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金融界 2024 年 7 月 23 日消息,天眼查知識(shí)產(chǎn)權(quán)信息顯示,鞍鋼集團(tuán)北京研究院有限公司,鞍鋼股份有限公司申請(qǐng)一項(xiàng)名為“一種低屈強(qiáng)比 1100MPa 級(jí)高強(qiáng)鋼及其生產(chǎn)方法“,公開號(hào) CN202410646447.X,申請(qǐng)日期為 2024 年 5 月。
專利摘要顯示,本發(fā)明涉及一種低屈強(qiáng)比 1100MPa 級(jí)高強(qiáng)鋼及其生產(chǎn)方法,鋼板的化學(xué)成分按質(zhì)量百分?jǐn)?shù)計(jì)為:C 0.11%~0.17%、Si 0.5%~0.6%、Mn 1.4%~2.4%、Cr 0.5%~0.6%、Ni 0.8%~1.5%、Mo 0.2%~0.5%、Nb 0.05%~0.06%、V 0.03%~0.07%、Ti 0.01%~0.02%、Al 0.03%~0.05%、Cu 0.8%~1.4%,余量為 Fe 和不可避免雜質(zhì)。本發(fā)明通過合金成分設(shè)計(jì)、控軋控冷與離線兩相區(qū)淬火+低溫回火熱處理工藝控制相組成,最終獲得的鋼板具有高強(qiáng)度與較低的屈強(qiáng)比。
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