一、简介有几位研究者一直在探讨磷对冷轧薄板的深冲性的影响,他们之中,Matsudo 等最近发现磷对值的影响大部分取决于热轧带材中存在的碳化物,这种碳化物用光学显微镜能够观察 I. INTRODUCTION Several researchers have been discussing the effect of phosphorus on the deep drawability of cold rolled sheet. Among them, Matsudo et al. Recently found that the effect of phosphorus on the value depends largely on the presence of carbides in the hot strip, This carbide can be observed with a light microscope