Method for manufacturing hot-dip plated metal strip and apparatus for manufacturing the same

A method for manufacturing a hot-dip plated metal strip comprising:

• introducing a metal strip into a molten metal bath of plating metal to adhere the molten metal onto a surface of the metal strip;
• turning a running direction of the metal strip and then taking the metal strip out from the molten metal bath without applying external force from outside the surface of the metal strip;
• adjusting a plating weight of the molten metal adhered onto the metal strip;
• controlling a shape of the metal strip using magnetic force in a non-contact state directly before or after adjusting the plating weight;
• controlling vibration of the metal strip by contacting at least one roll thereto;
• and
• alloying the metal strip after controlling the vibration of the metal strip.

A method for manufacturing a hot-dip plated metal strip comprising:

• introducing a metal strip into a molten metal bath of plating metal to adhere the molten metal onto a surface of the metal strip;
• turning a running direction of the metal strip using a sink roll and then taking the metal strip out from the molten metal bath;
• adjusting a plating weight of the molten metal adhered onto the metal strip;
• and
• controlling a shape of the metal strip using magnetic force in a non-contact state directly before or after adjusting the plating weight,
• wherein the metal strip is only roll-contacted by the sink roll in the molten metal bath.

A method for manufacturing a hot-dip plated metal strip comprising:

• introducing a metal strip into a molten metal bath of plating metal to adhere the molten metal onto a surface of the metal strip;
• turning a running direction of the metal strip using a sink roll and then taking the metal strip out from the molten metal bath;
• adjusting a plating weight of the molten metal adhered onto the metal strip;
• controlling a shape of the metal strip using magnetic force in a non-contact state directly before or after adjusting the plating weight;
• controlling vibration of the metal strip after adjusting the plating weight of the molten metal by contacting at least one roll thereto;
• and
• alloying the metal strip after controlling the vibration of the metal strip,
• wherein the metal strip is only roll-contacted by the sink roll in the molten metal bath.