To provide an apparatus for manufacturing a galvannealed steel sheet in which a playting nonuniformity in the transverse direction of the steel sheet can be iomproved and thereby the degree of alloying in the transverse direction of the stainless steel can be uniformed by preventing the alloying defect near the edges of the steel sheet and reducing the warping of the steel sheet in a plating restriction section.
The apparatus for manufacturing the galvannealed steel sheet comprises a plating restriction device and an an electromagnetic induction heating alloying furnace arranged above the device. A flame burner which blows combustion gas and air for combustion from a tangent direction of the tubular burner is disposed below the electromagnetic induction heating alloying furnace movably to a position corresponding to the neighborhood of each edge of both sides of the steel sheet.
IWABUCHI MASAHIRO
SUZUKI KATSUICHI
OKADA KUNIAKI
OTANI DAISUKE
