Mold, used for manufacturing turbine casing of composite material, comprises primary and secondary rings, where primary rings have annular rails having outer contour that corresponds to inner profile of fastening systems of turbine casing

摘要

The mold comprises primary rings (504) axially offset from each other, and secondary rings (510) axially positioned between annular rails (506) of the primary rings. Each annular rail projects outwards, and has an outer contour that corresponds to an inner profile of fastening systems of a turbine casing to be manufactured. The casing comprises an annular cover. The fastening systems are fixed on an interior of the cover and axially spaced from each other. The secondary rings have an outer profile corresponding to an inner profile of the cover of the turbine casing to be manufactured. The mold comprises primary rings (504) axially offset from each other, and secondary rings (510) axially positioned between annular rails (506) of primary rings. Each annular rail projects outwards, and has an outer contour that corresponds to an inner profile of fastening systems of a turbine casing to be manufactured. The casing comprises an annular cover. The fastening systems are fixed on an interior of the cover, and are axially spaced from each other. The second rings have an outer profile corresponding to an inner profile of the cover of the turbine casing to be manufactured. The primary rings are independent from each other and axially placed end to end to form an even mold. Each primary ring comprises angular segments, which are tangentially placed end to end to form a single set of primary rings. The rails of the primary rings have a trapezoidal cross section. The secondary rings are made of inflatable bladders. An independent claim is included for a method for manufacturing a turbine casing of composite material.