利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN102732778A 一种340MPa级深冲用高强度冷轧钢板及其生产方法 有权

一种340MPa级深冲用高强度冷轧钢板及其生产方法
摘要：
本发明涉及一种340MPa级深冲用高强度冷轧钢板及其生产方法，按照质量百分比，含有C：≤0.010%，Si：≤0.060%，Mn：0.30%～0.70%，P：0.030%～0.070%，S：≤0.015%，Als：0.020%～0.080%， N：≤0.0050%，B：0.0002%～0.0012%，余量为Fe和不可避免的杂质。其生产方法为：中包温度控制在液相线温度以上20～60℃；出炉温度1150℃～1250℃；终轧温度850℃～950℃ ，卷取温度650℃～750℃ ；冷轧总压下率控制在50%～80% ；连续退火工序中，均热温度750℃～850℃，缓冷温度600℃～700℃，闪冷温度350℃～450℃。
摘要（英）：

The invention relates to a 340MPa-grade high-strength cold-rolled steel plate used for deep-drawing, and a production method thereof. The steel plate comprises the components of, by mass: no more than 0.010% of C, no more than 0.060% of Si, 0.30%-0.70% of Mn, 0.030%-0.070% of P, no more than 0.015% of S, 0.020%-0.080% of Als, no more than 0.0050% of N, 0.0002%-0.0012% of B, and balance of Fe and inevitable impurities. A production method of the steel plate is that: a middle-ladle temperature is controlled at a value 20-60 DEG C higher than a liquidus temperature; a furnace discharging temperature is 1150-1250 DEG C; a final rolling temperature is 850-950 DEG C; a coiling temperature is 650-750 DEG C; and a cold rolling total reduction rate is controlled at 50-80%. In a continuous annealing process, a soaking temperature is 750-850 DEG C; an annealing temperature is 600-700 DEG C; and a flash cooling temperature is 350-450 DEG C.

公开/授权文献
0/0