Method for designing and manufacturing ultra-plastic forming and diffusion bonding mould suitable for complex titanium alloy parts

Abstract

The invention provides a method for designing and manufacturing an ultra-plastic forming and diffusion bonding mould suitable for complex titanium alloy parts, belonging to the field of mould design.The ultra-plastic forming and diffusion bonding mould comprises an upper mould component and a lower mould component, wherein each mould component comprises a mould base reinforcing rib and a mould profile web, and the mould base reinforcing rib and the mould profile web are both separately casted and formed; the mould base reinforcing rib and the mould profile web are positioned by welding a positioning lug device, and the binding faces of the mould base reinforcing rib and the mould profile web are connected in a welding mode to form the mould component; and the upper mould component and thelower mould component form the mould in the welding mode. The profile web and the reinforcing rib are separated, are subjected to numerical control milling and cutting and are connected in a weldingmethod to form a whole, so that the method can realize high stability and less casting defects of the mould, is convenient in manufacturing, and provides a reliable means for forming complex large titanium alloy ultra-plastic forming / diffusion bonding parts.

Description

Technical field [0001] The invention belongs to the field of mold design, and is suitable for the design and manufacture of superplastic forming / diffusion joining molds of complex titanium alloy parts, and is specifically applied to parts with larger forming outlines, different curvature changes, and more complicated shapes. Background technique [0002] Titanium alloy superplastic forming / diffusion bonding technology has developed from replacing separate riveted parts to combined integral parts. It fully reflects the advantages of titanium alloy superplastic forming / diffusion welding technology compared with traditional manufacturing processes. The structure is light and integral. Good performance, high forming quality, short manufacturing cycle, etc. The superplastic forming / diffusion joining technology is applied to the development of aircraft and engine components, which can achieve significant technical and economic benefits of 10%-50% weight reduction and 30%-60% cost reduct...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the high-temperature deformation stability of the mold for superplastic forming / diffusion bonding parts of complex titanium alloy parts, the present invention provides a mold design and manufacturing method suitable for complex shapes and large curvature changes, which can solve the problem of The problem of step difference and shrinkage groove caused by mold deformation ensures the forming quality of parts

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