Effect of groove depth on the slurry erosion of V-shaped grooved surfaces

Chen, Z.X.; Hu, Hongxiang; Guo, Xuming; Zheng, Youbin

doi:10.1016/j.wear.2021.204133

Cited by 24 publications

(14 citation statements)

References 49 publications

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“…An RDE test system was employed to perform the main flow corrosion tests, whose schematic diagram is shown in Figure 2 [32,33]. The rotating disk in the RDE test system was newly designed for the geometry simulation of the WRH.…”

Section: Rde Apparatus and Testing Conditionsmentioning

confidence: 99%

Effect of Local Fluid Disturbance Induced by Weld Reinforcement Height on the Corrosion of a Low Alloy Steel Weld

Zheng

Wang

et al. 2023

Metals

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Weld corrosion exists widely in the petrochemical industry and attracts great attention. Most research proves that weld corrosion originates from the material factors introduced during the welding process. However, it is noted that local fluid turbulence due to the weld reinforcement height (WRH) plays an important role in the non-uniform corrosion of welds in flowing media. Accordingly, the individual effect of the local flow on the weld corrosion of low alloy steel was analyzed by experiments and simulation in this study. Electrochemical measurements and morphology observation were conducted, combined with flow field analyses. The results showed that local fluid turbulence due to WRH affected the non-uniform corrosion of low alloy steel welds. The upstream surface and the backflow surface had the highest and lowest corrosion rates, respectively. Interestingly, the high flow velocity surface region did not have a high-corrosion rate. This is due to the combined effects of mass transfer, charge transfer, and wall shear stress. The pitting corrosion was also discussed in view of the aspects above.

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Section: Rde Apparatus and Testing Conditionsmentioning

confidence: 99%

Effect of Local Fluid Disturbance Induced by Weld Reinforcement Height on the Corrosion of a Low Alloy Steel Weld

Zheng

Wang

et al. 2023

Metals

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“…The set of partial differential equations, named (3), (6), and (7), were solved by the TDMA method with an iteration procedure using the control volume method [47] and the author's own computer code.…”

Section: Physical and Mathematical Modelmentioning

confidence: 99%

“…The characteristics of dredging pumps and pipelines require a long working life in abrasive conditions, a limited influence of wear on pump performance and a low net positive suction head requirement. Abrasion in a pump or pipeline can be defined by the loss of weight per unit area or the loss of thickness under the dynamic action of solid particles that act on the solid wall [4][5][6]. In this process, the 'particle-wall' interaction, especially at the high particle size and density, high flow rate, and high solid concentration, plays a crucial role, and research on the determination of the 'particle wall' stress is much desired [7,8].…”

Section: Introductionmentioning

confidence: 99%

Numerical Modelling of Medium Slurry Flow in a Vertical Pipeline

Bartosik¹

2023

Advances in Slurry Technology

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The study deals with the modelling and experiments of vertical solid-liquid turbulent flow with narrowly sized solid particles of average diameters equal to 0.125 mm, 0.240 mm and 0.470 mm, and solid concentrations by volume from 10% to 40%, called medium slurry. The physical model assumes that the slurry with solid particles surrounded by water is flowing upward through a vertical pipeline with solid concentrations from 10–40% by volume. Experiments with such slurries clearly indicated enhanced damping of the turbulence, which depends on the diameter of the solid particles. The mathematical model constitutes conservative equations based on time averages for mass and momentum. The closure problem was solved by taking into account the Boussinesque hypothesis and a two-equation turbulence model together with an especially designed wall damping function. The wall damping function depends on the average diameter of the solid particles and the bulk concentration. The predictions’ results were successfully compared with the measurements. The study demonstrates the importance of solid particle diameter and showed that using a standard wall damping function gives higher friction compared to measurements. The main objective of this study is to present a mathematical model for medium slurry flow in a vertical pipeline, including a specially designed wall damping function, and to demonstrate the influence of solid particle size on frictional head loss. The effect of mean particle diameter and solid concentration on frictional head loss has been discussed and conclusions were formulated.

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“…Thus, lots of equipment manufacturers in petrochemical industry pay more attention to titanium-based materials. However, the price of titanium materials is high, which increases product cost of the equipment [1][2][3]. It limits the wide application of titanium.…”

Section: Introductionmentioning

confidence: 99%

The Microstructure and Property of a Titanium-Carbon Steel Clad Plate Prepared Using Explosive Welding

Zhao

2022

Metals

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The microstructure and properties of pure titanium (Ti)-carbon steel clad plate prepared using explosive welding were characterized. The bonding of the welding interface was inspected using C-scanning imaging technique. The microstructure and composition of the clad were characterized with optical microscopy and scanning electron microscopy. Mechanical and corrosion properties of the clad plate were investigated using tensile test, shearing test, and potentiodynamic polarization measurement. The results show that the pure titanium and carbon steel plate are joined successfully without visible defects. The interface wave is uniform. SEM observation and EDS analyses show that some melt blocks distribute at the interface waves vortices. Hardness testes results show that after heat treating, the hardness values in the titanium layer of the clad plate are similar to the original titanium plate, whereas the values at carbon steel layer increase from the interface to 300 μm away. Tensile and shearing test results indicate that the mechanical properties of the clad meet the requirements of ASTM B898 standard. Corrosion test shows that the Ecorr of the clad plate is more positive, and icorr is 1 order of magnitude lower compared to carbon steel material, suggesting that the corrosion resistance of clad plate is better than that of carbon steel material. These results suggest that the clad plate has good bonding quality and properties to meet the processing requirement and can be safely applicable in the petrochemical field.

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Effect of groove depth on the slurry erosion of V-shaped grooved surfaces

Cited by 24 publications

References 49 publications

Effect of Local Fluid Disturbance Induced by Weld Reinforcement Height on the Corrosion of a Low Alloy Steel Weld

Effect of Local Fluid Disturbance Induced by Weld Reinforcement Height on the Corrosion of a Low Alloy Steel Weld

Numerical Modelling of Medium Slurry Flow in a Vertical Pipeline

The Microstructure and Property of a Titanium-Carbon Steel Clad Plate Prepared Using Explosive Welding

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