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介绍了GX12CrMoWVNbN10-1-1材质1000MW超超临界汽轮机主调阀的铸造工艺方案,针对铸件特点采用的冶炼、铸造工艺,补焊和热处理方案均满足了所要求的无损探伤及力学性能要求。 相似文献
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主要对上倾倒框进行了工艺性分析,指出该铸件的铸造工艺设计难点。通过对铸件结构、形状和尺寸的详细分析,设计了合理的工艺方案、相关工艺参数及浇注系统,运用Procast软件进行铸造工艺的模拟。通过数值模拟,分析铸造工艺所存在的问题并提出优化方案,最终得到可生产出质量均匀,结构完整和符合铸件使用要求的工艺方案。 相似文献
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介绍了第九届国际铸造博览会总的特点,以及在特种铸造方面展示的新技术、新成果,包括压力铸造、消失模铸造、熔模铸造、金属型铸造及低压铸造、艺术铸造、快速造型技术在铸造领域中的应用。 相似文献
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铝合金扁锭热顶电磁铸造技术 总被引:2,自引:0,他引:2
根据热顶-电磁铸造的基本思想,设计了一套适合于制取铝合金扁锭的热顶-电磁成型系统,用小线圈法测量了系统内的磁场强度,计算了电磁压力分布,并与普通电磁铸造成型系统的结果进行对比分析;依据热顶电磁铸造的成型条件,确定了相关的控制参数;通过大量的拉坯实验,探讨了热顶对防止电磁铸造坯易产生表面夹杂缺陷的作用.结果表明:采用热顶-电磁铸造法不仅可有效去除电磁铸造中因电磁搅拌产生的氧化夹杂,而且使得电磁铸造过程简便而易于控制. 相似文献
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以解决铸件热裂为目的,以生产中遇到的典型铸件为例,利用ProCAST铸造模拟软件,对不同铸件结构和不同浇注工艺条件下的铸件热裂缺陷形成倾向进行了系统研究,得到了优化后的铸件结构和铸造工艺,并进行了生产验证,其结果基本吻合。 相似文献
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Jincheng Liu 《中国铸造》2006,3(4)
The casting production in the UK in 2004 is presented and analysed. The UK casting industry has played an important role in world casting and manufacturing production. However recent years the rapid development of some developing countries has been shifting the casting production from the western industrialized countries including the UK. The UK casting industry and associated research and technology organizations, universities have been working together very hard to face the serious competition to make the UK casting industry have a sustainable future. The UK casting industry remains strong and plays an important role in world casting and manufacturing production. 相似文献
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《Intermetallics》2015
Gravity and centrifugal investment casting processes of low-pressure turbine blades with high Nb–TiAl alloy were simulated by Procast software. Actual blade components were poured by vacuum induction suspended furnace with Ar protection. The experimental verification indicated that the simulation results were in good agreement with the experimental results. Comparative results had shown that the surface of centrifugal casting blade was more complete than that of gravity casting one. In gravity casting process, molten metal filled the thinnest trailing edge at last, resulting in the generation of misrun defects. Furthermore, the shrinkage porosity and crack defects of gravity casting were much more and dispersive. The internal and external quality of centrifugal casting was much better than that of gravity casting. Microstructures from edge to center of gravity casting blade had no significant change. The microstructure for centrifugal casting blade is finer than that for gravity casting blade, however, a large number of dentritic γ segregation appeared in the blade edge of centrifugal casting, which resulted from the fast cooling rate of centrifugal casting surface. 相似文献