The kinetics of induction heating for surface quenching of steel depend on factors: 1) which induce changes in the electric and magnetic parameters of steels as the result of the increased temperature (these changes lead to changes in the amount of absorbed heat at a given intensity of the electric field at a given induction current) and, 2) on factors which are responsible for the change of the intensity of the electromagnetic field during heating (i.e., change of the current in the inductor).
Induction heating in the heat treatment of automobile parts was first used at our plant. In 1937-1938 surface quenching of the necks of crank shafts of the ZIS-5 engine was developed at our plant in collaboration with the staff of the V. P. Vologdin laboratory. The equipment was installed as part of the continuous production line,in which the parts were subjected to mechanical treatment on semi-automatic high-frequency apparatus. More than 61% of alt the parts of the engines of ~ae ZIL-164A and ZIL-157K automobiles are surface hardened by induction heating.
The kinetics of induction heating for surface quenching of steel
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