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介绍了国内外激光毛化冷轧辊的发展和应用情况,比较了喷丸、电火花和激光毛化钢板的表面形貌和使用性能,以及CO2和YAG激光毛化的工艺特点。结合攀钢冷轧厂的设备现状,探讨了攀钢冷轧辊激光毛化的可行性并提出了相关建议。 相似文献
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介绍了国际上最先进的多棱镜扫描分光式单头多光点高功率激光毛化技术,并对单头双点CO2激光毛化设备的结构及性能指标进行了详细介绍,针对该激光毛化设备的有序及无序毛化工艺进行了研究。 相似文献
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激光毛化冷轧辊技术是80年代末世界上兴起的一项高新技术,目前世界上只为比利时、日本、德国所掌握.这一技术是通过激光对磨光的冷轧辊表面进行毛化处理,以提高轧辊表面硬度,延长其使用寿命。这种轧 相似文献
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利用光纤激光毛化系统对轧辊进行了毛化试验,研究了激光毛化参数对毛化点阵和粗糙度的影响,并尝试开发了激光无序毛化工艺。研究结果表明,激光有序毛化工艺条件下,毛化点尺寸、形态一致,呈现火山口形貌。激光功率、脉冲频率和脉冲占空比对毛化点尺寸有较大的影响,而激光功率、脉冲占空比和侧吹气体流量对毛化粗糙度具有明显的作用。采用脉冲频率调制的方式实现了光纤激光无序毛化工艺。无序毛化后,冷轧线工作辊表面粗糙度约为2.2μm,毛化峰值密度在75cm-1以上;镀锌线光整机工作辊粗糙度约为3.2μm,毛化峰值密度在85cm-1以上,平均峰值密度达到了95cm-1。所开发的激光无序毛化工艺已应用于实际生产。 相似文献
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通过对比分析电火花和激光毛化工艺原理,对无序毛化工艺进行了探究,并完成了首次工业化尝试生产。对不同毛化后的铝板表面形貌进行分析的结果表明,通过合理的激光毛化工艺设计,可以获得无序表面形貌的铝板。并且毛化后的铝板表面在具有较高粗糙度的情况下,可进一步提高峰值密度数,其数值可以达到140以上,大大提高了铝板的冲压性以及涂漆性能。与传统的电火花毛化技术相比,激光无序毛化技术具有更大的技术优势,值得推广应用。 相似文献
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YAG激光毛化原理及其在冷轧辊上的应用 总被引:1,自引:0,他引:1
激光毛化技术在现代工业中的应用极为广泛,其生产的激光毛化板具有良好的延伸率和深冲性,是汽车、家电、电子器件和装饰板的优良材料,本文从本钢冷轧厂激光毛化设备结构入手,对其原理及功能做了细致的分析,并对激光毛化在冷轧上的应用进行了深入的研究。 相似文献
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激光毛化技术在八钢冷连轧机组的运用 总被引:2,自引:0,他引:2
介绍了新疆八一钢铁股份公司冷轧厂运用激光毛化技术,产品质量得到了提高。板面粗糙度达到用户的使用要求,板面质量得到了改善、减少了退火粘接,延长了换辊周期。 相似文献
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介绍了炉顶煤气循环—氧气鼓风高炉炼铁技术的研发进展,阐述了碳捕捉及封存技术(CCS)的特点及其技术成熟度,重点分析了几种CO2分离方法的原理及其适用条件,最后应用IPCC2006方法计算分析了结合碳捕捉及封存技术的炉顶煤气循环氧气鼓风高炉的CO2减排效果。结果表明:新工艺的吨铁CO2排放量为582.40kg,较传统高炉CO2减排55%。结合碳捕捉及封存技术的炉顶煤气循环氧气鼓风高炉炼铁技术的开发,能够促进中国钢铁工业CO2减排,对钢铁工业的可持续发展具有十分重要的现实意义和深远影响。 相似文献
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A series of the coconut activated carbons(CAC) based absorbents modified with Cu and Ce(Cu/CAC,Cu/Ce/CAC) were prepared by impregnation technology for carbon dioxide capture.The adsocrption equilibriums of CO2 on Cu/CAC and Cu/Ce/CAC were measured.The results showed that the adsorption capacity of CO2 onto the activated carbon modified with Cu/Ce increased with the decreasing temperature in the same pressure.The adsorption capacity of CO2 on Cu/CAC was higher than that of the blank CAC,and compared with the Cu/CAC,the adsorption capacity of CO2 of Cu/Ce/CAC with the mass ratio of Cu/Ce=30 was improved at 298 and 303 K.In addition,the adsorption equilibrium data for CO2 at various temperatures was fitted to Langmuir,Freundlich and D-R isotherm models.It was found that the D-R equation was the best model for fitting the adsorption data on Cu/Ce/CAC at different temperatures. 相似文献
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WANG Rong- yue YUAN Zhang- fu XIE Shan- shan LI Jian- min NAN Hai ZHAI Jun 《钢铁研究学报》2018,30(11):874-880
Decarbonization and chromium conservation technology is mainly achieved by blowing O2 and Ar during the traditional AOD furnace smelting process. The CO2 emissions per ton of steel production in the steel industry are about 1. 57t. If the CO2 emissions can be collected and recycled in the steel production process, it can not only save energy and reduce emissions, but also reduce the cost of smelting. The feasibility of using CO2 instead of Ar or O2 to be injected for smelting stainless steels was verified by thermodynamic calculations. The reaction limits of the different carbon content, the rising and falling temperature of elemental oxidation, the reaction rate under different ratios of CO2 injection, the depth of decarburization, and the result of chromium retention were also calculated. The thermodynamic mechanism of blowing CO2 to replace O2 decarburizing and protecting chromium was analyzed. The results show that blowing CO2- O2 mixed gas in high carbon zone is conducive to decarbonization and chromium conservation in the AOD smelting process. With the increase of CO2 ratio, the effect of chromium retention is enhanced whereas the decarburization rate is reduced. When the CO2 injection amount is increased, the decarburization reaction rate in the molten pool is too slow, causing the molten pool temperature to be low, and the CO2 injection ratio should be controlled between 20 vol.% and 40 vol.%. 相似文献
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氢冶金是钢铁工业减少CO2排放的有效方法之一。但当前大规模制氢仍然依靠化石燃料,因此,即使采用氢冶金总量减排不明显。利用钢铁企业的含能气体制氢或“可燃冰”制氢可以为氢冶金提供氢源并能减少CO2排放。探讨了低温氢冶金的关键技术。同时还研究了碳-氢熔融还原工艺。为氢冶金技术的发展奠定了一定的理论基础。 相似文献