초록 ▼

A method of repairing a turbine blade in which damaged material around a lacing wire hole is removed by machining or chemical etching. New metal is then added by welding such that the lacing wire hole is much smaller or completely eliminated and prior to reforming the lacing wire hole, flats may be

A method of repairing a turbine blade in which damaged material around a lacing wire hole is removed by machining or chemical etching. New metal is then added by welding such that the lacing wire hole is much smaller or completely eliminated and prior to reforming the lacing wire hole, flats may be formed either by the addition or removal of metal in the region of the lacing wire hole so that a lacing wire hole forming drill or machine bit can enter the turbine blade at a surface substantially normal to its direction of travel, thereby minimizing any tendency of the lacing wire hole forming drill or machine bit to snatch or for the blade to vibrate.

대표청구항 ▼

[ I claim:] [1.] A method of repairing a turbine blade, comprising:(a) removing material around a lacing wire hole in the blade;(b) replacing the removed material with new metal by welding;(c) adding new metal by welding so as to form an entry surface for a drill or machine bit for reforming the lac

[ I claim:] [1.] A method of repairing a turbine blade, comprising:(a) removing material around a lacing wire hole in the blade;(b) replacing the removed material with new metal by welding;(c) adding new metal by welding so as to form an entry surface for a drill or machine bit for reforming the lacing wire hole, and which entry surface is substantially normal to a longitudinal axis of the hole;(d) carrying out a heat treatment process on the new metal and a surrounding area of the blade, and (e) reforming the lacing wire hole with said drill or machine bit.