| 摘要 |
<p>PURPOSE: A high-strength cold-rolled steel sheet with superior phosphate treatment property and a manufacturing method thereof are provided to induce selective oxidation due to the surface thickening of the manganese and silicon for processing phosphate in consideration of the proper ratio of silicon and manganese. CONSTITUTION: A manufacturing method of a high-strength cold-rolled steel sheet with superior phosphate treatment property comprises following steps. A high-strength cold-rolled steel sheet is manufactured. The high-strength cold-rolled steel sheet comprises carbon(C) 0.06~1.5 wt%, silicon(Si) 0.03~1.5 wt%, manganese(Mn) 1.0~2.5 wt%, phosphorus(P) 0.08 wt% or less, and the alloy component of the remnant iron(Fe).</p> |
