Influence of abrasive hardness on erosion wear of abrasive air jets

Liu, Yong; Chen, Changjiang; Wei, Jianping; Liu, Xiaotian; Wang, Xiangdong

doi:10.1007/s11771-020-4301-6

Cited by 16 publications

(3 citation statements)

References 44 publications

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“…However, this paper only discusses the principle and process of erosion wear, and there is no specific discussion of the changes in erosion and wear brought about by the many different temperatures. While Liu Y et al [ 13 ] investigated the effect of abrasive hardness on erosion wear using abrasive air jets, Zambrano [ 14 ] conducted solid particle erosion wear studies using different abrasives and materials of different hardness and defined an abrasive/material hardness ratio to distinguish between light, medium, and moderate definitions of erosion wear. Bhosale et al [ 15 ] investigated the resistance to erosion and wear at high temperatures of 800, 650 and 500 °C for coating materials subjected to atmospheric plasma spraying and high speed oxyfuel processes.…”

Section: Introductionmentioning

confidence: 99%

CFD-Based Physical Failure Modeling of Direct-Drive Electro-Hydraulic Servo Valve Spool and Sleeve

Guo-qin

Yang

et al. 2022

Sensors

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Direct-drive electro-hydraulic servo valves are used extensively in aerospace, military and control applications, but little research has been conducted on their service life and physical failure wear. Based on computational fluid dynamics, the main failure forms of direct-drive electro-hydraulic servo valves are explored using their continuous phase flow and discrete phase motion characteristics, and then combined with the theory of erosion for calculation. A mathematical model of the direct-drive electro-hydraulic servo valve is established by using Solidworks software, and then imported into Fluent simulation software to establish its physical failure model and carry out simulation. Finally, the physical failure form of the direct drive electro-hydraulic servo valve is verified by the simulation results, and the performance degradation law is summarized. The results show that temperature, differential pressure, solid particle diameter and concentration, and opening degree all have an impact on the erosion and wear of direct-drive electro-hydraulic servo valves, in which differential pressure and solid particle diameter have a relatively large impact, and the servo valve must avoid working in the range of high differential pressure and solid particle diameter of 20–40 um as far as possible. This also provides further theoretical support and experimental guidance for the industrial application and life prediction of electro-hydraulic servo valves.

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Section: Introductionmentioning

confidence: 99%

CFD-Based Physical Failure Modeling of Direct-Drive Electro-Hydraulic Servo Valve Spool and Sleeve

Guo-qin

Yang

et al. 2022

Sensors

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“…The ice particles accumulate at the bottom of the ice chamber and are heavily bonded to each other, blocking the outlet and resulting in low ice particle utilization. Abrasive particle size, hardness and mass flow rate have a certain effect on the jet erosion effect 2 , 22 , 24 . Shin et al 23 used the flash principle of liquid drops in a vacuum environment to form tiny ice particles and designed a tiny and fast ice-particle-making system, which consisted of a water supply device, vacuum chamber, steam compressor, steam condenser, and vacuum pump.…”

Section: Introductionmentioning

confidence: 99%

“…However, this method requires too many equipment and is a complex process with high energy consumption, low ice-making efficiency, and no control over ice particle size and temperature. Liu et al 24 found that abrasive hardness is the main factor affecting the erosion effect. Abrasive hardness is quadratically related to erosion depth, and if the particle size is too small or too large, it cannot effectively change the erosion effect.…”

Section: Introductionmentioning

confidence: 99%

Study of a new method for the instant preparation of ice particles in ice abrasive air jet

Zhu

Liu

et al. 2022

Sci Rep

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The ice abrasive air jet is a clean surface treatment technology, which currently has limitations such as high energy consumption, uncontrollable particle size and hardness. Realizing the instant preparation and utilization of ice particles are crucial for solving the energy consumption problem. This paper based on the icing principle of heterogeneous nucleation, proposed a new method of ice making, the heat transfer mechanism of low temperature droplets was studied, and the method was proved to be feasible. Using the FLUENT solidification and melting model combined with the VOF model to calculate the freezing process of droplets, the effects of droplet particle size, initial temperature, and wall temperature on the freezing time were analyzed, and the calculation equation of the freezing time was determined, which was corrected by the icing test results. The results showed that the outside of the droplet freezes first, the liquid–solid boundary is parabolic, and the parabolic concavity increases with time and droplet size. In the freezing process, the larger the droplet size, the longer the droplet phase transition time; the higher the droplet initial temperature, the longer it took to reach the phase transition; the higher the wall temperature, the longer the ice formation time.

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Research on high‐pressure abrasive water jet slotting and pressure relief technology for hard rock roof

Zhenfei,

Wenbin

2024

Energy Science & Engineering

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To solve the problem of severe rock pressure near coal mining face tunnels, a high‐pressure abrasive water jet slotting and roof breaking pressure relief technology is proposed. First, the laneway deformation mechanism and the process of hard rock slotting using high‐pressure abrasive water jets under long‐distance cantilever conditions are analyzed, and the crack initiation conditions of roof strata are obtained. Second, slotting tests under different slotting pressures, nozzle diameters, abrasive particle sizes and slotting times were carried out, and the slotting parameters of a high‐pressure abrasive water jet on a typical roof rock were obtained. Finally, industrial application was carried out in the 81,403 working face of Huayang No.1 Mine. After the hydraulic roof slotting measures were implemented in the test area, the maximum axial force of the anchor cable was reduced to 67 kN, which was 35.5% lower than that of the comparison. The average stress of the coal seam was 15 MPa, which was approximately 25% lower than that of the comparison. The deformation of the tunnel in the experimental area was significantly controlled, with an average movement of 30.0% toward the roof and floor of the tunnel and an average movement of 23.2% toward the two sides of the tunnel. Compared with the movement in the comparison section, the movement toward the roof and floor of the laneway was 42.3% lower, and the movement toward the two sides was 38.2% lower. The industrial application results show that high‐pressure abrasive water jet roof slotting and pressure relief technology can cut off the stress transmission path between the roof rock on both sides, effectively improve the stress state of the surrounding rock of the laneway, reduce the deformation of the roof, floor and two sides of the working face in the later stage of the mining laneway.

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Influence of abrasive hardness on erosion wear of abrasive air jets

Cited by 16 publications

References 44 publications

CFD-Based Physical Failure Modeling of Direct-Drive Electro-Hydraulic Servo Valve Spool and Sleeve

CFD-Based Physical Failure Modeling of Direct-Drive Electro-Hydraulic Servo Valve Spool and Sleeve

Study of a new method for the instant preparation of ice particles in ice abrasive air jet

Research on high‐pressure abrasive water jet slotting and pressure relief technology for hard rock roof

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