Evaluation of the deep-drawing steel sheets processed by DRECE device

摘要

The article describes a new developed method for producing fine-grained materials, such as DRECE (DRECE, Dual Rolling Equal Channel Extrusion). It describes the process of forming of metal sheets made of steel grade 11 321. It further describes two methods for detection of deep drawing - Erichsen and Fukui. These methods were applied to the extruded metal sheet by DRECE tools. The article presents the results of both exams, including photographs of cracks. Mechanical properties of the steel grade 11 321 before and after extrusion by DRECE tool are described as well.