FIELD: process engineering.
SUBSTANCE: invention relates to heat treatment, for example, high-frequency tempering of metal parts. Proposed device comprises induction heating coils (26) to heat inductively different parts o processed target section (A) in axial direction of blank (12). Note here that blank (12) and coil (26) displace relative to each other in circular direction (R) of processed section (A). Heating coil (26) features zigzag shape with cranked section (34) that opens axially in one direction and cranked section (35) that opens axially in opposite direction and continuously alternate in circular direction (R).
EFFECT: simplified heat treatment of whatever area.
31 cl, 43 dwg
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