Peculiarities of calculation of active resistance of load of inductors designed for disassembling of connections with tension

Abstract

The objects of heating in the inductor during thermal disassembly are most often the female
parts having the shape of a cylinder with a central seating hole (bushings, rollers, rings, half couplings,
gears, bandages, etc.). The main task in the design of the inductor is to provide a high-quality heating up
to a given temperature of the landing surface, which, as a rule, has a cylindrical shape.
The electrical parameters of the inductors intended for thermal disassembly of the
interference connections depend to a large extent on the active resistance of the load. The
magnitude of this resistance is largely determined by the structural features of the heated objects.
On the basis of the analysis of the basic methods for calculating the characteristics of electric
machines, a technique is suggested that takes into account the specificity of the induction equipment.
Comparison of calculation results with experimental studies showed that the proposed
calculation technique is applicable for various methods of closing the magnetic system of the inductor.