共查询到18条相似文献,搜索用时 140 毫秒
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转子是超超临界汽轮机的重要部件,转子材料及锻件的发展是支撑超超临界汽轮机及电站技术进步的基础。随着超超临界机组蒸汽温度从620℃提高至630℃,甚至未来到650℃和700℃,汽轮机高中压转子耐热材料及锻件的制造将是要面临的主要挑战之一。综述了中国超超临界汽轮机高中压转子耐热材料的发展历程、设计思路及研制进展,重点介绍了中国630~700℃超超临界汽轮机高中压转子系列自主研制的耐热材料C630R、C650R、C700R及其锻件研制的最新进展,并展望了高中压转子锻件的未来研究和发展重点,以期助力加速中国超超临界汽轮机的完全自主化进程。 相似文献
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提高火力发电厂机组热效率的有效方法是提高蒸汽压力和温度参数。因此,在发展出超临界机组的前提下,发展超超临界机组是必然的。文章综述了国内外超超临界技术的发展历程和技术特点,同时对未来发展方向作了简要介绍。指出了发展超超临界机组应该关注经济问题、金属材料的发展,着重介绍了超超临界锅炉用新型铁素体和奥氏体钢种的发展情况和部分新钢种的高温性能。 相似文献
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针对我国超超临界机组用钢发展趋势,简要介绍了我国国产新型耐热铜开发、研制的现状,分析了国产化的成效和作用,以及电力行业推动国产化的进程,对现阶段新型耐热钢材料国产化的重要意义。明确指出:加强质量监督管理,倡导安全准入规则,加速新型耐热铜的国产化。 相似文献
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本文总结了过去10年中国研究、试制和批量生产超(超)临界火电机组用P92、S30432和S31042锅炉钢管的进程,重点研究了中国在P92、S30432和S31042钢管最佳化学成分配比和最佳热处理制度确定上的主要技术突破,探讨了锅炉钢长期服役过程中的组织稳定性问题,介绍了P92、S30432和S31042钢管工业试制进展及其在中国600oC蒸汽参数超超临界火电机组上的应用前景。技术进步的结果表明,中国已基本掌握了P92、S30432和S31042钢管的生产制造技术,并正在形成批量供货的能力。 相似文献
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介绍了1996年国家监督抽查高压用无缝钢管圆管坯、电工用热轧硅钢薄钢板、汽车大梁用热轧钢板、高压锅炉用无缝钢管等4个钢铁产品的情况。 相似文献
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《Baosteel Technical Research》2010,(Z1):70
Improving the unit heat efficiency,reducing coal consumption and the emission of CO2 and meeting the requirements of environmental protection and energy conservation is the goal of the boiler and the power industry.Developments of large capacity and high parameter ultra-supercritical(USC) units are the tendency of the power industry.There is no doubt that the development of USC units is based on the development of materials, especially the materials used for super-heater and reheater in high-temperature USC boiler.Due to the long time exposure to the harsh environment,such as bearing the 600℃steam oxidation,and withstanding the corrosive flue gas and fly ash erosion,the materials require not only good high-temperature strength,but also a good corrosion resistance.In consideration of the requirements cited above,foreign countries had developed TP310HCbN (07Cr25Ni21CbN) austenitic heat-resistant steel.However,the domestic demands for this material still depend on import and the cost is high,so the boiler and the power industry expects eagerly that these steels can be produced by domestic metallurgical industry,especially Baosteel,to replace the imported products.In order to satisfy the requirements of domestic manufacturing super-heater and reheater used in ultra-supercritical power boiler,after developed T23、T91、T92、S30432 high pressure boiler tube,Baosteel began to develop TP310HCbN (07Cr25Ni21CbN)austenitic stainless steel tube in January of 2007.This study describes the composition design, the manufacturing process of product,and the assessment of performance of Baosteel’s TP310HCbN (07Cr25Ni21CbN).The data indicates that properties of Baosteel’s TP310HCbN(07Cr25Ni21CbN) conform to the ASME SA-213 standard and GB5310 standard,so it can substitute the imported products and is suitable for manufacturing power station boiler of great capacity and high steam parameters. 相似文献
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《Baosteel Technical Research》2010,(Z1):88
The development and construction of Ultra Super Critical(USC) fossil fired power plants and advanced nuclear power plants are the most important and effective issue to improve national electricity structure in China and to fulfill the national emission aim which had been proposed and promised.Further, steel technology is one of the most imperative fundamentals to ensure the development and construction of USC fossil fired power plants and advanced nuclear power plants.This paper briefly introduced the state-of-the -art and achievement of steel technology used for USC fossil fired power plants and advanced nuclear power plants in China so far.Meanwhile,the authors also analyzed and discussed the potential research and development plans of the important steel technology in China in the near future. 相似文献