears...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320033
EISBN: 978-1-62708-347-8
... gears are required to maintain high compressive and bending strengths at an elevated temperature, carburizing steels that are least affected by tempering temperature are preferred. Fig. 5.2 Variation of tooth surface hardness with tempering temperature of carburized and hardened AISI 8620H gears...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250311
EISBN: 978-1-62708-345-4
..., the chapter describes the test procedures for surface durability (pitting), root strength (bending), and scoring (or scuffing) testing. durability fatigue test gear failure gears mechanical testing residual stress rolling contact fatigue test single-tooth fatigue test single-tooth overload test...
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
.... In applications where gears are required to maintain high compressive and bending strengths at an elevated temperature, carburizing steels that are least affected by tempering temperature are preferred. Fig. 3 Variation of tooth surface hardness with tempering temperature of carburized and hardened AISI...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770099
EISBN: 978-1-62708-337-9
... Ultimate tensile strength, MPa (kg/mm 2 ) 775 (79) 700(72) Reduction of area, %  Longitudinal 62.8 59.5  Transverse 17.5 29.7 Reduction of area anisotropy, transverse/longitudinal 0.28 0.50 Bending fatigue, MPa (kg/mm 2 )  Longitudinal 390(39.4) 375 (38.5)  Transverse 320...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130177
EISBN: 978-1-62708-284-6
...Comparison of carburizing and carbonitriding processes Table 1 Comparison of carburizing and carbonitriding processes Process Comments Carburizing Hard, highly wear-resistant surface (medium case depths), excellent contact load potential, good bending fatigue strength, good seizure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320175
EISBN: 978-1-62708-347-8
... types (e.g., spur, helical, bevel, etc.). This process is used when gear teeth require high surface hardness, but size or configuration does not lend itself to carburizing and quenching the entire part. The process also may be used when contact and bending fatigue strengths generally achieved...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610147
EISBN: 978-1-62708-303-4
.../longitudinal 0.68 0.86 Hardness, HRC 27 29 Source: Ref 25 Effect of method of machining on fatigue strength Table 2 Effect of method of machining on fatigue strength Alloy Machining operation Endurance limit in bending, 10 7 cycles Gentle grinding, % MPa ksi 4340 steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310203
EISBN: 978-1-62708-326-3
..., 0.57 in. Case-hardening processes and their characteristics Table 5 Case-hardening processes and their characteristics Process Characteristics Carburizing Hard, highly wear-resistant surface (medium case depths); excellent capacity for contact load; good bending fatigue strength...
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
... unknown. Although reduced allowable bending fatigue strength was considered in designing the planet gears for reverse bending, it did not take into account any possible change in the slope of the S - N curve (damage line) due to the high magnitude of a fluctuating load. Fig. 6.18 Fluctuation...