材料期刊网

因首钢迁钢2 160mm热轧生产机组不能生产（1.5～1.6）mm×（940～1 400）mm薄窄规格SPA-H高强耐候钢,为保住战略客户,首钢采用冷轧工艺在顺义冷轧开发生产此钢种的薄窄规格产品。介绍了冷轧工艺开发SPA-H耐候钢的方法和过程,首先将热轧带钢通过酸轧机组生成冷硬带钢,冷硬带钢再通过连续退火机组生成最终冷轧产品,通过优化酸洗、轧制、碱洗、退火、平整等工艺,首钢顺义冷轧成功生产出冷轧SPA-H产品。该产品具有强度高、延伸好的特点,用该产品制造的集装箱完全可满足用户要求,可替代同品种的热轧卷板。

As the thin and narrow specifications（1.5-1.6） mm×（940-1 400） mm SPA-H high-strength weathering steel cannot be produced by the 2 160 mm hot rolling mill of Shougang Qiangang,in order to retain strategic customers,Shougang developed cold-rolled process to manufacture those productions in Beijing Shougang Cold Rolling Co.,Ltd.The production methods and processes of developing SPA-H high-strength weather-resisting steel were introduced.Firstly,the hot strips go through pickling line and tandem cold mill（PLTCM）,and the un-annealed cold strips are gained;Secondly,the un-annealed cold strips turn into cold rolled strips by continuous annealing line（CAL）,then the finished product is got.The cold annealed SPA-H high-strength weather-resisting steel was produced successfully by the process optimization of pickling,rolling,alkaline cleaning,annealing and tempering.The product has high strength and good extension,and the steel-made container can fully meet the requirement of custom,so the same assortment hot rolled coil strip can be replaced by it.