PURPOSE: To obtain a metallic carrier having high bonding strength of honeycombs by producing a one sided Al clad steel foil by cold rolling an Al plate on one side of a steel sheet, corrugating the Al clad steel foil, then forming a honeycomb body by winding together with a flat plate foil superposed thereon, and inserting the honeycomb body into an external cylinder.
CONSTITUTION: A steel sheet coil 1 and an Al coil 2 are uncoilded on a reel 6, and an Al plate is bonded to one side of the steel sheet with a rolling mill 4 for cold rolling to form thus a one sided Al clad steel sheet 5, and wound around a coiler 7. The product is then rolled to 30W100μm thickness, and corrugated between a corrugating roll 10, then worked to form a honeycomb body on a honeycomb working machine together with a clad foil 12 which is a flat sheet superposed on the corrugated clad foil 7 as it is. In this stage, an Al surface of the one sided clad foil is arranged to come to an external peripheral side of the honeycomb body. Then, the honeycomb body is inserted into a heat- resisting steel pipe 15, and heat-treated at 1100W1300°C for ≥3min under nonoxidizing condition. Thus, a carrier causing no expansion of clearance is obtd.
YAMANAKA MIKIO
OMURA KEIICHI
AOYANAGI HIKARI
SHIBATA SHINJI
TAKADA TOSHIHIRO
YASHIRO TOSHIYUKI
KASAHARA TERUHIKO
TOYOTA MOTOR CORP
NIPPON KINZOKU CO LTD