两次轧制钢带的深冲缺陷及其消除方法

Deep Punching Defects of Twice Rolled Steel Strips and Its Elimination

研究了最终退火工艺对两种经过两次冷轧和两次退火的低碳钢带在冲制电池壳时产生深冲缺陷的影响。结果表明：两种钢带分别采用６００℃×１６ｈ保温和５６０℃×１２ｈ等温、６４０℃×１２ｈ保温的最终退火工艺可消除它们的深冲缺陷。

The effects of final annealing processe on the deep punching defects occuring when two kinds of lowcarbon steel strips produced by the processes of twice rolling and twice annealing were punched into battery shells have been studied.The results show that the deep punching defects can be eliminated when the two kinds of steel strips adopted the final annealing processes respectively:600℃×16h and 560℃×12h,640℃×12h.