Surface roughness formation during shot peen forming

Koltsov, Vladimir; Vinh, Le Tri; Starodubtseva, D. A.

doi:10.1088/1757-899x/327/4/042125

Cited by 7 publications

(6 citation statements)

References 1 publication

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“…In order to determine roughness parameters within the base area, it is necessary to find a center plane of surface profile P i after shot peening. According to the methods used for determining a center plane of three-dimensional surface topography and roughness parameters within the base area [10,13] (where the base area is square with side equal to base length), a center plane is a plane with equal volume of material above and volume of voids below within the base area. As far as shot peening causes dimples along the part surface most whose depths exceed the original roughness depth value, it can be assumed that the center plane after SP is below the original center plane of the milled surface.…”

Section: Determining Roughness Parameters For the Basementioning

confidence: 99%

“…The formula (12) determines Sa after SP without regard to original surface roughness. Based on the original surface roughness, the total arithmetic mean deviation of the profile Sa t can be determined by formula (13):…”

Section: Determining Roughness Parameters For the Basementioning

confidence: 99%

“…To check the validity of the proposed mathematical models (13) it was necessary to measure the depth of dimples on different parts of the surface scanning by optical method [13]. The results of measuring the depths of dimples at the stage of shot peening, as well as the depths of dimples after shot peen forming.…”

Section: Determining Roughness Parameters For the Basementioning

confidence: 99%

“…Thus, the original center plane of surface profile formed by milling, is shifting down after shot peening [13]. In subsequent grinding the center plane also moves down when the material layer within the allowance is removed.…”

Section: Determining Roughness Parameters Within the Base Area Dmentioning

confidence: 99%

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Step-by-step surface roughness formation during shot peening and subsequent grinding with flap wheels

Koltsov¹,

Starodubtseva²,

Vinh³

et al. 2018

Proceedings of the International Conference "Aviamechanical Engineering and Transport" (AVENT 2018)

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Shot peening is widely used in forming panels and sheaths. Due to a shot peen impact on a processed surface, a specific microgeometry is formed, a characteristic feature of this microgeometry is the numerous traces of shot (in shape of the dimples) with different diameters and depths. A presence of these dimples causes deterioration of surface roughness parameters. Therefore, after shot peening the mandatory requirement is implementation of surface grinding with flap wheels for partial removal of the dimples. A size of the assigned allowance for grinding depends on the quality requirements of the part surface. At the same time, a depth of the dimples is determined by the part surface roughness requirements. After grinding, the new surface microgeometry as a combination of micro-roughness from previous types of processing and the remaining dimples from impact of shot is formed. In this work the analytical description about formation of microgeometry of surface layer of the samples after shot peen forming and subsequent grinding with flap wheels was presented. The parameters of surface roughness were measured by the method of three-dimensional optical scanning. In the measurement result, the mathematical model of formation of the surface micro-profile during shot peening and grinding with flap wheels was formulated. Keywords-shot peening; grinding with flap wheels; dimple; optical method of three-dimensional scanning; surface roughness during shot peening; surface roughness during grinding with flap wheels I.

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Section: Determining Roughness Parameters For the Basementioning

confidence: 99%

Section: Determining Roughness Parameters For the Basementioning

confidence: 99%

Section: Determining Roughness Parameters For the Basementioning

confidence: 99%

Section: Determining Roughness Parameters Within the Base Area Dmentioning

confidence: 99%

See 2 more Smart Citations

Step-by-step surface roughness formation during shot peening and subsequent grinding with flap wheels

Koltsov¹,

Starodubtseva²,

Vinh³

et al. 2018

Proceedings of the International Conference "Aviamechanical Engineering and Transport" (AVENT 2018)

Self Cite

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show abstract

“…At the second stage, shot peening is used on the aerodynamic surface to create a theoretical shape of the part. Surface roughness formation during shot peen forming is provided by grinding operation [6,7]. Fig.…”

Section: Introductionmentioning

confidence: 99%