某机二级动叶陶瓷型芯稳定制造工艺研究

Research on Stable Manufacturing Technology of Two-stage Moving Blade Ceramic Core of a Machine

某机二级动叶长期以来使用低温铝基陶瓷型芯,在浇注后发生蠕变,对叶片的壁厚等有很大的影响。根据现场现有设备能力,研制新的硅基陶瓷型芯,通过调整浆料长距离流动性、二氧化硅纤维的适量应用、自动开模模具的应用、柔性射嘴头的使用、陶瓷型芯局部二次低温强化、粉料颗粒的级配等措施,成功制造出满足高低温性能的硅基陶瓷型芯。

The low-temperature aluminum-based ceramic core has been used for a long time in the secondary rotor blades of a certain machine,and the creep occurs after pouring,which has a great influence on the wall thickness of the blades.According to the existing equipment capacity,a new silicon-based ceramic core was developed.By adjusting the long distance flow of slurry,the appropriate application of silica fiber,the application of automatic mold opening,the use of flexible nozzle head,the local secondary low temperature strengthening of ceramic core,the gradation of powder particles and other measures,the siliconbased ceramic core was successfully manufactured to meet the high and low temperature performance.