HOT-PRESS FORMING METHOD OF COATED STEEL FOR HOT-PRESS FORMING AND HOT FORMED PATRS PRODUCED BY THE METHOD

摘要

PURPOSE: A hot-press forming method of a coated steel sheet and a hot-press formed part manufactured by the method are provided to prevent the increase of electric resistance and the reduction of weldability by maintaining atmospheric oxygen concentration less than 30% during heat treatment. CONSTITUTION: A hot-press forming method of a coated steel sheet is characterized in that atmospheric oxygen concentration is controlled to be less than 30% during heat treatment, thereby restricting the production of scale and reducing the electric resistance of the steel sheet. The coated steel sheet is a resin nano coated steel sheet which is treated with resin solution.