Profile grinding of DZ125 nickel-based superalloy: Grinding heat, temperature field, and surface quality

Zhao, Zhengcai; Qian, Ning; Ding, Wenfeng; Wang, Yang; Fu, Yucan

doi:10.1016/j.jmapro.2020.06.022

Cited by 52 publications

(10 citation statements)

References 41 publications

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“…The reason for this could be the heat transfer during grinding. In recent research projects, references were made to the high gradient in the residual stress depth curve caused by the high temperature development during grinding of hard materials [32][33][34]. This would also explain the abrupt drop of the high compressive residual stresses.…”

Section: Residual Stress Statementioning

confidence: 99%

Investigations on Tailored Forming of AISI 52100 as Rolling Bearing Raceway

Coors

Mildebrath

Büdenbender

et al. 2020

Metals

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Hybrid cylindrical roller thrust bearing washers of type 81212 were manufactured by tailored forming. An AISI 1022M base material, featuring a sufficient strength for structural loads, was cladded with the bearing steel AISI 52100 by plasma transferred arc welding (PTA). Though AISI 52100 is generally regarded as non-weldable, it could be applied as a cladding material by adjusting PTA parameters. The cladded parts were investigated after each individual process step and subsequently tested under rolling contact load. Welding defects that could not be completely eliminated by the subsequent hot forming were characterized by means of scanning acoustic microscopy and micrographs. Below the surface, pores with a typical size of ten µm were found to a depth of about 0.45 mm. In the material transition zone and between individual weld seams, larger voids were observed. Grinding of the surface after heat treatment caused compressive residual stresses near the surface with a relatively small depth. Fatigue tests were carried out on an FE8 test rig. Eighty-two percent of the calculated rating life for conventional bearings was achieved. A high failure slope of the Weibull regression was determined. A relationship between the weld defects and the fatigue behavior is likely.

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Section: Residual Stress Statementioning

confidence: 99%

Investigations on Tailored Forming of AISI 52100 as Rolling Bearing Raceway

Coors

Mildebrath

Büdenbender

et al. 2020

Metals

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show abstract

“…The wear modes varied from one location to another in the pro le grinding wheels [18]. A nite element method was also applied to investigate the grinding temperature, and the grinding temperature was less than 120°C without grinding burn [17,20]. When grinding an NDG with the creep feed parameter, the whole volume of the groove material was removed.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the wear behavior of abrasive grits in a dry machining Inconel 718 narrow-deep-groove with a single-layer cubic boron nitride grinding wheel

Liang

Shen

et al. 2021

Int J Adv Manuf Technol

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The wear behavior of a single-layer electroplated cubic boron nitride (cBN) grinding wheel was investigated in creep feed pro le grinding Inconel 718 narrow-deep-groove with a width of 2 mm. In this paper, the protrusion height of cBN grits on the side edge of the grinding wheel was measured by threedimensional optical pro ler, and a scanning electron microscope was used to detect the topography of worn cBN grit and the nickel bonding layer. The investigation results indicated that the steady wear stage of the grinding wheel shared more than 84.6% of the wheel lifespan, and the machining precision of the grinding wheel was kept at a high level. The fracture mode of the cBN grit was proven to be cleavage. The source of the cleavage cracks was observed on the surface of wear at or the side surface of the cBN grit.The holding strength of cBN grit could be weakened due to the joint surface breakage, the displacement of grit, or the cracks of the nickel bonding layer. The transition layer was contributed to the decrease of the bonding strength. Severe macro fractures and the concentration of pulled out grits were observed on the transition edge and the inner area of the side edge, separately. This study provides a deep understanding of the wear mechanism of a single-layer electroplated cBN grinding wheel.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Wear Behavior of Abrasive Grits in a Dry Machining Inconel 718 Narrow-Deep-Groove with a Single-Layer Cubic Boron Nitride Grinding Wheel

Liang

Shen

et al. 2021

Preprint

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The wear behavior of a single-layer electroplated cubic boron nitride (cBN) grinding wheel was investigated in creep feed profile grinding Inconel 718 narrow-deep-groove with a width of 2 mm. In this paper, the protrusion height of cBN grits on the side edge of the grinding wheel was measured by three-dimensional optical profiler, and a scanning electron microscope was used to detect the topography of worn cBN grit and the nickel bonding layer. The investigation results indicated that the steady wear stage of the grinding wheel shared more than 84.6% of the wheel lifespan, and the machining precision of the grinding wheel was kept at a high level. The fracture mode of the cBN grit was proven to be cleavage. The source of the cleavage cracks was observed on the surface of wear flat or the side surface of the cBN grit. The holding strength of cBN grit could be weakened due to the joint surface breakage, the displacement of grit, or the cracks of the nickel bonding layer. The transition layer was contributed to the decrease of the bonding strength. Severe macro fractures and the concentration of pulled out grits were observed on the transition edge and the inner area of the side edge, separately. This study provides a deep understanding of the wear mechanism of a single-layer electroplated cBN grinding wheel.

show abstract

Profile grinding of DZ125 nickel-based superalloy: Grinding heat, temperature field, and surface quality

Cited by 52 publications

References 41 publications

Investigations on Tailored Forming of AISI 52100 as Rolling Bearing Raceway

Investigations on Tailored Forming of AISI 52100 as Rolling Bearing Raceway

Investigation of the wear behavior of abrasive grits in a dry machining Inconel 718 narrow-deep-groove with a single-layer cubic boron nitride grinding wheel

Investigation of the Wear Behavior of Abrasive Grits in a Dry Machining Inconel 718 Narrow-Deep-Groove with a Single-Layer Cubic Boron Nitride Grinding Wheel

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