首页> 外文会议>Advances in Materials Technology for Fossil Power Plants >VM12 - A NEW 12CR STEEL FOR BOILER TUBES, HEADERS AND STEAM PIPES IN ULTRA SUPERCRITICAL POWER PLANTS
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VM12 - A NEW 12CR STEEL FOR BOILER TUBES, HEADERS AND STEAM PIPES IN ULTRA SUPERCRITICAL POWER PLANTS

机译:VM12-新型12%CR钢,用于超超临界电厂的锅炉管,割台和蒸汽管

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Today, newly developed 9%Cr steels such as T/P911 and T/P92 are used for power plants with advanced steam parameters, thanks to their high creep rupture strength values. They show an increase of creep values by around 10 to 25% compared to T/P91. Nevertheless, their range of use is limited by high temperatures because their oxidation resistance is lower than classical 12%Cr steels or austenitic steels. In order to meet high design parameters, a new steel named "VM12" has been developed. The aim is to keep the high strength creep level of T/P92 with an improvement of steam oxidation resistance to fit steam temperatures up to 650°C (1200℉). This new steel is based on a chromium content of 12% alloyed with other elements such as cobalt, tungsten and boron. Results of investigation on 7 lab heats have been presented in a former paper. This new paper will present results on industrial products - tubes and pipes -made with industrial heats. Metallurgical properties are compared to those of industrial T/P92. First recommendations for bending and welding also are presented.
机译:如今,由于具有较高的蠕变断裂强度值,新开发的9%Cr钢(例如T / P911和T / P92)已用于具有先进蒸汽参数的发电厂。与T / P91相比,它们的蠕变值增加了大约10%到25%。然而,它们的使用范围受到高温的限制,因为它们的抗氧化性低于传统的12%Cr钢或奥氏体钢。为了满足较高的设计参数,已经开发了一种名为“ VM12”的新型钢。目的是通过提高耐蒸汽氧化性来保持T / P92的高强度蠕变水平,以适应高达650°C(1200℉)的蒸汽温度。这种新钢的铬含量与其他元素(例如钴,钨和硼)的合金含量为12%。先前的论文中已经介绍了对7种实验室加热的调查结果。这份新论文将介绍用工业加热制成的工业产品-管子和管道的结果。将冶金性能与工业T / P92的冶金性能进行比较。还提出了有关弯曲和焊接的第一条建议。

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