公开(公告)号：USRE34702E

公开(公告)日：1994-08-23

申请号：US22307

申请日：1993-02-25

申请人： Jan M. Lane ,  John Corrigan ,  Philip D. Crouch

发明人： Jan M. Lane ,  John Corrigan ,  Philip D. Crouch

IPC分类号： B22C9/04

CPC分类号： B22C9/04

摘要： A reinforced ceramic investment casting shell mold and method of making such mold. The ceramic investment casting shell mold includes alternate, repeating layers of a ceramic material and a ceramic stucco defining an overall thickness of the shell mold. A fibrous reinforcing material is disposed in the alternate, repeating layers at an intermediate thickness of the shell mold. The fibrous reinforcing material has high tensile strength at elevated temperature and a coefficient of thermal expansion that is less than the coefficient of thermal expansion of the ceramic material and the ceramic stucco. The fibrous reinforcing material is preferably woven into a twisted yarn and disposed in a generally spiral configuration.

公开(公告)号：US4998581A

公开(公告)日：1991-03-12

申请号：US285412

申请日：1988-12-16

申请人： Jan M. Lane ,  John Corrigan ,  Philip D. Crouch

发明人： Jan M. Lane ,  John Corrigan ,  Philip D. Crouch

IPC分类号： B22C9/04

CPC分类号： B22C9/04

摘要： A reinforced ceramic investment casting shell mold and method of making such mold. The ceramic investment casting shell mold includes alternate, repeating layers of a ceramic material and a ceramic stucco defining an overall thickness of the shell mold. A fibrous reinforcing material is disposed in the alternate, repeating layers at an intermediate thickness of the shell mold. The fibrous reinforcing material has high tensile strength at elevated temperature and a coefficient of thermal expansion that is less than the coefficient of thermal expansion of the ceramic material and the ceramic stucco. The fibrous reinforcing material is preferably woven into a twisted yarn and disposed in a generally spiral configuration.