Microforming stainless steel 304: experimental and numerical integration

This research investigates the microforming behaviour of SS304 stainless steel, fo-cusing on the influence of rolling direction. Known for its strength and ductility, SS304 is crucial for manufacturing miniaturized components. Experimental analyses involve Nakajima testing on SS304 samples at 0°, 45° and 90° using a universal testing machine, with formability parameters measured using a Sipcon CNC vision measurement system. Parallel numerical simulations with Simufact Forming software generate forming limit curves to predict critical deformation points. Comparative analysis reveals consistent trends in microforming behaviour, highlighting the anisotropic properties of SS304 due to rolling direction. Key findings include critical strain values and microstructural chang-es during forming, which are essential to optimize microforming processes. The integra-tion of both approaches provides a comprehensive understanding of the formability lim-its and deformation mechanisms of SS304. This study highlights the significant potential for the advancement of microforming techniques in various industrial applications, par-ticularly those requiring precise miniaturized components, and highlights the importance of combining experimental and numerical methods for a deep understanding of material behaviour.