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

Li, Zhiping; Zhu, Ying; Liu, Yong; Cao, Chenxu; Wu, Jiaojiao; Huang, Fei

doi:10.1038/s41598-022-22409-4

Cited by 3 publications

(1 citation statement)

References 37 publications

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“…For the current ice particle preparation and storage problems of ice particle jet technology, the authors proposed the ice particle preparation technology with controllable particle size and hardness based on the concept of instant preparation and instant utilization of ice particles 18 , and used a jet pump injector to instantly eject and accelerate the ice particles to realize the integration of ice particle preparation and utilization, which solves the problem of uncontrollable particle size of the ice particles, and avoids the problems of adhesion and high energy consumption due to the storage of the ice particles. And the efficient injector performance is the key to determine the instant utilization of ice particles and the effect of jet surface treatment.…”

Section: Introductionmentioning

confidence: 99%

Study on the key parameters of ice particle air jet ejector structure

Man,

Zehua,

LIU

2024

Preprint

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The existing ice particle jet surface treatment technology is prone to ice particle adhesion during application, which seriously affects the surface treatment efficiency. Based on the basic structure of the jet pump, the ice particle air jet surface treatment technology is proposed for the instant preparation and utilization of ice particles, which solves the problem of ice particle adhesion and clogging. In order to realize the efficient utilization of ice particles and the high-speed jetting of ice air jet, the integrated jet structure of ice particle ejection and acceleration was developed. The influence of the working nozzle position (Ld), expansion ratio (n) and acceleration nozzle diameter ratio (Dn), length-to-diameter ratio (Ln) on the ice particle ejection and acceleration was systematically studied, and the structural parameters of the injector were determined with the impact kinetic energy of ice particles as the comprehensive evaluation index, and the surface treatment test was carried out to verify the results. The results of the study show that: under 2 MPa air pressure, the ejector nozzle parameters of n = 1.5, Dn=4.0, Ld=4, Ln=0 mm, can be sufficiently ejected to accelerate the ice particles. The structure parameters of the aluminum alloy plate depainting test, can obtain a larger radius of paint removal and make the aluminum alloy plate surface smoother, aluminum alloy surface roughness from 3.194 ± 0.489 m to 1.156 ± 0.136 m. The immediate preparation and utilization of ice particles, solved the problem of ice particles in the engineering application of air jet technology, ice particles bonding and storage problems. The instantaneous preparation and utilization of ice particles solves the problems of ice particle adhesion and storage in the engineering application of ice particle air jet technology, and can provide a feasible technical method in the field of material surface treatment.

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Section: Introductionmentioning

confidence: 99%

Study on the key parameters of ice particle air jet ejector structure

Man,

Zehua,

LIU

2024

Preprint

Self Cite

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Experimental study on the freezing process of water droplets for ice air jet technology

Jingru,

Jingbin,

Zhongwei

et al. 2024

Sci Rep

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Ice air jet technology is one non-destructive, residue-free and environmentally friendly machining process. It is an efficient method to form ice particles by atomizing water droplets in ultra-low temperature environment. The freezing characteristics of water droplets in cryogenic gas and liquid nitrogen environment are visually analyzed, and the effects of droplet volume, ambient temperature are also studied. The results show that when water droplets freeze in a cryogenic gas environment, four distinct stages are observed, namely pre-cooling stage, recalescence stage, solidification stage, and deep cooling stage. However, when water droplets freeze in liquid nitrogen, the recalescence stage cannot be observed. For a 5 µl water droplet, it takes 68 s for water droplets to freeze into ice particles at − 20.36 °C, while it takes only 1.7 s in liquid nitrogen. During the freezing process, the water droplets form an ice shell outside and freeze inwardly. Ice particles may break up due to differences in solubility and density. With the increase of volume the time spent on pre-cooling stage and freezing stage both increases. For the large latent heat of water phase transformation, the solidification stage time is greatly affected by the volume of water droplets. When the ambient temperature drops from − 10.67 °C to − 24.68 °C, the freezing time of 5 µl water droplets decreases by 45.5%, indicating that the ambient temperature has a great influence on the freezing time. The results of the study can significantly contribute to the development of ice air jet technology.

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Study on the key parameters of ice particle air jet ejector structure

Man,

Zehua,

Liu

2024

Sci Rep

View full text Add to dashboard Cite

Existing ice particle jet surface treatment technology is prone to ice particle adhesion during application, significantly affecting surface treatment efficiency. Based on the basic structure of the jet pump, the ice particle air jet surface treatment technology is proposed for the instant preparation and utilization of ice particles, solving the problem of ice particle adhesion and clogging. To achieve efficient utilization of ice particles and high-speed jetting, an integrated jet structure for ice particle ejection and acceleration was developed. The influence of the working nozzle position (Ld), expansion ratio (n), and acceleration nozzle diameter ratio (Dn) length-to-diameter ratio (Ln) on the ice particle ejection and acceleration was systematically studied. The structural parameters of the ejector were determined using the impact kinetic energy of ice particles as the comprehensive evaluation index, and the surface treatment test was conducted to verify the results. The study shows that under 2 MPa air pressure, the ejector nozzle parameters of n = 1.5, Dn = 4.0, Ld = 4, and Ln = 0 mm can effectively eject and accelerate the ice particles. The aluminum alloy plate depainting test obtained a larger paint removal radius and resulted in a smoother aluminum alloy plate surface, reducing the surface roughness from 3.194 ± 0.489 μm to 1.156 ± 0.136 μm. The immediate preparation and utilization of ice particles solved the problems of adhesion and storage in the engineering application of ice particle air jet technology, providing a feasible technical method in the field of material surface treatment.

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

Cited by 3 publications

References 37 publications

Study on the key parameters of ice particle air jet ejector structure

Study on the key parameters of ice particle air jet ejector structure

Experimental study on the freezing process of water droplets for ice air jet technology

Study on the key parameters of ice particle air jet ejector structure

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