HEAT TREATMENT METHOD FOR AMORPHOUS SOFT MAGNETIC ALLOY AND HEAT TREATMENT DEVICE FOR AMORPHOUS SOFT MAGNETIC ALLOY

摘要

PROBLEM TO BE SOLVED: To provide a heat treatment method for an amorphous soft magnetic alloy capable of subjecting an amorphous soft magnetic material to heat treatment at a stable heat treatment temperature without breaking the same.SOLUTION: Provided is a heat treatment method for an amorphous soft magnetic alloy comprising: a step (a) where a guide part of guiding the belt-like object to be heat-treated into a fluid for heat treatment is contacted with the fluid held to a prescribed temperature, and the fluid is held to a temperature at which the object to be heat-treated is subjected to heat treatment; a step (b) where a belt-like amorphous soft magnetic alloy and a belt-like reinforcing part are connected in the length direction of the belt to form the above object to be heat-treated; a step (c) where, in the object to be heat-treated, only the reinforcing part is immersed into the fluid, and the upper face of the reinforcing part is contacted with the part in the fluid in the guide part; and a step (d) where, with the part in the fluid in the guide part as a guide, while pulling up the reinforcing part from the fluid, the amorphous soft magnetic alloy is immersed into the fluid, and at least a part of the amorphous soft magnetic alloy is crystallized by heat conduction from the fluid.SELECTED DRAWING: Figure 2