PURPOSE:To obtain a titled thin steel sheet having good workability with a new process without including cold rolling and recrystallization annealing by specifying rolling conditions and coiling conditions in a stage for rolling a low carbon steel to a prescribed sheet thickness. CONSTITUTION:The low-carbon steel is finished in the temp. range of the Ar3 transformation point or below and =500 deg.C and at =35% draft and =300 s-1 strain rate in at least one pass in finish rolling in the stage of rolling the low- carbon steel to the prescribed sheet thickness. The resulted steel sheet is coiled and is then held for =1 minute at 200-500 deg.C. The thin steel sheet having the good workability and the excellent ridging resistance and aging resistance is thus obtd. as-rolled without executing not only the conventional cold rolling but also recrystallization annealing by the high draft and high strain rate rolling in the above-mentioned temp. range followed by the coiling and holding and holding treatment at the above-mentioned temp.
展开▼
机译：目的：通过在将低碳钢轧制到规定的板厚的阶段中指定轧制条件和卷取条件，以新工艺获得具有良好可加工性的标题薄钢板，而无需进行冷轧和重结晶退火。组成：低碳钢是在高温下完成的。在低碳轧制阶段的精轧中，至少一次通过Ar3相变点或更低的范围，且≥500℃，拔模率≥35％，应变率≥= 300 s -1钢到规定的板材厚度。将所得的钢板卷取，然后在200-500℃下保持≥= 1分钟。因此，获得了具有良好的加工性以及优异的耐起皱性和耐时效性的薄钢板。在上述温度下，不仅不进行常规的冷轧，而且不进行因高拔模率和高应变率轧制而进行的再结晶退火。然后在上述温度下进行卷取和保持处理。
展开▼
