| 摘要 |
PURPOSE: A color steel material manufacturing method is provided to form various color layers on a nitride coating film formed on the surface of a steel material without taking the steel material out of a furnace. CONSTITUTION: A color steel material manufacturing method comprises the steps of: buffing a steel material(P100), inserting the buffed steel material into a furnace and nitriding the steel material(P200), cooling the steel material(P300), coating the steel material with transparent ceramic paint(P400), and plasticizing the steel material(P500). [Reference numerals] (AA) Steel material; (BB) Color steel material; (P100) Buffing; (P200) Nitriding steel material inserted in furnace; (P300) Cooling; (P400) Coating with transparent ceramic paint; (P500) Plasticizing |
