HEATING METHOD AND HEATING DEVICE FOR VEHICLE CENTER PILLAR

• Main Authors: NIIHARA MASAMICHI, YAMAZAKI SATOSHI, YAMAMOTO SHINYA, SAKOTA NAOKI, OKUMA SHINOBU
• Format: Patent
• Language: English; Japanese
• Published: 09.07.2020
• Subjects: CHEMISTRY; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; MOTOR VEHICLES; PERFORMING OPERATIONS; TRAILERS; TRANSPORTING

To implement a heating method for a vehicle center pillar, the method being capable of easily changing a thermal history for each portion of the vehicle center pillar in a short time.SOLUTION: A heating method of a vehicle center pillar according to one embodiment of the present disclosure includes a step of inductively heating the vehicle center pillar 10 such that the strength is high in the order of the other portion of a flange section 12e of a first part 12, the flange section 12e of the first part 12, a second part 13, and that the toughness is high in the order of the second part 13, the flange section 12e of the first part 12, the other portion of the flange section 12e of the first part 12 when the vehicle center pillar 10 is tempered. In the induction heating step, a step of inductively heating the flange section 12e of the first part 12 and a step of inductively heating the second part 13 to a higher temperature than the flange section 12e of the first part 12 are included.SELECTED DRAWING: Figure 1 【課題】容易に、しかも短時間で車両用センターピラーの部位毎に熱履歴を変化させることができる車両用センターピラーの加熱方法を実現する。【解決手段】本開示の一形態に係る車両用センターピラーの加熱方法は、車両用センターピラー１０を焼き戻す際に、第１の部分１２のフランジ部１２ｅの他の部分、第１の部分１２のフランジ部１２ｅ、第２の部分１３の順で強度が高く、第２の部分１３、第１の部分１２のフランジ部１２ｅ、第１の部分１２のフランジ部１２ｅの他の部分の順で靭性が高くなるように、車両用センターピラー１０を誘導加熱する工程を備え、誘導加熱する工程では、第１の部分１２のフランジ部１２ｅを誘導加熱する工程と、第２の部分１３を第１の部分１２のフランジ部１２ｅに比べて高温になるように誘導加熱する工程と、を有する。【選択図】図１