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CN103233167A 一种耐工业大气腐蚀钢筋及其生产方法 无效 - 撤回

一种耐工业大气腐蚀钢筋及其生产方法
摘要：
一种耐工业大气腐蚀钢筋及其生产方法，属于耐蚀钢筋用钢技术领域。该钢筋的化学成分重量百分数为：C：0.14-0.19%、Si：0.4-0.6%、Mn：0.8-1.2%、P：0.05-0.08%、S＜0.005%、V：0.03-0.07%、Cu：0.32-0.45%、Cr：0.4-0.6%，余量为Fe。生产方法采用转炉初炼＋LF炉精炼＋连铸＋高温开轧+中低温精轧＋分级冷却工艺获得高强度耐工业大气腐蚀用钢。通过合理的成分设计、制定合理连铸和轧制工艺参数抑制单相Cu的表面富集，开发出一种无Ni的经济型Cu-P系耐蚀钢筋。优点在于，利用现有钢种的生产装备，解决了无Ni耐蚀钢的铸坯和轧材表面质量问题，得到的超细晶组织，提高了耐蚀性能，以经济型的成本满足耐工业大气腐蚀钢筋的性能要求，在我国具有十分广阔的推广应用空间。
摘要（英）：

An industrial atmospheric corrosion resistant rebar and a production method thereof belong to the technical field of steel for corrosion resistant rebars. The rebar comprises the following chemical components, by weight C 0.14-0 .19%, Si 0.4-0 .6%, Mn 0.8-1 .2%, P 0.05-0. 08%, S <0.005%, V 0.03-0 .07%, Cu 0.32-0 .45%, Cr 0.4-0 .6%, and the balance Fe. A process of primary melting in a converter + refining in an LF furnace + continuous casting + high temperature open rolling + medium and low temperature finish rolling + grading cooling is adopted in the production method to obtain high-strength industrial atmospheric corrosion resistant steel. Through a rational component design and establishment of reasonable continuous casting and rolling process parameters to suppress surface enrichment of single-phase Cu, so an economical non-Ni Cu-P series corrosion resistant steel is developed. According to the invention, the advantages are as follows: by employing existing steel production equipment, surface quality problems of ingot blanks and mill bars of non-Ni corrosion resistant steel are solved and ultrafine grain structures are obtained, thus improving corrosion resistance, and meeting performance requirements on industrial atmospheric corrosion resistant rebars at economical costs, having a very broad application space in China.

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