Single-crystal cast multi-wing blade

Abstract

The invention discloses a single crystal cast multi-blade blade comprising: four blades coupled to an end wall member, each blade having a leading edge and a trailing edge and an outer surface extending therebetween, the leading edge of the blade The rim and trailing edge extend between the first end and the opposite second end, the outer surface includes a convex side and a concave side, and the blade is a single crystal structure produced by a single crystal casting technique using a directionally solidified alloy constituent material. The problems and beneficial effects to be solved by the present invention are: avoiding the casting difficulties caused by the complex geometry of castings related to crystal grains or crystal defects, having material properties between single crystal and polycrystal, easy to produce, and reducing production cost.

Description

technical field [0001] The invention relates to a single-crystal cast multi-wing blade. Background technique [0002] Typically gas turbine engines utilize a casting formed from a nickel or cobalt alloy that can be cast as a polycrystalline directionally solidified or single crystal structure, generally the most desirable properties of the material are associated with the single crystal structure, however , the geometry of some components is difficult during casting, to a large extent related to grain or crystal defects, so castings with these defects on the surface are generally not suitable for engine use, therefore, the yield of castings is low, and the cost of manufacturing components increases. Contents of the invention [0003] The technical problem to be solved by the present invention is to avoid casting difficulties caused by complex geometric shapes of castings related to crystal grains or crystal defects, have material properties between single crystal and polyc...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to avoid casting difficulties caused by complex geometric shapes of castings related to crystal grains or crystal defects. It has material properties between single crystal and polycrystal, is easy to produce, and reduces production costs.

Images