Patent ID: 9394597
Filing Date: 2016-07-19
CPC Classification: B23P,C21D,C22F

Claim Text:
1. A method for locally heat-treating at least one gas turbine blade having a blade section and a blade root section in the blade section, the blade root section not to be heat-treated, the gas turbine blade being positioned in a holding receptacle to prevent an unacceptable heating of the blade root section during heat treatment of the blade section, the method comprising; positioning the blade root section of the gas turbine blade in an interior space of the holding receptacle in a way that allows a remaining interior space of the holding receptacle, that is not entirely taken up by the blade root section, to be filled with a filler material; and subsequently positioning the holding receptacle, together with the gas turbine blade, in a heat treatment chamber to enable the turbine blade in the heat treatment chamber to undergo heat treatment; wherein the remaining interior space of the holding receptacle, that is not entirely taken up by the blade root section, is filled with solid bodies in the form of metal spheres and/or with metal powder.