Method for preparing tenon-free depth end bent blade

Abstract

The invention discloses a method for preparing a tenon-free depth end bent blade. The method includes the steps: feeding a plate; jointly milling and roughly rolling a pre-rolled blank; roughly rolling the pre-rolled blank; precisely rolling the pre-rolled blank; precisely rolling the blade; determining the pre-rolled blank; designing a roll mould. The method is a qualitative leap of cold rolling technology and can solve the problems of high manual profile polishing and repairing cost, unstable surface quality and the like of a tenon-free blade body profile, the pre-rolled blank is precisely rolled and matched with the mould in refined design, the non-cutting level of the blade profile is finally realized, the mould is high in yield and stable in forming, the rolled blade is fine in surface integrity and excellent in performance, and the method has a wide and excellent application prospect in terms of manufacture of high-performance blades needed by high-performance engines.

Description

technical field [0001] The invention relates to the field of material forming, in particular to a method for preparing blades. Background technique [0002] Manufacture of non-tenon blades by cold rolling technology is an advanced blade manufacturing method, which is highly valued by developed countries. At present, there are problems in actual production, such as low pass rate, unstable rolling forming, and the blade surface needs to be repaired. The mismatch between the billet and the rolling die in the rough and finish rolling has not yet achieved the true non-cutting process of the airfoil profile, and the final blade profile needs to be manually polished and repaired by the local profile. Contents of the invention [0003] In view of the deficiencies in the existing cold rolling technology, the purpose of the present invention is to provide a scientific and reasonable preparation method that can realize the non-cutting of the tenon-free blade profile, and solve the pr...

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the existing cold rolling technology, the purpose of the present invention is to provide a scientific and reasonable preparation method that can realize the non-cutting of the tenon-free blade profile, and solve the problem of the gap between the billet and the rolling die in rough and finish rolling. The specific solution to the matching problem is to design the shape and size of the original billet and the billet before rolling according to the principle of constant volume and uniform deformation, and to design the shape and size of the original billet and the billet before rolling, and to design the pre-rolling and finishing rolling by applying the forward-slip theory Cold rolling dies and pre-rolled slabs guide the die with high pass rate, stable forming, good surface integrity of rolling blades, and excellent performance

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