Residual Stresses Formed by Vibration‐Centrifugal Hardening

Kyryliv, Yaroslav; Kyryliv, V. І.; Sas, N. B.; Dutka, V. R.

doi:10.1155/2020/5189473

Cited by 1 publication

(1 citation statement)

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“…The residual compressive stresses in the hardened layer after vibration-centrifugal hardening for optimal parameters reach maximum values: circular stresses up to σmaxcir = 1600 MPa and radial stresses up to σr = 290 MPa. Their correlation with surface microhardness is shown [17,18]. In article [19], a method of vibratory centrifugal strengthening was developed to ensure the reliability parameters of "bushing" type parts.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Model of Vibration-Centrifugal Processing of Parts Using Loose Abrasive

Lyashuk,

Mytnyk,

Aulin

et al. 2024

KEM

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The article presents some new theoretical and experimental solution of a scientific and applied problem of technological support for vibratory centrifugal processing of complex-profiled parts in a bulk abrasive environment. This solution aims to increase productivity while ensuring the desired quality of the processed surfaces. The authors have developed a mathematical model that describes the action of abrasive particles on the surface of the parts, taking into account the parameters of the granular abrasive medium based on Voigt’s law. This allows the description of dynamic processes in the processing environment for a wide range of material types. The natural frequencies of oscillations of the processed medium layer have been determined, which depend on the amplitude of its vibrations for different densities of soft and hard materials of the processed medium and the medium with linear-elastic properties. The methodology includes the use of test equipment to conduct experimental research on the process, which involves determining changes in specific metal removal rates and surface roughness using the frequency converter Altivar 71 with the PowerSuite v.2.5.0 software.

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Section: Introductionmentioning

confidence: 99%