摘要
文章介绍了一种重型燃机叶片用硅基陶瓷型芯制备方法,测试了型芯显气孔率、吸水率、体积密度、抗弯强度和热变形性能。结果表明,制备的硅基陶瓷型芯显气孔率为32%～36%,吸水率为21%～24%,体积密度为1.48～1.56 g/cm^3,室温强度为15～25 MPa,1 450℃高温强度为18～26 MPa,热变形量小于0.3 mm,满足燃机叶片精密铸造要求。
Preparation of silica-based ceramic core for IGT was introduced in this paper, and the apparent porosity, water absorbili- ty, bulk density, flexural strength and deformation were investigated. It was shown that the apparent porosity was 32%-36%, the water absorbility was 21%～24%, the bulk density was 1.48-1.56 g/cm^3, the room temperature flexural strength was 15～25 MPa, the 1 450℃ flexural strength was 18-26 MPa, the deformation was less than 0.3 mm, which were good for investment casting of IGT.
出处
《东方汽轮机》
2015年第2期66-68,78,共4页
Dongfang Turbine
基金
四川省科技支撑计划项目(2014GZ0025重型燃气轮机透平叶片用陶瓷型芯国产化研究)
四川省科技支撑计划项目(2014GZ0114先进大功率燃气轮机关键技术研究及其产业化)
关键词
硅基陶瓷型芯
气孔率
强度
silica-based ceramic core, porosity, strength
