Mitsubishi Heavy Industries Limited

Yuuji Asahara

Kazuya Tsurusaki

Jae-Young Lee

Kwang-Hee Han

Etsurou Hirai

Kozo Wada

Kyung-Zoon Min

Si-Youl Chun

Jang-Sub Shim

Noi-Ha Cho

Kwang-Hum Han

An alloying system for a galvanized steel sheet, the alloying system using an induction heating coil, wherein an impedance matching apparatus is provided between the induction heating coil and a high frequency power source. The impedance matching apparatus comprises a matching transformer having a plurality of intermediate contact points for arbitrarily selecting a turn ratio, and a switching device for alternative changeover of the intermediate contact point, whereby even when the load impedance of the steel sheet varies, maximum power source output is obtained, such that an appropriate heating temperature necessary for forming an alloy layer of the steel sheet can be supplied.

Impedance matching apparatus for induction heating type galvanized steel sheet alloying system and method

An alloying system for a galvanized steel sheet, using an induction heating coil, wherein the temperature of the steel sheet in an induction heating furnace is measured based on the impedance of a high frequency heater, and the amount of heating is controlled by feedback, to form an alloy layer of the steel sheet.

Alloying system and heating control device for high grade galvanized

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Hiroshima, Japan

Yuuji Asahara