Tribological Behavior and Microstructural Analysis of Atmospheric Plasma Spray Deposited Thin Coatings on Cardan Cross Spindles

Munteanu, Corneliu; Paleu, Viorel; Istrate, Bogdan; Dascălu, Anişoara; Paleu, C Cîrlan; Bhaumik, Shubrajit; Ancaş, Ana Diana

doi:10.3390/ma14237322

Cited by 8 publications

(4 citation statements)

References 38 publications

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“…The analyzed refits and replacements of universal joints described in Eqs. ( 21) and (22) were conducted in the machine shops of the company named Termomontaza Novi Sad. The gross hourly price for overhaul work was 13.24 € per hour.…”

Section: Figure 10 Methods For the Justification Of The Refitmentioning

confidence: 99%

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Analysis of Bearing Assemblies Refit in Agricultural PTO Shafts

2023

Teh. vjesn.

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The paper analyzes the problems of the most commonly used cardan shafts in agricultural machinery through a theoretical review and tests on a laboratory test bench. The aim of the research presented in this paper was to define the justification of a new method for retrofitting universal joint bearing units compared to the traditional methods of retrofitting. The new approach is based on energy efficiency (saving energy, raw materials and labor) compared to the conventional methods of retrofitting. The presented investigation to justify the proposed refit was carried out after the investigation of the extent of damage to the elements of the bearing assembly, which lasted 4.02 minutes per sample, with the aim of obtaining information essential for the purpose of our work. The proposed diagnosis and refit of the cardan bearings can help to extend the service life and improve the reliability of the universal joint shafts already in service. The results of the research have shown that the method with replaceable bushings (installation of undamaged surfaces in the load transfer zone) is 6.24 to 7.54 times cheaper than the complete repair of the elements of the bearing assembly, 2.11 to 2.83 times cheaper than the refit method, in which the damaged joints are replaced with new ones, and 1.62 to 2.74 times cheaper than the purchase of new double PTO (Power Take-Off) shafts.

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Section: Figure 10 Methods For the Justification Of The Refitmentioning

confidence: 99%

“…The most common conditions leading to cardan shaft damage are: unbalance [19], design defects, material fatigue [20,21], complex working environment conditions such as dust [22], complicated maintenance [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Bearing Assemblies Refit in Agricultural PTO Shafts

2023

Teh. vjesn.

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“…The wear rate of the coating was significantly reduced by 90% and 77% at room temperature and high temperature, respectively. Munteanu et al [19] deposited thin wear-resistant coatings of 20 (Ni17.5Cr4Fe4Si4B 0.5C), 80 (WC12Co), and 88WC12Co metal powders through atmospheric plasma spraying (APS). Sun et al [20] synthesized WCoB/WNiB phases in situ by the reaction of WB with Co/Ni, and a series of novel WB-WCoB coatings were prepared by controlling the content of the metal phases.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties Laser-Cladded Spherical WB-Reinforced Co-Based Coatings under Low-Temperature Friction

Fan,

Chen,

Zhu

et al. 2023

Materials

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Three groups of spherical WB-reinforced Co-based coatings (Co coating, Co + 15%WB coating, Co + 45%WB coating) were fabricated by laser-cladded technology. The microstructure and constituent phase of spherical WB-reinforced Co-based coatings were examined through scanning electron microscopy (SEM) with energy dispersive spectrometry (EDS) and X-ray diffraction (XRD). The low-temperature tribological properties were analyzed by coefficient of friction, 2D and 3D profiles across the wear track, and wear surface morphology, respectively. The results showed that the phases in the WB-reinforced Co-based coatings are mainly γ-Co, carbides Cr23C6 and Cr7C3, WB, and WO3. Under dry sliding friction at −20 °C, the more spherical WB, the lower the friction coefficient. The wear rate of Co + 45%WB coating was as low as 3.567 × 10−4 mm3/N·m−1, indicating the outstanding wear resistance. Abrasive wear was observed on the rough surface of the WB-added coatings. Compared with dry sliding, due to the plastic deformation of micro-convexes and lubrication function in the 3.5 wt.% NaCl solution, the wear tracks on the surfaces of the three tested coatings were shallower, exhibiting distinct elongated plough grooves.

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“…Copper alloy joint bearings on another hand also experience restricted promotion and application due to the run-in of pairing auxiliary and embedability of impurity mix [4]. The observed defects coupled with rapid advancement in fourth revolution industrial machinery and technologies in recent times have necessitated and stirred up immense research among industry practitioners and researchers into new joint bearing substrate materials with lightweight, good wear resistance and high bearing capacity [5,6]. In this regard therefore, extant experimental and numerical simulation studies have focused investigating the friction, wear and tear characteristics and stress distribution of various types of self-lubricating joint bearings due to their self-tuning, maintenance exemption, long life and large carrying capacities.…”

Section: Introductionmentioning

confidence: 99%

Effects of Multi-Surface Texturing on the Tribological Properties of Aluminum Based Self-Lubricating Joint Bearing under Grease Condition

Owusu-Mensah

Hua

Tian

et al. 2023

Preprint

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Joint bearing contact surfaces of high-tech precision machinery applied particularly in the manufacturing industry undergo varying range of extreme temperature and pressure conditions, which subject them to frictional wear, tear and stress during operation in different environments of application. A continuous assessment of their resilient capacities is therefore necessary to avoid operational failure of core base component parts. The aim of this study is to assess the effects of multi-surface treatment and texturing processes on the frictional and stress performance of aluminum based self-lubricating joint bearing under grease condition. Using ANSYS software based on the Hertz contact theory and Boussinesqmodel for numerical simulations of rated static load contact, the study showed that under dry friction and grease lubrication, PTFE/ardex pad stabilizes the surface friction coefficient and effectively reduces the friction coefficient. Again, the friction coefficient of the aluminum self-lubrication increases with the texture share and the sample with 15% share shows the lowest friction coefficient (0.114), under lipid lubrication conditions. It is recommended for future research to conduct a wobble (transient dynamics) and thermodynamic analysis for the model, and attempt to optimize the friction resistance of self-lubricating joint bearing by adjusting the deposition process parameters like current value, temperature and element contact.

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Tribological Behavior and Microstructural Analysis of Atmospheric Plasma Spray Deposited Thin Coatings on Cardan Cross Spindles

Cited by 8 publications

References 38 publications

Analysis of Bearing Assemblies Refit in Agricultural PTO Shafts

Analysis of Bearing Assemblies Refit in Agricultural PTO Shafts

Tribological Properties Laser-Cladded Spherical WB-Reinforced Co-Based Coatings under Low-Temperature Friction

Effects of Multi-Surface Texturing on the Tribological Properties of Aluminum Based Self-Lubricating Joint Bearing under Grease Condition

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