冷变形工艺对IF钢深冲性能的影响

研究了IF钢经铁素体区热轧后的后续冷变形工艺,提出了两次冷轧及两次退火的新工艺·实验结果表明,用此新工艺获得的rm值明显高于传统的一次冷轧及一次退火工艺,r值在不同方向上表现出的规律性因冷变形工艺而异·通过控制冷变形率在两次冷轧中的分配方式,可以使有利于材料深冲性能的因素获得良性遗传·

Effect of Cold Rolling Technology on Drawability of IF Steel

The subsequent cold deformation of IF steel after hot rolling in ferrite region was investigated. A new technology of twice cold rolling and twice annealing was used. The experimental results showed that r m value acquired from the new technology is obviously higher than the traditional once cold rolling and once annealing. The regularity of r value in various direction is different with the cold deformation processes. By controlling the distribution of reduction during twice cold rolling, the favorable factors for material's drawing property could be well inherited.