A New Spray Approach to Produce Uniform Ultrafine Coatings

Qian, Lijuan; Song, Shaobo; Li, Xiaolu

doi:10.1155/2018/8978541

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…Some experimental and numerical studies [1][2][3] of pneumatic atomizers were carried out in recent years, which focused mainly on droplet size distribution, droplets, or the airflow velocity in the flow field. Although Ye [3] studied the effect of shaping air pressure on the liquid film thickness distribution on the plate, and studies [4][5][6][7][8][9][10][11] of other air spray atomizers on overspray were also performed, the influence mechanism of shaping air holes of pneumatic nozzles on overspray was not thoroughly explored.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Influence of Shaping Air Holes on Atomization Performance in Pneumatic Atomizers

Qian

Song

et al. 2019

Coatings

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In pneumatic atomizers, the shaping air holes play an important role in the spraying system. The pressure and intersection of shaping air holes are the two most important parameters in engineering. In this paper, the Euler–Lagrangian method is used to describe the two-phase spray flow. The spraying process of the pneumatic nozzle is simulated numerically, and the experiment is designed to verify this simulation. By setting different air pressures and distances between the intersection and the paint hole, target surface pressure and droplet size distribution are investigated in detail, in order to explore the relationship between shaping air holes in pneumatic nozzles and overspray. From the results of the numerical simulation, it is found that an increase in the distance between the intersection and the paint hole increases the gas velocity at the central axis of the nozzle and the central pressure of the target surface, the droplet size becomes larger, and the distribution of droplets is more concentrated on the target surface, which easily leads to overspray. With the increase in the pressure of the shaping air holes, the central pressure of the target surface decreases, and the ovality of the spraying pattern on the target surface increases.

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Section: Introductionmentioning

confidence: 99%

Numerical Study on the Influence of Shaping Air Holes on Atomization Performance in Pneumatic Atomizers

Qian

Song

et al. 2019

Coatings

Self Cite

View full text Add to dashboard Cite

show abstract

Review of coating and curing processes: Evaluation in automotive industry

et al. 2022

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The paint shop plant, as the largest energy consumer in the automotive manufacturing process, requires special attention to optimize energy efficiency and thermal management, reduce environmental impact and diminish the total costs to improve marketability. The current review covers the description of the automotive paint shop, recognition of the paint film layers, characterization of the paint spray applicators and evolution of their technology's advancement, explanation of the coating processes development, and investigation of the curing ovens thermal procedure in an automotive production stage. After systematically recalling pioneering studies dealing with the coating techniques and the ovening strategies, this paper focuses on reviewing recent findings conducted with improved modern methods in this subject area for higher sustainability and efficiency. Critical performance factors in developing surface durability, corrosion protectivity, paint material consumption, and environmental pollution are discussed. Focus is brought to the electrostatic spray-painting procedure flow physics understanding, particularly the complicated three-dimensional behaviors of paint droplets formation, distribution, control and deposition on the body in constructed spray plums. Then, the baking and drying process of the produced film layer in the curing oven is precisely reviewed. The review additionally aids in the identification of knowledge gaps in the literature that should be addressed in future research.

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A New Spray Approach to Produce Uniform Ultrafine Coatings

Cited by 2 publications

References 14 publications

Numerical Study on the Influence of Shaping Air Holes on Atomization Performance in Pneumatic Atomizers

Numerical Study on the Influence of Shaping Air Holes on Atomization Performance in Pneumatic Atomizers

Review of coating and curing processes: Evaluation in automotive industry

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