以高强IF钢(170P1)为研究对象,采用2种不同热轧工艺(常规热轧工艺、铁素体区热轧工艺)及随后相同的冷轧工艺、罩式炉退火及平整工艺进行了工业试制,试制结果表明:采用铁素体区热轧工艺,热轧板预退火及冷轧后,利用罩式炉退火就可保证高强IF钢的r值达2.1,采用这一工艺生产的高强IF钢板在汽车厂生产翼子板等难冲件时合格率可达100%。
Histrength IF steel(170P1) produced by two hot rolling processes(normal and hot rolling in ferrite area) was studied. The results indicate that rvalue of Histrength IF steel hot rolled in ferrites area is up to 2.1. The qualification rate of the wings fabricated from the sheets produced in this way reaches 100%.
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