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郑柏平 《金属材料与冶金工程》2000,(5):14-17
介绍了渐钢热送热装的基本工艺路线和4个发展阶段;分析了热送热装在降低企业加热炉综合燃耗、减少重油消耗、减少中间坯库存等方面的作用;阐述了企业开展热送热装与促进企业工艺和产品结构优化之间的关系,并结合目前热送热装工作存在的问题,提出了今后研究和工作的方向。 相似文献
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分析比较了实现连铸坯热送热装的几种工艺方案,指出了各工艺方案的实用性,为马钢加铸热送装的实施提供了工艺方案的选择。 相似文献
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根据唐山钢铁公司生产实际 ,在试验的基础上 ,提出了连铸坯热送热装的保证措施 ,摸索出了棒材厂热送热装的工艺模式。 相似文献
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介绍了津西钢铁股份公司热轧窄带钢厂充分利用热装优势的工艺布置及特点,并通过该厂热装热送工艺的实践,介绍了在热送热装中应注意的问题及效果。 相似文献
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探讨了在山西新临钢钢铁有限公司实现连铸坯热送热装工艺的必要性和可能性,提出了实现热送热装工艺的技术方案,并指出了推广实施熟送热装技术应重视的几项工作。 相似文献
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韶钢第二轧钢厂于1996年3月开始采用板坯热送热装工艺,取得了明显效果。本文较全面地介绍了该工艺方案在韶钢三轧厂的提出、确定及应用情况。随着韶钢中板改造工程的完成,板坯热送热装工艺将发挥更大的作用。 相似文献
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本文综述了连铸板坯热送热装和直接轧制工艺在国内外的现状和发展趋势,工结合公司七厂实行热送热装工艺提出了一些参考意见。 相似文献
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介绍了唐钢棒材厂开发热装热送的工艺设计情况及取得的经济效益,同时指出了热装热送工艺存在的问题及解决方法。 相似文献
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基于马钢2 250mm热轧的设备、工艺及信息化系统条件,针对马钢2 250mm热轧生产线,根据不同的热送热装模式,制定了不同的生产组织计划方案,以提高热送热装的比例。 相似文献
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热镀锌双相钢热轧工艺制度研究 总被引:1,自引:0,他引:1
研究了热轧工艺对热镀锌双相钢组织与性能的影响。结果表明,通过调整热轧工艺,可以得到强韧性能配合较好的组织均匀的铁素体-马氏体双相钢。在一定的温度范围内,随着终轧温度和卷取温度的升高,双相钢的屈服强度和抗拉强度有不同程度的下降,而延伸率有所上升。高温卷取易导致热轧基板晶粒粗大并出现带状组织,通过降低卷取温度可有效提高热轧基板组织的均匀性,使热轧基板的晶粒细腻均匀,从而改善热轧带状组织。 相似文献
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SONG Zhi-gang ZHENG Wen-jie FENG Han WU Zhong-zhong GUO Hai-sheng YU Fei 《钢铁研究学报(英文版)》2013,20(8):83-86
By selecting several typical duplex stainless steels (DSS), i. e., 00Cr22Ni5Mo3N, 00Cr21Ni2Mn5N and 00Cr25Ni7Mo4N, as research materials, hot ductility characteristic of DSS was studied by thermal simulation method and microstructure evolution during hot compression was observed through TEM. The results show that the optimum hot ductility temperature range of DSS is 1050–1200°C. 00Cr25Ni7Mo4N exhibits the worst hot ductility and 00Cr21Ni2Mn5N has similar hot ductility to 00Cr22Ni5Mo3N. During hot compression, the dynamic recovery of austenite occurs in DSS while the dynamic recovery and reerystallization of ferrite take place in 00Cr22NioMo3N and 00Cr21Ni2Mn5N, but only the dynamic recovery of ferrite can be observed in 00Cr25Ni7Mo4N. 相似文献
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本文通过对热送铸坯钢板表面裂纹产生的原因进行分析和研究,发现热送铸坯钢板表面裂纹主要在轧制环节中产生;降低铸坯加热炉温度,减少铸坯加热时间等措施可使热装热送铸坯轧制钢板裂纹得到有效控制。 相似文献
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In order to develop a comprehensive understanding of the effect of hot charging temperature on the hot ductility of a Nb‐containing steel, direct hot charging process was simulated by using a Gleeble thermo stress/strain machine. Three kinds of thermal histories were introduced to assess the hot ductility of the steel during continuously cast, hot charging, and cold charging process by means of hot tensile test in relation to surface cracking of hot charging processed steel slabs. The ductility of the specimens charged at the temperature within the range of ferrite/austenite two‐phase region and charged at the temperature just below the Ar1 of the steel is largely reduced. These results can be ascribed to the retained ferrite films at the boundaries of austenite encouraging voiding at the boundaries and these voids gradually link up to give failure around 750°C, and the combination of inhogeneous austenite grain size and precipitations aggravating the ductility trough by encouraging grain boundary sliding at 950°C. The steel via the conventional cold charge process experienced a complete phase transformation from austenite to ferrite and pearlite structure during the cooling to the ambient temperature. This steel can be charged into a reheating furnace and rolled without experiencing hot embrittlement due to the recrystallization and the precipitates are trapped inside a newly formed grain of austenite. In comparison with the hot ductility results, the hot tensile strength is only slight influenced by the charging temperature. 相似文献