Hardened Layer and Bending Fatigue Strength of Induction Hardened Thermally Refined Steel Gears

Miyachika, Kouitsu; Katanuma, Hideaki; Iwanaga, Jun; Mada, Hidefumi

doi:10.1299/jamdsm.3.136

Cited by 2 publications

(2 citation statements)

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“…Due to the fact that the drive shaft is a metal member of the power system in the industrial hydraulic pump, the shaft material is required to satisfy several characteristics such as high strength and structural stiffness against the torque, high wear-resistance and durability, and so on. In this study, AISI 1035 medium carbon steel as a cold drawn round bar was selected as the raw billet material [15]. The AISI 1035 raw billet workpiece is well-known as a mechanical-structural material with its chemical composition summarized in Table 1.…”

Section: Mechanical Properties Of Aisi 1035 Carbon Steelmentioning

confidence: 99%

“…Because this combined forging process is classified as merging similar or different sequences adjoining each other into one simplified procedure, it is essential that the mechanical properties of the billet workpiece have enough workability and forgeability. These mechanical properties and material characteristics can be provided and improved through suitable material selection and a series of heat treatments such as spheroidizing and annealing, and so forth [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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A Study on Two-Stage Cold Forging for a Drive Shaft with Internal Spline and Spur Gear Geometries

2018

Metals

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A two-stage cold forging process was proposed to manufacture a drive shaft with an internal spline and spur gear geometries, and this process was mainly composed of a forward extrusion for preform and a forward-backward extrusion for the drive shaft. In the process design, the preform was designed using a volume apportioning scheme from the required target shape, thereafter, the initial round billet was outlined. AISI 1035 carbon steel was selected as the raw material, and a spheroidizing heat treatment was adopted. Using the raw and spheroidizing annealed workpieces, uni-axial tensile and compression tests were carried out to evaluate the effect of the heat treatment and to measure the mechanical properties. Finite element simulations were sequentially performed to assure the suitability of the proposed process design. Considering the results from the process design and the numerical simulations, the related tool components were prepared and applied to a series of experimental investigations. The preform and the drive shaft fabricated by the two-stage cold forging experiments were compared with the required target and the numerically predicted configurations. The results indicated that the two-stage cold forging process proposed in this study could be well applied to the production of the drive shaft with an internal spline and spur gear structures.

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Section: Mechanical Properties Of Aisi 1035 Carbon Steelmentioning

confidence: 99%