Electron beam fusing additive blank manufacturing and ring-rolling forming method for large-size metal annular piece

Abstract

The invention provides an electron beam fusing additive blank manufacturing and ring-rolling forming method for a large-size metal annular piece. According to the method, a precision ring-rolling technology and an electron beam fusing additive manufacturing technology are combined, a roller is used for rolling an electron beam additive manufactured blank for deformation, and thus precise and rapidforming of the high-performance annular piece is achieved. The prepared large-size metal annular piece has a fine and uniform deformed structure, the defects of an as-cast structure, pores, non-fusion and the like of an electron beam fusing additive manufactured blank part are eliminated, residual stress and distribution in the part are reduced and improved correspondingly, and stability and reliability of performance of the large-size metal annular piece prepared through electron beam additive manufacturing in the using process are remarkably improved. Meanwhile, by means of the method, forming procedures of the annular piece are greatly reduced, production efficiency is improved, and the production cost of the part is lowered.

Description

technical field [0001] The invention relates to a large-size metal ring piece, which belongs to the technical field of additive manufacturing. Background technique [0002] Modern industrial high-end equipment such as aerospace, weapon equipment, and ships are rapidly developing towards the goal of large-scale, digital, and life-span and reliability increases under extremely harsh conditions, resulting in the size of key metal components such as nickel-based alloys, stainless steel, and titanium alloys becoming more and more large. The larger the size, the increasingly complex structure, and the continuous improvement of performance requirements, it also puts forward higher requirements for manufacturing technology. At present, domestic large-scale metal rings are mostly made of ring rolling blanks and then mechanically processed to obtain final parts. The main processing process is: billet→upsetting→punching→ring rolling→heat treatment→machining. However, due to the large...

AI Technical Summary

Problems solved by technology

However, the rapid manufacturing of electronic beam fuse additive manufacturing parts under special conditions often results in micro-holes, unfused and large residual stresses inside the material, and at the same time, due to the existence of melting channels and molten pools, the prepared parts The surface roughness is high, the microstructure is very different from that of forgings, and has obvious directionality, which seriously affects the performance of parts

Images