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bend strength

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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 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130241
EISBN: 978-1-62708-284-6
... of the strength condition for the surface layer. Loading characteristics are typical distributions of stresses across the section of a component or specimen for the investigated types of loading: tensile-compressive, bending, or torque. For smooth specimens, their determination does not present any problems. Some...
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 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250249
EISBN: 978-1-62708-345-4
... on most gear types (spur, helical, bevel, herringbone, etc.). These processes are used when gear teeth require high hardness, but size or configuration does not lend itself to carburizing and quenching the entire part. Both processes may also be used when the maximum contact and bending strength achieved...
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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250293
EISBN: 978-1-62708-345-4
... Directions , STP 1077, ASTM , 1989 , p 261 – 270 10.1520/STP19099S • Okada Y. et al. , Fatigue Strength Analysis of Carburized Transmission Gears , JSAE Rev. , Vol 11 ( No. 3 ), 1990 , p 82 – 84 • Pizzichil W. , Testing Gear Teeth for Low-Cycle Fatigue and Static Bending...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320175
EISBN: 978-1-62708-347-8
... that requires high bending strength, it is necessary to get a reasonable hardness depth at the root fillet. Table 9.3 shows how much is needed for different size gear teeth. Recommended depth of hardness in root region for induction-hardened teeth Table 9.3 Recommended depth of hardness in root region...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250001
EISBN: 978-1-62708-345-4
... material. Hooke’s law is the same: A change of deflection can be accomplished only by a change of design. Bending strength of a gear tooth is the amount of load per unit area acceptable at the root radius to the point of permanent deformation. Permanent deformation of a carburized tooth is usually...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050155
EISBN: 978-1-62708-311-9
... strength and impact energy (brittleness) for an induction hardened and tempered SAE 15B35. Up to 150 °C (300 °F) there is very little drop in hardness, while the impact bending yield strength increases up to 260 °C (500 °F). Figure 7.9 shows the bending life fatigue of SAE 15B35 induction-hardened...
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
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770171
EISBN: 978-1-62708-337-9
... quenching Table 7.14 Effect of subzero cooling after quenching Heat treatment after carburizing Condition Retained austenite, % Hardness, HRC Bending strength Impact MPa kg/mm 2 MPa kg/mm 2 Oil quenched from 800 °C, low-temperature tempered As-quenched 62 54 1530 156 25.5...
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
...%. (a) Strain, <0.002. Source: Ref 12 Effect of quenching temperature on bend and impact strength of case-hardened 15Cr-6Ni steel Table 4.2 Effect of quenching temperature on bend and impact strength of case-hardened 15Cr-6Ni steel Quench temperature, °C Retained austenite, % Hardness...
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...
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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700177
EISBN: 978-1-62708-279-2
... in component formability The performance index for selecting a sheet metal panel meeting the constraints on bending strength and thinness is given by Ref 12.10 : t >= [ 6 M / W σ y ] 1 / 2 where, for a panel of width W subjected to a moment, M , without...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320033
EISBN: 978-1-62708-347-8
... 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 Fig. 5.3 Influence of tempering...
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 2000
DOI: 10.31399/asm.tb.htgpge.t67320021
EISBN: 978-1-62708-347-8
... power density gearbox compared with the one made with case-hardened gears. Also, for similar torque capacity, through-hardened gears are larger with higher pitch line velocity. This increases dynamic problems substantially in a gearbox. However, in a bending strength limited design, through-hardened...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250155
EISBN: 978-1-62708-345-4
... problems substantially in a gearbox. However, in a bending strength limited design, through-hardened gears sometimes are successfully used, particularly for large gears (over 508 mm, or 20 in., outer diameter) that normally exhibit high distortion if a case hardening process is used. An example...