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发明公开
CN110343964A 一种屈服强度大于500MPa的搪瓷用冷轧钢板及其生产方法 有权

一种屈服强度大于500MPa的搪瓷用冷轧钢板及其生产方法
摘要：
本发明提供了一种屈服强度大于500MPa的搪瓷用冷轧钢板及其生产方法，所述屈服强度大于500MPa的搪瓷用冷轧钢板包括以下重量百分比的化学成分：C：0.10％～0.15％；Si≤0.03％；Mn：1.0％～1.5％；P≤0.015％；S：0.010％～0.030％；Als：0.010％～0.060％；Ti：0.060％～0.100％；N：0.0030％～0.0120％；B：0.0010％～0.0090％，余量为铁及不可避免的杂质，本发明通过合理的化学成分设计，并通过热轧、酸洗、冷轧、脱脂、连续退火、平整工序生产出屈服强度大于500MPa的搪瓷用冷轧钢板。按此方法生产的冷轧钢板，力学性能的屈服强度≥500MPa，抗拉强度580～680Mpa，A50延伸率≥16％，氢渗透时间大于等于15min，产品搪瓷后，具有优异的抗鳞爆性能和密着性能。
摘要（英）：

The invention provides a cold rolled steel sheet with yield strength being greater than 500 MPa for enameling and a production method thereof. The cold rolled steel sheet with yield strength being greater than 500 MPa for enameling is prepared from the following chemical components in percent by weight: 0.10-0.15% of C, less than or equal to 0.03% of Si, 1.0-1.5% of Mn, less than or equal to 0.015% of P, 0.010-0.030% of S, 0.010-0.060% of Als, 0.060-0.100% of Ti, 0.0030-0.0120% of N, 0.0010-0.0090% of B and the balance ferrum and inevitable impurities. The cold rolled steel sheet with yield strength being greater than 500 MPa for enameling is produced by steps of hot rolling, pickling, cooling, degreasing, continuous annealing and leveling through a reasonable chemical component design. The cold rolled steel sheet produced by the method has the mechanical properties as follows: the yield strength is greater than or equal to 500 MPa, the tensile strength is 580-680 Mpa, the A50 ductility is greater than or equal to 16%, and the hydrogen penetration time is longer than or equal to 15 min. An enameled product has excellent fishscaling resistance and adhering performance.

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