Electric heating – Metal heating – For bonding with pressure
Patent
1995-11-01
1998-06-16
Nguyen, Matthew V.
Electric heating
Metal heating
For bonding with pressure
295277, B23K 1100, B21B 146
Patent
active
057674752
ABSTRACT:
To provide a hot rolling method capable of improving the yield ratio by reducing material loss and improving productivity and quality accuracy of rolled products, the hot rolling method according to the present invention consists of putting the front end face of the subsequent rolled material in contact with the rear end face of the preceding rolled material by setting the feed speed of the material rolled by the roughing-down mill faster than the feed speed of the material rolled by the intermediate rolling mill while holding the rear end of the preceding rolled material being rolled in the intermediate rolling mill with the holding member on one side and holding the front end of the subsequent rolled material being rolled in the roughing-down mill with the holding member on the other side, welding both rolled materials between the roughing-down mill and the intermediate rolling mill by performing contact resistance heating with the application of voltage to the contact faces of both rolled materials through said holding members, and continuously rolling the welded rolled materials with the intermediate rolling mill and the finishing mill to form them into bar steel, wire rod, bar-in-coil, etc.
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patent: 5463801 (1995-11-01), Kajiwara et al.
patent: 5564178 (1996-10-01), Takashima et al.
Kyoei Steel Co., Ltd.
Nguyen Matthew V.
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