New approach towards the machining process after laser cladding

Shen, Xuehui; Wang, Jiatian; Xu, Chonghai; Bai, Xiaolan

doi:10.1007/s43452-020-00153-8

Cited by 15 publications

(3 citation statements)

References 37 publications

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“…The experimental results show that UWB/HT has the best performance in improving the surface finish, adhesion behavior and corrosion resistance of laser cladding (Shen et al, 2021). Stojanovic et al aiming at the friction problem of timing belt drive, proposed the friction characteristics analysis of belt teeth and belt wheel teeth, and proved that rolling and wear would lead to the increase of belt tooth spacing, which would lead to a sharp reduction in life and transmission failure (Stojanovic et al, 2009).…”

Section: Related Workmentioning

confidence: 99%

Preparation and mechanical properties of LC cladding layer for friction parts

Jiang

2024

Front. Mech. Eng.

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Introduction: In the actual engineering operation, there are some components facing high frequency friction, which have high damage rate and poor direct replacement benefit. In order to achieve sustainable resource utilization and more effective component remanufacturing, research was conducted on the cladding layer of friction components.Methods: Based on the idea of remanufacturing, taking 42CrMo as the raw material of engine piston pin hole, laser cladding technology and ultrasonic rolling technology are used to prepare the cladding layers of Fe, Ni and Co three different substrates.Results and Discussion: The experimental results showed that the Co based cladding layer with ultrasonic rolling technology performed best. The surface roughness reduced by 1.02 μm, only 0.14 μm. The microhardness increased by 101.39%, with 795.38 HV. The friction coefficient was 0.051. The friction rate at high temperature decreased by 85.71%, and it was 1.2%. The friction at high temperature was reduced by 79.24%, with 0.9%.Conclusion: Co based cladding layer combined with ultrasonic rolling technology shows the best performance, which can effectively realize the remanufacturing of engine piston pin hole, providing technical reference and data support for the remanufacturing process of high-frequency friction components.

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Section: Related Workmentioning

confidence: 99%

Preparation and mechanical properties of LC cladding layer for friction parts

Jiang

2024

Front. Mech. Eng.

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“…In addition to the significant decrease in surface roughness, UB treatment can induce compressive residual stress in near-surface materials. Thus, by UB treatment, a gradient structure with more refined grains of treated material could be obtained, achieving an improvement in the surface integrity and mechanical properties of the materials [17][18][19]. At present, UB technology has been widely applied to many materials, such as iron-base alloy, Ti, commercial pure aluminum, Cu, and Ni alloys [20,21].…”

Section: Introductionmentioning

confidence: 99%

Surface Properties of Medium-Entropy Alloy Coatings Prepared through a Combined Process of Laser Cladding and Ultrasonic Burnishing

et al. 2022

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The preparation of functional coatings on metal substrates is an effective method to enhance the surface of steel structures with good serviceability in applications for engineering parts. The objective of this research is to analyze the surface properties of two sorts of medium-entropy alloy (MEA) coatings prepared by laser cladding. After cladding, the two prepared coatings were strengthened by ultrasonic burnishing (UB) treatment. Cladding coating samples before and after being UB-treated were comparatively tested in order to investigate the process effects of UB. When compared with corresponding untreated coating samples, the roughness values of the two sorts of UB-treated samples were decreased by 88.7% and 87.6%, the porosities were decreased by 63.8% and 73.4%, and the micro-hardness values were increased by 41.7% and 32.7%, respectively. Furthermore, the two sorts of UB-treated coating samples exhibited better mechanical properties and wear resistance than corresponding untreated samples.

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“…For Inconel 690 alloy, surface roughness was increased by UNSM treatment with the increasing temperature, while the hardness was first increased with temperature increasing from room temperature to 300°C and then decreased at 700°C. Shen et al 26,27 investigated the role of UWB at 200°C on the surface properties of laser cladded layer. The results indicated that the UWB treatment was beneficial for further improvement in surface roughness, hardness as well as residual stress of the laser cladded layers.…”

Section: Introductionmentioning

confidence: 99%

Improving the surface integrity of laser cladded layer by ultrasonic-assisted burnishing at medium temperature with considering initial surface conditions

Zhang

Jin

Jiang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Improving the surface integrity of laser cladded layer via burnishing is an important research topic in remanufacturing field. However, the initial surface roughness condition induced by mechanical machining generates great influence on the strengthening mechanism of subsequent burnishing. In this study, the effects of ultrasonic-assisted burnishing (UB) and ultrasonic-assisted warm burnishing (UWB) on the surface integrity of laser cladded layer were analyzed when treated on different surface conditions obtained by turning with different feed parameters. The results indicated that both the UB and UWB treatments would cause great improvements in microhardness, surface roughness including height and functional parameters, and residual stress of the laser cladded layer when compared to those by turning. First, the severe plastic deformation in UB and UWB treatments counteracted the thermal softening effect in turning process, so that the machined surface could maintain high hardness. Second, UB treatment reduced the roughness by 70% compared with turning, while the surface roughness after UWB treatment was even 30% lower than that obtained by UB. Third, the tensile residual stress shifted to deep compressive state by both UB and UWB treatments, though the thermal load in UWB generated a negative effect on generating compressive residual stress. According to the surface integrity evaluation results by radar diagrams, turning with feed f = 0.2 mm/r and UWB is preferred in machining of the laser cladded layer for enhanced surface integrity. On the basis of this research, it is expected to achieve the purpose of high-efficiency and high-quality cutting of the laser cladded layer.

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New approach towards the machining process after laser cladding

Cited by 15 publications

References 37 publications

Preparation and mechanical properties of LC cladding layer for friction parts

Preparation and mechanical properties of LC cladding layer for friction parts

Surface Properties of Medium-Entropy Alloy Coatings Prepared through a Combined Process of Laser Cladding and Ultrasonic Burnishing

Improving the surface integrity of laser cladded layer by ultrasonic-assisted burnishing at medium temperature with considering initial surface conditions

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