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Gear boxes

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Image
Published: 31 December 2017
Fig. 6 Picture of the gear box from 1,000,000 mile test with polyalphaolefin-based gear oil. Reprinted with permission from Cognis Corp./BASF More
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001366
EISBN: 978-1-62708-173-3
... platen of a flash welder can be driven by a number of different methods. The simplest type often uses a cam that is motor driven through a gear box. Flashing time is then controlled by the speed of the motor. The cam is machined to produce the desired flashing cam curve profile, including...
Image
Published: 01 January 1987
Fig. 31 17-4 PH stainless steel main landing-gear deflection yoke that failed because of intergranular SCC. (a) Macrograph of fracture surface. (b) Higher-magnification view of the boxed area in (a) showing area of intergranular attack. (W.L. Jensen, Lockheed Georgia Company) More
Image
Published: 01 August 2013
Fig. 18 Load configuration for low-pressure carburizing of transmission gears used in landing box. SAE 9310; 12 parts per batch; carburizing temperature, 960 °C (1760 °F); nitrogen, 6 bar (4500 torr); case-hardening depth, 1.4–1.65 mm (0.055–0.065 in.). Source: Ref 14 More
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006356
EISBN: 978-1-62708-192-4
... miles per year with no lubricant changeout in the gear lubricant. At the end of the test, the teardown of the equipment was performed by the gear box manufacturer, and it was concluded that no major wear issues were observed. Figure 6 shows a picture of the gear box from the 1,000,000 mile test...
Book Chapter

Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005765
EISBN: 978-1-62708-165-8
... to the hoppers that supplied boxes used in pack carburizing gears, pins, shafts, and special washers to a case depth of 1.5 mm (0.060 in.), in continuous furnaces. Weight, screen analyses, and chemical analyses of the as-received compounds are shown in Table 2 . Evaluation of pack-carburizing compound...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002442
EISBN: 978-1-62708-194-8
... the mechanism performance due to changes in mass properties of the part. This in turn may require another iteration in the stress analysis. However, loads are only part of the need for prediction of the behavior of a mechanism. Example 2: Simulation to Predict Loads in Aircraft Landing Gear The first...
Series: ASM Handbook Archive
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000612
EISBN: 978-1-62708-181-8
... of aircraft main landing gears, and aircraft engine mount beams. aircraft main landing gear fatigue fracture fractograph high-pressure compressors intergranular fracture intergranular stress-corrosion cracking precipitation-hardening stainless steel tension-overload fracture Fig. 720...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005252
EISBN: 978-1-62708-187-0
..., cover plates, gear pinions, bushings, racks, quadrants Gray iron, classes 20, 25, 30, and 35 60 parts sand No. 12 35 parts sand No. 1 4% resin No. 5 2% treated bentonite 1% calcium stearate Section thickness: 3.2–19 mm ( 1 8 –¾ in.) Overall linear dimension: 914 mm (36 in.) Maximum...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005809
EISBN: 978-1-62708-165-8
... of unbalanced thermal and transformation stresses induced by the quenching operation itself. High precision components such as industrial bearing races and automotive spiral bevel gears can often distort unpredictably during unconstrained or free oil quenching as a result of these factors. Press quenching...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002173
EISBN: 978-1-62708-188-7
... between gears is smaller in diameter than the length between the gears. The main spindle bearing, the bull gear, and the ring gear (when used) are all the same nominal diameter as the maximum size of the roll the lathe will turn. Additional information on superlathe gearing and electrical drive systems...
Series: ASM Handbook Archive
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000607
EISBN: 978-1-62708-181-8
...-embrittlement fracture, fatigue crack propagation, and corrosion fatigue of components made from high-carbon steels. The high-carbon steel components include bull gear, drive shaft, power boiler stoker grate, steel wheel, spring wire, suspension spring, automotive engine valve spring, power spring, cantilever...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006114
EISBN: 978-1-62708-175-7
.... , Powder Forging of Helical Gears for Car Manual Gear Boxes—Concept and Properties , Met. Powder Rep. , Vol 45 ( No. 4 ), 1990 , p 269 – 273 10.1016/S0026-0657(10)80053-0 5. Saheb S.D.K. and Gopinath K. , Tooling for Powder Metallurgy Gears , Powder Metall. Sci. Technol. , Vol 2...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005951
EISBN: 978-1-62708-168-9
... Applications MPa ksi SAE 5120 600–850 87–123 Camshafts, rollers, gudgeon pins, spindles SAE 4620 750–1050 109–152 Camshafts, cams, gear box, steering arm sector shafts, transmission components DIN 16MnCr5 800–1100 116–159 Small gear wheels, shafts, bevel gear, transmission SAE 8620...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005308
EISBN: 978-1-62708-187-0
... core boxes for each section of the mold. These large mold assemblies are made on the foundry floor or in large pits built into the foundry floor ( Ref 5 ). For example, the mold for a large gear can be made from a sectional pattern or core box that is a wedge-shaped segment of the hub, spokes, rim...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005436
EISBN: 978-1-62708-196-2
... Schematic representation of quenching a gear, showing the presence of three phases of quenching at the same time. Source: Ref 1 It can be seen that increasing the degree of agitation reduces the stability of the vapor phase and increases the maximum rate of cooling. This also has the benefit...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003477
EISBN: 978-1-62708-195-5
..., and airbrake have skins of solid laminate. For rudder and in- board aileron, the substructure also is solid laminate. Sandwich panels are used for the side skins of the forward fuselage, the upper and side skins of the rear fuselage, the landing gear doors and for load-carrying covers of the center fuselage...
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
... factors that impact the precision forging process. It provides information on the achievable tolerances and presents examples of precision forging. A discussion on forging of bevel gears/spiral bevel gears is also presented. axle shafts bevel gears precision flashless forging precision hot...
Book Chapter

Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006740
EISBN: 978-1-62708-210-5
... corrosion cracking in aerospace applications such as wing-box ribs and spars; fuselage primary structural elements such as frames, bulkheads, windshield surrounds; and structural components in landing-gear bays. Plate product has excellent flatness, consistency, and low residual stress that facilitate...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004036
EISBN: 978-1-62708-185-6
... Hammer and Press Forgings Dies for finish forging of radially symmetrical configuration are usually designed to provide flash of uniform size around the periphery of the forging. The design of flash for a radially symmetrical forging is relatively simple, as is exemplified by the gear blank...