Abstract
Thin-walled conical parts with variable-section are usually made of superalloy material, with poor plasticity and complex forces, which are difficult to form and control. In this research, a thin-walled conical casing of superalloy GH1140 with variable-section is studied; the real stress–strain curve of the material is fitted and the load-displacement curves of superalloy GH1140 are obtained through a universal testing machine. To clarify the equivalent stress distribution on the upper surface of the thin-walled casing during the forming process and after unloading the rotary wheel, the finite element model of the thin-walled conical casing during the spinning forming process is established with the Simufact Forming finite element analysis software. The effects of processing parameters, such as the mandrel rotational speed ω, the roller feed ratio f and the gap deviation rate δ between the roller and mandrel, on the spinning forming load were obtained. The distribution and numerical trend of the tangential residual stress after forming were detected by X-ray diffraction, and the causes of defects such as flange instability were analyzed. The results of the forming test and the test of residual stress conform well with the simulation, which verifies the stability of the model. The research provides a theoretical basis for improving the forming quality of thin-walled parts with variable-section.
Highlights
Metal spinning, as an advanced processing technology, is widely applied in the field of metal plastic forming
Under the constant rotational speed, increasingspeed, the roller feed ratio leadfeed to anratio increase the strain conditionmandrel of constant mandrel rotational increasing thewill roller willoflead to an rate and the amount of metal formed in the same time, so the spinning force increases
This is increase of the strain rate and the amount of metal formed in the same time, so the spinning force because the mechanism of plastic deformation is complicated; it requires a certain amount of time to increases
Summary
As an advanced processing technology, is widely applied in the field of metal plastic forming. How to improve the spinning forming quality of thin-walled conical parts with variable-section has become a research hotspot in. There is no systematic research on the influence of process process parameters on the forming loading of thin‐walled conical parts with variable‐section. In this parameters on the forming loading of thin-walled conical parts with variable-section. GH1140 thin-walled conical casing with variable-section is taken as the research object research object to study the influence of forming process parameters on the forming load. It provides study the influence of formingthe process parameters the forming load It provides a theoretical atotheoretical basis for improving forming quality ofon variable‐section thin‐walled parts. Basis for improving the forming quality of variable-section thin-walled parts
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
