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Prospects for the domestic production of large-sized cast blades and vanes for industrial gas turbines

机译：国内生产用于工业燃气轮机的大型铸造叶片和叶片的前景

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Russian experience in the production of large-sized cast blades and vanes for industrial gas turbines is analyzed for the past decades. It is noted that the production of small- and medium-sized blades and vanes made of Russian alloys using technologies for aviation, marine, and gas-pumping turbines cannot be scaled for industrial gas turbines. It is shown that, in order to provide manufacturability under large-scale casting from domestic nickel alloys, it is necessary to solve complex problems in changing their chemical composition, to develop new casting technologies and to optimize the heat treatment modes. An experience of PAO NPO Saturn in manufacturing the blades and vanes made of ChS88U-VI and IN738-LC foundry nickel alloys for the turbines of the GTE-110 gas turbine unit is considered in detail. Potentialities for achieving adopted target parameters for the mechanical properties of working blades cast from ChS88UM-VI modified alloy are established. For the blades made of IN738-LC alloy manufactured using the existing foundry technology, a complete compliance with the requirements of normative and technical documentation has been established. Currently, in Russia, the basis of the fleet of gas turbine plants is composed by foreign turbines, and, for the implementation of the import substitution program, one can use the positive experience of PAO NPO Saturn in casting blades from IN738-LC alloy based on a reverse engineering technique. A preliminary complex of studies of the original manufacturer’s blades should be carried out, involving, first of all, the determination of geometric size using modern measurement methods as well as the studies on the chemical compositions of the used materials (base metal and protective coatings). Further, verifying the constructed calculation models based on the obtained data, one could choose available domestic materials that would meet the operating conditions of the blades according to their heat resistance and corrosion resistance.
机译：分析了过去几十年来俄罗斯在生产用于工业燃气轮机的大型铸件叶片和叶片方面的经验。需要注意的是，使用航空，航海和抽气式涡轮机技术生产的俄罗斯合金制成的中小型叶片和叶片无法扩大到工业用燃气轮机的规模。结果表明，为了在由国产镍合金进行大规模铸造时提供可制造性，有必要解决改变其化学成分的复杂问题，开发新的铸造技术并优化热处理方式。详细考虑了PAO NPO Saturn在制造用于GTE-110燃气轮机单元的涡轮机的ChS88U-VI和IN738-LC铸造镍合金制成的叶片和叶片方面的经验。确定了实现采用ChS88UM-VI改性合金铸造的工作刀片的机械性能所采用的目标参数的潜力。对于使用现有铸造技术制造的由IN738-LC合金制成的叶片，已完全符合规范和技术文档的要求。目前，在俄罗斯，燃气轮机工厂的基础由外国涡轮机组成，对于实施进口替代计划，可以利用PAO NPO Saturn的积极经验来制造基于IN738-LC合金的叶片在逆向工程技术上。应该对原始制造商的叶片进行初步的研究，首先包括使用现代测量方法确定几何尺寸以及对所用材料（贱金属和保护涂层）的化学成分进行研究。 。此外，根据获得的数据验证构建的计算模型，可以根据叶片的耐热性和耐腐蚀性选择能够满足叶片工作条件的可用家用材料。

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