| 摘要 |
PURPOSE:To obtain a magnetic core stationarily being stable in product property even if dispersion occurs by noticing that there is dispersion in the property of magnetic ribbons being offered by lots. CONSTITUTION:When heat-treating a magnetic ribbon after winding it, the correction of the heat treatment temperature is decided by measuring the curie temperature of the magnetic ribbon being sampled from among the material lot, and comparing this measured temperature value with curie temperature value corresponding to the heat treatment temperature at the target permeability being made in advance. |
