Patent · US Expired

Reinforced ceramic shell mold and method of making same

US6568458B2 · kind B2 · utility

5Cited by
11References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 30, 2001
Grant dateMay 27, 2003
Priority date—
Expiry dateOct 30, 2021

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T29/49988
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

A ceramic investment shell mold is reinforced with a carbon based fibrous reinforcement having an extremely high tensile strength that increases as the mold temperature is increased especially within the range of casting temperatures employed for casting large directionally solidified industrial gas turbine components. The carbon based fibrous reinforcement is wrapped or otherwise positioned around the repeating ceramic slurry/stucco layers forming the intermediate thickness of the shell mold wall. The reinforced shell mold can be used to cast large directionally solidified industrial gas turbine components with accurate dimensional control.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.