| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problem: because a local area electrical heating method related to the background art needs the design/production of a dedicated device specialized in each of a great variety of heated portions, development cost or an equipment investment piles up. <P>SOLUTION: A plurality of electrode pairs forming linear current carrying paths 11-14, 21-24 where a heating target part is an intersection part (an electrode pair 5c6b, 3c3d, 1b7a, 3b4a forming each of the current carrying paths 11-14, and an electrode pair 5c4d, 4b6d, 10b10a, 12b9a forming each of the current carrying paths 21-24) are set as a corresponding electrode pair in each of heating target parts Tg1, Tg2 from among an electrode group 50 where a plurality of electrodes 5 are disposed in a peripheral part of a blank 1, and power from a single power supply is continuously changed over and is sequentially alternately supplied to the corresponding electrode pairs. <P>COPYRIGHT: (C)2013,JPO&INPIT |
