Thin-walled metal rotary body electron beam fuse additive blank manufacturing and spinning reinforcement forming method

Abstract

The invention relates to a thin-walled metal rotary body electron beam fuse additive blank manufacturing and spinning reinforcement forming method. The method combines a spinning forming technology with an electron beam fuse additive manufacturing technology, the advantage that a spinning wheel carries out spinning on an electron beam fuse additive manufacturing blank to generate large deformationis utilized, so that the purposes of improving the additive manufacturing metal microstructure and improving the mechanical property of a part are achieved. The structure of the thin-wall metal rotary shell prepared by the method is a fine and uniform deformed structure, the defects that the structure of the electron beam fuse additive manufacturing part is thick and large, air holes and incomplete fusion exist are eliminated; meanwhile, according to the method, the forming processes of the thin-wall metal rotary shell is greatly reduced, the cost is reduced, the production efficiency is improved, moreover, the size precision, the surface roughness and the residual stress distribution of the additive manufacturing part can be effectively improved, and finally the synchronous optimizationof the geometrical shape, the structure and the comprehensive performance of the part is achieved, and the stability and the reliability of the performance of the electron beam additive manufacturingpart in the use process are improved.

Description

Technical field [0001] The invention is a thin-walled metal rotary body electron beam fuse additive manufacturing method + spinning strengthening forming method, which belongs to the technical field of additive manufacturing. Background technique [0002] At present, domestic aero-engine metal thin-walled rings, cylinders and other components mostly use sheet metal cutting, rounding and tailor-welding to obtain cylindrical spinning blanks, and then spinning and strengthening the blanks. Due to the welding seam of the spinning blank, the blank deforms unevenly and easily breaks during the spinning process, and the product qualification rate is low. In addition, after the parts are formed, the performance of the weld area is not as good as that of the base material, resulting in a decrease in the overall performance of the parts. Or use extruded seamless metal tube blanks as spinning blanks for spinning forming, but for difficult-to-deform alloys, spinning blanks prepared by this ...

AI Technical Summary

Problems solved by technology

[0004] The present invention is designed for the above-mentioned existing technical situation and provides a thin-walled metal revolving body electron beam fuse additive blanking + spinning strengthening forming method, the method adopts the electron beam fuse additive manufacturing method to preform The purpose is to integrate the unique advantages of electron beam fused wire additive manufacturing and plastic forming, that is, high forming efficiency, high material utilization rate, small deformation resistance, and large deformation at one time The advantages of processing and forming thin-walled metal gyratories with complex shapes and high quality requirements, through large plastic deformation, crushing and refining the as-cast structure of the original alloy, eliminating the remaining defects such as pores and unfused parts of electron beam fuse deposition parts, and significantly improving The structural performance and forming quality of the parts realize the integrated control of the forming of thin-walled metal rotary bodies

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