냉연강판
 
Cold Rolled Steel has a beautiful surface with an excellent processability. The product is made through the following process: The surface contamination of the cold rolled coil is removed through Purging by Electrolysis line, heated in the annealing furnace at 600~850℃ and maintained for a certain amount of time to secure processability before going through temper rolling process to improve surface and its formation.

Pickling & cold rolling Hot rolled coil went through the pickling process in order to remove the scale. To secure the right material quality for the purpose, rolling continues on until it reaches the right depth.
Purging by Electrolysis This is a process of removing the contamination and the rolling oil through mechanical and chemical reaction by passing the cold rolled steel in through an alkaline solution before annealing.
Annealing(CAL) In order to soften the hardened quality (during cold rolling) of the steel, this process secures the right material quality and the processability through the heat treatment of heating → crack → quenching → slow cooling.
lSPM
(Skin Pass Mill)		 For the adjustment of the illumination intensity and the shape of the coil surface (which completed annealing), the elongation percentage would be at  0.3~3.0%.
Admin Page