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gear tooth

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Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000608
EISBN: 978-1-62708-181-8
... a service life of just 2 weeks. Heat treatment did not produce full hardness in gear teeth. Hardness at tooth face, 15 HRC; at tooth core, 82 HRB. Fig. 357 : Outside diameter of gear showing where teeth broke off. Fatigue pattern on fracture surfaces is typical of reversed bending even though the...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003986
EISBN: 978-1-62708-185-6
.... It is sometimes just as costly to finish machine a forged gear tooth as it is to machine it completely from a traditional forging. The forging for bevel gears with net teeth is a well-established and an economical process. It has been used for a number of years for making differential gears for...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006476
EISBN: 978-1-62708-190-0
... nonlinearity in the correlation. Examples are presented in Fig. 5 . Fig. 5 Example of correlation between nital etch (top row) and magnetic Barkhausen noise (MBN) signal amplitude (bottom row) on three gear teeth. Measurements were performed on each tooth with MBN before verifying destructively with...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000607
EISBN: 978-1-62708-181-8
... a tooth of the induction-hardened AISI 1053 steel left-side bull gear of a tractor. Hardness of the tooth was 57 HRC at the tip and 50 HRC at a depth of 13.3 mm (0.52 in.). Hardness in the root fillet was approximately 56 HRC near the surface and 50 HRC at a depth of 11.5 mm (0.45 in.). The arrow...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000606
EISBN: 978-1-62708-181-8
... flame-hardened crane gear of AISI 1045 steel in which fatigue cracks formed at the roots of many teeth after one year of service. The cracks have been sharply delineated by etching. Note that hardening did not extend even to the root fillet of any tooth. Figure 212 is a polished and etched cross...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005950
EISBN: 978-1-62708-166-5
... microstructure, distortion, residual stress, and cracking in gears, shafts, and bearing rings. bearing rings cracking distortion electrical conductivity gears heat treatment heat treatment simulation induction hardening magnetic permeability microstructure phase transformation residual stress...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
...-scanning, and scratch tests. After a discussion on gear scuffing, information on the material-dependent adhesive wear and factors preventing adhesive wear is provided. adhesive wear coefficient of friction galling metal sliding contacts scoring scuffing seizure scratch tests twist compression...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006656
EISBN: 978-1-62708-213-6
... as large as the entire gear. Micro-XRD was well suited for this analysis because the x-ray beam could be collimated to irradiate a single tooth. Two-dimensional diffraction patterns for both samples are shown in Fig. 18 . Fig. 18 Micro x-ray diffraction two-dimensional patterns for (a) good...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005956
EISBN: 978-1-62708-166-5
... process with all of its variables must be regarded. Different parameters, which were screened for their influence on the distortion of discs and gear wheels, are introduced here. Carburizing, nitriding, and nitrocarburizing are the most important thermochemical processes to enhance fatigue and...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005967
EISBN: 978-1-62708-166-5
... on a gear tooth increases as the 4.3 power of the taper. The solution to the gear-design problem is to provide greater symmetry ( Fig. 33 ). If this is not...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
..., which eventually leads to material removal. The alternating stress field in RCF is either pure rolling (e.g., rolling-element bearings) or rolling-sliding (gear tooth loading). The distinction between these two is comprised of the existence of gross sliding between mating parts, because microslip is...
Book

Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.9781627081887
EISBN: 978-1-62708-188-7
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... carburized surface layer of a tooth in gears manufactured from Deutsche Industrie-Normen (DIN) 17CrNiMo6 steel (0.18 C, 0.38 Mn, 0.008 P, 0.020 S, 0.20 Si, 1.73 Cr, 1.58 Ni, and 0.25 Mo). Fig. 42 (a) Crack running through the carburized surface layer on the flank of a gear tooth. (b) Region of the...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005940
EISBN: 978-1-62708-166-5
... following sections, some examples are presented. The first shows the influence of the variation of the bore diameter of a simple disk with a hole. In the second example, the influence of size changes of the base body of a gear—again, a disk with a hole—and the toothing are shown. Finally, some results for...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003230
EISBN: 978-1-62708-199-3
... servicing. (a) Carbon on valves. (b) Broken transmission gear tooth. (c) Differential gear wear. A toolmakers' microscope consists of a microscope mounted on a base that carries an adjustable stage, a stage transport mechanism, and supplementary lighting. Various objective lenses provide...
Book Chapter

By Ted Kostilnik
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001235
EISBN: 978-1-62708-170-2
...) Rotating bending Machined 4340 steel (277 HB) Plain (R.R. Moore) Rotating bending Machined 4118 steel (60 HRC) Single gear tooth Unidirectional bending Machined 8620 steel (58 HRC) Single gear tooth Unidirectional bending Machined S-11 steel (n) Grooved, 7 mm (0.3 in.) D (o...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... discern ( Fig. 29 ). Fig. 29 (a) Phosphor bronze worm gear with worn teeth. (b) Original shape of tooth. Ferric chloride etch. (c) Worn tooth with cold work. Ferric chloride etch. (d) Alloy steel gear with worn teeth. Original magnification: 5×. (e) Section through worn tooth with burrs. Structure...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006678
EISBN: 978-1-62708-213-6
... porosity in cast products Depth and uniformity of a hardened layer in a case-hardened product Fig. 2 Examples of uses for metallography. (a) Equiaxed ferrite grain size in plain carbon steel. (b) Ion-carburized gear tooth showing case depth. (c) Microstructure of galvanized coating on steel...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2