A Laser Selective Melting Manufacturing Process of Annular Array Vane Guide

Abstract

A laser selective melting manufacturing process of an annular array vane guide of the present invention comprises the following steps: S1, segmenting the model: dividing the three-dimensional model of the annular array vane guide into multiple sections; S2, selecting materials and setting process parameters; S3. Determine the placement method and design the support structure; S4. Calibration of dimensional accuracy; S5. Laser selective melting and forming; S6. Post-processing: put the parts together with the substrate into a vacuum heat treatment furnace, and hold it at 800C° for one hour to eliminate residual stress; then Cut the part and remove the support structure. S7. Welding: Fix all the segmented parts on the welding fixture, and weld to obtain the integral annular array vane guide part. The welding method can be argon arc welding or laser welding. The invention well controls the dimensional accuracy, stress deformation and surface roughness of the parts, and the mechanical properties of the parts are better than traditional castings, and the manufacturing period is short and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of laser selective melting, in particular to a laser selective melting manufacturing process of an annular array vane guide. Background technique [0002] The annular array vane guide is an aero-engine part with a complex structure and a multi-blade structure in an annular array. Its working environment is high temperature and high pressure and requires good high temperature mechanical properties. Although the traditional casting process can complete the forming of its complex structure, the disadvantages such as many defects, poor mechanical properties, difficult manufacturing, long cycle time, and low yield rate are very significant. Compared with casting, laser selective melting process can not only form complex structures, but also has better mechanical properties than castings, and is fast and efficient. It is suitable for manufacturing annular array vane guides. However, there are still difficulties i...

AI Technical Summary

Problems solved by technology

However, there are still difficulties in manufacturing annular array vane guides by laser selective melting process: only a few large-scale laser selective melting equipment can manufacture annular array vane guides as a whole, and conventional equipment can only form segmented annular array vane guides and then weld them into a whole , other difficulties include obtaining the best quality process parameters, controlling the dimensional accuracy of parts, controlling the stress and deformation of parts, controlling the surface roughness of parts, and designing support structures that are easy to remove, etc.

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