铸造2012，Vol.61Issue(3)：316-319,4.
型芯抗弯强度的影响因素及空心型芯的制备技术
Influencing Factors of Core Bending Strength and Preparation Technology of Hollow Core
李波 1于兴福 1刘家胜 2曲殿鹏 1黄静 1闫红梅1
作者信息
- 1. 中航工业沈阳黎明航空发动机(集团)有限责任公司,辽宁沈阳110043
- 2. 沈阳工业大学材料科学与工程学院,辽宁沈阳110870
- 折叠
摘要
Abstract
By using of different techniques, we manufactured core and the strength test specimen for precision casting, and researched the bending strength of core and the qualified rate of cores and castings. The results show that the bending strength and yield of core sintered at 1100℃ are higher than those sintered at 1050℃. The bending strength at room temperature of core with low temperature strengthening is higher than that with high and low temperature composite strengthening; bending strength of core with only high temperature strengthening is the lowest. The bending strengths at 1350℃ of the cores with high and low temperature strengthening respectively, were both more than 9 Mpa. The bending strength at 1350℃ with silica sol high temperature strengthening is much lower than that with ethyl silicate high temperature strengthening. The hollow cores sintered at 1100℃ with silica sol high temperature strengthening possess well combination of bending strength and deformability, and higher yield, which improve the qualified rate of the casting and reduce the crack rate of castings.关键词
陶瓷型芯/精密铸造/抗弯强度/合格率/空心型芯Key words
ceramic core/precision casting/bending strength/qualified rate/hollow core分类
矿业与冶金引用本文复制引用
李波,于兴福,刘家胜,曲殿鹏,黄静,闫红梅..型芯抗弯强度的影响因素及空心型芯的制备技术[J].铸造,2012,61(3):316-319,4.
