SEMI-ALLOYED HOT-ROLLED HOT-DIP GALVANIZING STEEL SHEET HAVING EXCELLENT WORKABILITY AND COATING ADHESION AND METHOD FOR MANUFACTURING THE SAME

摘要

The present invention relates to a semi-alloyed hot-rolled hot dip galvanizing steel sheet having excellent workability and plating adhesion having the same properties as an alloyed steel sheet without a separate alloying treatment after hot dip galvanize and high surface roughness; and a method to manufacture the same. To achieve this, the method to manufacture the semi-alloyed hot-rolled hot dip galvanizing steel sheet having excellent workability and plating adhesion of the present invention comprises: a step of preparing a hot-rolled steel sheet; a step of cracking the hot-rolled scale of the hot-rolled steel sheet; a step of removing the hot-rolled scale with a shot blasting treatment on the hot-rolled steel sheet; and a step of hot-rolled hot dip galvanizing the hot-rolled steel sheet by immersing the hot-rolled steel sheet in a plating tub.