FIELD: construction.
SUBSTANCE: method to compact porous products includes loading products into a reaction chamber with induction coils, submersion of products and coils into a liquid precursor of compacting material, induction heating of products to temperature sufficient to generate steam, subsequent pyrolysis of steam and deposition of compacting matrix material in pores of products. Induction heating of porous products includes efficient control of power of AC current supplied to coils. Control of applied power is carried out in compliance with dynamic changes of electric characteristics of a porous product to be compacted, as it is compacted. Periodically frequency of alternating electric current supplied to induction coils is measured, difference of measured frequencies of supplied AC current is calculated, and the according calculated value is compared to frequency variation setpoint. Control of supplied level of current power is carried out in accordance with comparison of according calculated variation of frequency with frequency variation setpoint.
EFFECT: improved efficiency of the method.
10 cl, 27 dwg
