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发明公开
CN107043889A 一种汽车焊管用冷轧窄带钢及其制备方法 无效 - 驳回

一种汽车焊管用冷轧窄带钢及其制备方法
摘要：
本发明公开了一种高强度汽车焊管用冷轧窄带钢及其制备方法，其所述冷轧窄带钢化学成分按重量百分比计包含：C：0.10％‑0.20％，Si：0.05％‑0.50％，Mn：1.15％‑1.75％，S：≤0.035％，P：≤0.035％，0.025％≤V≤0.06％，N：≤0.006％，O：≤0.004％，其余为铁Fe和不可避免的杂质。本发明的冷轧窄带钢厚度规格在0.5‑2.0mm，宽度范围为180‑480mm，经冷弯成型、高频焊接后生成的汽车结构用方矩形管，屈服强度在700MPa以上，延伸率在10％以上，替代大厚度的方矩形管，可满足国家汽车轻量化的要求，提高材料的利用率。
摘要（英）：

The invention discloses cold-rolled ribbon steel for an automobile welded pipe and a preparation method of the cold-rolled ribbon steel. The cold-rolled ribbon steel comprises the chemical components of, by weight, 0.10-0.20% of C, 0.05-0.50% of Si, 1.15-1.75% of Mn, 0-0.035% of S, 0-0.035% of P, 0.025-0.06% of V, 0-0.006% of N, 0-0.004% of O, and the balance Fe and unavoidable impurities. The thickness specification of the cold-rolled ribbon steel is from 0.5 mm to 2.0 mm, the width range is from 180 mm to 480 mm, an automobile structure square rectangular pipe generated through cold roll forming and high-frequency welding is 700 MPa or above in yield strength and 10% or above in ductility to replace a high-thickness square rectangular pipe, the requirement for national automobile lightweight can be met, and the utilization rate of materials is improved.

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