INVESTIGATION OF THE PROCESSES OF ACCELERATION, HEATING, 
AND MELTING OF THE PARTICLES OF
REFRACTORY MATERIALS IN GASDYNAMIC CIRCUITS
OF TORCHES FOR FLAME SPRAYING
V. I. Timoshenkoa, I. S. Belotserkovetsa,
V. P. Galinskiia, V. Kh. Kadyrovb,
V. M. Kisel'b, and Yu. I. Evdokimenkob

UDC 533.6.01+621.793

The problems of heating and acceleration of the particles 
of refractory materials to provide the process of high-velocity flame 
spraying are considered. Based on numerical investigations, recommendations 
on selection of fuel components are given. Estimates of the flow rates 
of fuel components and the geometric parameters of a gasdynamic circuit, 
which provide the acceleration and melting of the particles in accordance 
with their size and mass fraction, are presented.

aInstitute of Technical Mechanics, National Academy of Sciences of 
Ukraine and National Space Academy of Ukraine, Dnepropetrovsk, Ukraine; 
email: timoshenko@itm3.dp.ua; 
bInstitute of Problems of Materials Science, National Academy of 
Sciences of Ukraine, Kiev, Ukraine. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 75, No. 2, pp. 36-41, 
March-April, 2002. Original article submitted July 31, 2001.

JEPTER7492020028
JEPTER749208