Investigation of operating parameters on high-velocity oxyfuel thermal spray coating quality for aerospace applications

Khan, Mohammed N.; Shah, Sohail; Shamim, Tariq

doi:10.1007/s00170-019-03696-0

Cited by 14 publications

(5 citation statements)

References 22 publications

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“…Surface preparation and cleaning are crucial to guarantee adhesion, and selecting the right coating material will ensure good adhesion and chemical affinity. 16,17 The temperature and pressure required for the process need to be compatible with the base material. 18 Elevated temperatures facilitate diffusion but can also affect the microstructure, impacting factors such as grain size, orientation, and crystallinity.…”

Section: Introductionmentioning

confidence: 99%

Nanodiamond-structured zinc composite coatings with strong bonding and high load-bearing capacity

Awasthi,

Prior Palomero,

Srivastava

et al. 2024

Nanoscale Adv.

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Section: Introductionmentioning

confidence: 99%

Nanodiamond-structured zinc composite coatings with strong bonding and high load-bearing capacity

Awasthi,

Prior Palomero,

Srivastava

et al. 2024

Nanoscale Adv.

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“…It is widely used in the aerospace, defense industry, iron and steel metallurgy, petrochemical engineering, and other fields. 1,2 WC-12Co powder is a hard ceramic alloy with the advantages of high hardness, low thermal expansion coefficient, and easy melting. It is an ideal powder material to improve the wear and corrosion resistance of parts, which is widely used in the field of surface strengthening.…”

Section: Introductionmentioning

confidence: 99%

“…Particularly, WC ceramic powder spraying has obvious technical advantages, which often used to prepare the anticorrosion, wear‐resistant, and anti‐oxidative functional coatings. It is widely used in the aerospace, defense industry, iron and steel metallurgy, petrochemical engineering, and other fields 1,2 . WC‐12Co powder is a hard ceramic alloy with the advantages of high hardness, low thermal expansion coefficient, and easy melting.…”

Section: Introductionmentioning

confidence: 99%

Research of numerical simulation for HVAF thermal spraying process on rotational roll

Chang

Chen

Han

et al. 2023

Int J Applied Ceramic Tech

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HVAF thermal spraying has the characteristics of low spraying temperature, high coating density, and strong corrosion resistance. It is widely used in the aerospace, iron–steel metallurgy, national defense and military industry, petrochemical industry, and other fields for manufacturing protection and repair strengthening, which has achieved significant economic benefits. In this study, a numerical model of HVAF thermal spraying on a circular roll was established by the computational fluid dynamics method. The characteristics of the spraying flame, evolution of the gas composition mass fraction, and influence of the spraying parameters on particle flight behaviors were calculated and revealed. Based on the dynamic mesh method, the effect of roll speed on the spraying flame characteristics and particle flight behaviors was analyzed. Calculations show that the spraying flame is extruded at the Laval nozzle and the speed rapidly increases to 805 m/s, which increases to a supersonic speed through the barrel. The flame flow rises rapidly reaching the surface of the roll, which is 780 m/s. The highest temperature is in the combustion chamber, and the flame temperature of the airshed is a damped vibration. The flame covers the surface of the roll to preheat it, and the flame temperature there decreases layer by layer from the inside to outside. The particle diameter significantly effects the powder flight behavior. The flame velocity increases with the barrel length increasing. The flame temperature up to the peak when the barrel length is 190 mm. As the rotation speed of the roll increases, the temperature, velocity, and pressure of the flame flow on the roll surface change in a certain extent. The particle spatter will be increased with the rotational speed increasing of the roll, which little affects the particle temperature.

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“…W et al proposed the use of genetic algorithms (GA) to estimate the robot manipulator position. 21 Authors of two studies 6,22 investigated spray painting applications using oxyfuel thermal spray and oxygenated volatile organic compounds to identify the specific parameters for efficient spray painting. Gohler and Stintz experimentally compared commercial spray painting gun and gravity-based paint spray for airborne particles released during the spray painting application for nano particulate painting.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy logic expert system with multi-objective optimization of carbon nanotube infused nanopaint surface characteristics analysis using IRB 1410 robot

Jakkula

Sethuramalingam

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this investigative study, the Taguchi design (L9) of experiments with TOPSIS multi-objective optimization is used for the robot nanopainting. The optimization objective is to maximize the film glue individually and minimize the surface blemishes and film thickness by varying the IRB 1410 robot painting parameters, such as the robot speed, pressure, and distance. The multi-wall carbon nanotube is infused into the paint materials using the ultrasonication process, and the mechanical properties are analysed with a comparison to regular paint materials. The virtual robot cycle time analysis is carried out for three different robot pathway patterns, namely linear, zig-zag, and circular. It is then compared with real-time experimental robot nanopaint on cold rolled close annealing steel materials. The obtained results show that surface roughness and thickness are minimized by 54% and 33.4%, respectively, using the robot nano spray coating when compared with regular spray coating. The film adhesive of robot Nano spray coating is maximized by 2.8% more than normal spray coating. A fuzzy logic expert system model is used to evaluate the surface finish characteristics of the nanopaint surface with low prediction error and with 89.2% confidence level. Heat transfer analysis of the robot nano-coated substrate is compared with that of the robot normal-coated substrate.

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Investigation of operating parameters on high-velocity oxyfuel thermal spray coating quality for aerospace applications

Cited by 14 publications

References 22 publications

Nanodiamond-structured zinc composite coatings with strong bonding and high load-bearing capacity

Nanodiamond-structured zinc composite coatings with strong bonding and high load-bearing capacity

Research of numerical simulation for HVAF thermal spraying process on rotational roll

Fuzzy logic expert system with multi-objective optimization of carbon nanotube infused nanopaint surface characteristics analysis using IRB 1410 robot

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