Analysis and optimization of gas-thermal spray process in terms of condensed phase velocity and temperature

被引：15

作者：

Dolmatov, A. V. ^{[1
]}

Gulyaev, I. P. ^{[1
,2
]}

Kuzmin, V. I. ^{[2
]}

Lyskov, E. A. ^{[1
]}

Ermakov, K. A. ^{[1
]}

机构：

[1] Ugra State Univ, Khanty Mansiysk, Russia

[2] Khristianovich Inst Theoret & Appl Mech SB RAS, Novosibirsk, Russia

来源：

THERMOPHYSICS AND AEROMECHANICS | 2017年 / 24卷 / 01期

关键词：

velocity; temperature; thermal imaging control; spectral and brightness pyrometry; condensed phase; thermal spray; coating properties; optimization; process regime;

D O I：

10.1134/S0869864317010097

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The paper presents the experimental results for velocity and tempertaure disibutions of the condensed phase in a plasma jet from the plasmatorch PNK-50 (design from ITAM SB RAS, Novosibirsk). The plasma jet is used at different operational modes for thermal spraying of nickel alloy powder PR-NKh16SR3. The measurements for average velocity (230-280 m/s) and temperature (2290-2410 K) of sprayed particles were matched to data on microhardness (630-710 HV) and porosity (1.7-13.5 %) of samples. Results were transferred into coating properties maps plotted in coordinates "arc current vs. torch offset" and "particle velocity vs. particle temperature". Experiments demonstrated the change in parameters of condensed phase in the jet after performimg of maintenance job for the plasmatorch. We propose the method for adjusting the operational parameters of thermal spraying equipment using optical methods of control for particle velocity and particle temperature. The exemplary apparatus function of the plasmatorch was plotted; an approach is proposed for optimization and transfer of spraying technology of coatings with specified properties between equipment from different manufacturers, different class and power.

引用

页码：83 / 94

页数：12

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