Macro-structured Deep Drawing of Steel Alloys - Influenceability on Thinning and Drawing Forces

Deep-drawn components are found across all industries. With respect to the challenges of manufacturing towards a more climate-friendly and resource-efficient industry, various approaches such as lubricant-free forming, are being investigated. Deep drawing with macro-structured tools is a key approach in this regard. In addition to the expansion of the process window, other benefits can be achieved, such as the improvement in resource efficiency resulting from the reduction of induced residual stresses and the saving of lubricant. The investigation of the sheet thinning and drawing force in connection with the macro-structure with the intention to elaborate the sensitivity of the parameters is the subject of this work. Within a systematic investigation, the influence of a changing wavelength λ along with the associated immersion depth δ of the macro-structure is examined. Concluding, a contribution to the design methodology of the macro-structured tools based on the usable process window is presented.