The impact of technological parameters of the torch to physical and chemical properties of a gas-thermal burner for spraying ultra-high molecular weight polyethylene
Skakov M.K. Ocheredko I.A. Bayandinova M.B. Tuyakbaev B.T.
27 October 2022al-Farabi Kazakh State National University
Physical Sciences and Technology
2022#9Issue 259 - 68 pp.
The values of the heat flux density, transverse and longitudinal temperature gradients of the gas-thermal burner torch, the type of reaction during the combustion in various modes (reducing, neutral, oxidizing) depending on the mass fractions of the fuel and oxidizer burning have been determined in this paper. The significant role of the torch temperature as one of the most important parameters determining the quality of polymer coatings obtained by the gas-thermal method has been established. A spatial model of a gas-thermal burner has been designed, which allows to obtain thermal modes at specified technological parameters. A physical model of the interactions “torch-polymer particle”, “thermal jet – base” has been developed. The necessary density of the torch heat flux for the complete melting of ultrahigh molecular weight polyethylene (UHMWPE) particles not exceeding the temperature threshold of destruction has been determined. The required rate of introduction the UHMWPE powders into the burner flame has been also determined. Based on the calculations of the “torch-polymer particle interaction”, the optimal geometry of the torch, the particles trajectory in the torch and the spraying distances have been determined.
destruction , finite element method , gas-thermal spraying , High-Velocity Air-Fuel technology , ultra-high molecular weight polyethylene
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The Republican State Enterprise «National Nuclear Center of the Republic of Kazakhstan» of the Ministry of Energy of the Republic of Kazakhstan, Kurchatov, Kazakhstan
Sarsen Amanzholov East Kazakhstan University, Ust-kamenogorsk, Kazakhstan
The Republican State Enterprise «National Nuclear Center of the Republic of Kazakhstan» of the Ministry of Energy of the Republic of Kazakhstan
Sarsen Amanzholov East Kazakhstan University
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